Quad Cities Explained

Official Name:Quad Cities, Iowa–Illinois
Other Name:Davenport–Moline–Rock Island, IA–IL
Settlement Type:Metropolitan Statistical Area
Subdivision Type:Country
Subdivision Name: United States
Subdivision Type1:State
Subdivision Name1: Iowa
Illinois
Subdivision Type2:Largest city
Subdivision Name2:Davenport, Iowa
Subdivision Type3:Other cities
Subdivision Name3:Moline, Illinois
Bettendorf, Iowa
Rock Island, Illinois
East Moline, Illinois
Unit Pref:US
Area Total Sq Mi:170
Elevation Max Ft:850
Elevation Max M:259
Elevation Min Ft:590
Elevation Min M:180
Population Total:379441 (148th)
Population Density Sq Mi:1600
Population Density Km2:618
Population Rank:148th in the U.S.
Timezone1:CST
Utc Offset1:-06:00
Timezone1 Dst:CDT
Utc Offset1 Dst:-05:00

The Quad Cities is a region of cities (originally four, see History) in the U.S. states of Iowa and Illinois: Davenport and Bettendorf in southeastern Iowa, and Rock Island, Moline and East Moline in northwestern Illinois.[1] [2] [3] [4] These cities are the center of the Quad Cities metropolitan area, a region within the Mississippi River Valley, which as of 2023 had a population estimate of 467,817 and a Combined Statistical Area (CSA) population of 474,019, making it the 90th-largest CSA in the nation.[5] [6] [7]

History

Early history

Before European settlers came to inhabit the Quad Cities, the confluence of rivers had attracted many varying cultures of indigenous peoples, who used the waterways and riverbanks for their settlements for thousands of years. At the time of European encounter, it was a home and principal trading place of the Sauk and Fox tribes of Native Americans. Saukenuk was the principal village of the Sauk tribe and birthplace of its 19th-century war chief, Black Hawk. In 1832, Sauk chief Keokuk and General Winfield Scott signed a treaty in Davenport after the US defeated the Sauk and their allies in the Black Hawk War. The treaty resulted in the Native Americans ceding 6e6acre of land to the United States in exchange for a much smaller reservation elsewhere. Black Hawk State Historic Site in Rock Island preserves part of historic Saukenuk and is listed on the National Register of Historic Places.

The history of urban settlements in the Quad Cities was stimulated by riverboat traffic. For between LeClaire, Iowa, and Rock Island, the Mississippi River flowed across a series of finger-like rock projections protruding from either bank. These rapids were difficult for steamboats to traverse. As demand for river-based transportation increased along the upper Mississippi, the navigability of the river throughout the "Rock Island Rapids" became a greater concern. Over time, a minor industry grew up in the area to meet the steamboats' needs. Boat crews needed rest areas to stop before encountering the rapids, places to hire expert pilots such as Phillip Suiter, who was the first licensed pilot on the upper Mississippi River, to guide the boat through the rocky waters, or, when the water was low, places where goods could be removed and transported by wagon on land past the rapids.[8] Today, the rocks are submerged six feet underwater by a lake formed by two locks and dams.

As the Industrial Revolution developed in the United States, many enterprising industrialists looked to the Mississippi River as a promising source of water power. The combination of energy and easy access to river transportation attracted entrepreneurs and industrialists to the Quad Cities for development. In 1848, John Deere moved his plough business to Moline. His business was incorporated as Deere & Company in 1868. Deere & Company is the largest employer today in the Quad Cities.

The first railroad bridge built across the Mississippi River connected Davenport and Rock Island in 1856.[9] It was built by the Rock Island Railroad Company, and replaced the slow seasonal ferry service and winter ice bridges as the primary modes of transportation across the river. Steamboaters saw the nationwide railroads as a threat to their business. On May 6, 1856, just weeks after completion of the bridge, an angry steamboater crashed the Effie Afton into it. John Hurd, the owner of the Effie Afton, filed a lawsuit against the Rock Island Railroad Company. The Rock Island Railroad Company selected Abraham Lincoln as their trial lawyer and won after he took the case to the US Supreme Court. Expert riverboat pilot Phillip Suiter was one of his witnesses. It was a pivotal trial in Lincoln's career.

Evolution of an identity

After the Civil War, the region began to gain a common identity. The river towns that were thoughtfully planned and competently led flourished, while other settlements, usually get-rich-quick schemes for speculators, failed to pan out. By World War I, the towns of Davenport, Rock Island, and Moline had begun to style themselves as the "Tri-Cities", a cluster of three more-or-less equally-sized river communities growing around the small bend of the Mississippi River where it flows west. But with the growth of Rock Island County, during the 1930s the term "Quad Cities" came into vogue, as East Moline was given "equal status". Despite the fact that the region had earned the name "Quad Cities", the National Basketball Association had a franchise in Moline, Illinois, from 1946 to 1951 called the "Tri-Cities Blackhawks". Then, with the opening of an Alcoa (now Arconic) plant east of Davenport in 1948, the town of Bettendorf underwent so much growth that many people in the community discussed the adoption of the name "Quint Cities",[10] But by this time, the name "Quad Cities" had become known well beyond the area, and "Quint Cities" never caught on, despite the efforts of WOC-TV (now KWQC-TV) and others. Consequently, when Bettendorf passed East Moline in size, there was some debate about whether Bettendorf had "displaced" East Moline. Instead, local officials, such as the Chamber of Commerce,[11] have chosen an inclusive approach, maintaining the name "Quad Cities" yet including all five cities.[12]

1980s–current

Beginning in the late 1970s, economic conditions caused major industrial restructuring, which disrupted the basis of the region's economy. The major companies, agricultural manufacturers, ceased or scaled back operations in the Quad Cities. Factories which closed included International Harvester (Navistar) in Rock Island and Case IH in Bettendorf. Moline-based John Deere cut its labor headcount by one half. Later in the 1980s, Caterpillar Inc. closed its factories at Mount Joy and Bettendorf.

Since the 1990s, the Quad Cities governments, businesses, non-profits and residents have worked hard to redevelop the region. They have achieved national attention for their accomplishments.

Examples of revitalization and rebirth include:

Proposed mergers

Over the years, several communities in the Quad Cities region have proposed or performed mergers. As it grew, Davenport annexed the communities of Rockingham, Nahant, Probstei, East Davenport, Oakdale, Cawiezeel, Blackhawk, Mt. Joy, Green Tree, and others. Bettendorf annexed portions of Pleasant Valley in the 1970s. In 1987, Rock Island, Moline, East Moline, Milan, Carbon Cliff, Hampton, Coal Valley and Silvis considered a super-city merger which would have seen the Illinois cities become the second-largest city in the state,[18] but the proposal ultimately failed. Moline and East Moline considered a merger in 1997.[19] That same year, Green Rock and Colona did merge.[20]

Geography

The Quad Cities is located at the confluence of the Rock and Mississippi rivers, approximately west of Chicago, and forms the largest metropolitan area along the Mississippi River between Minneapolis–Saint Paul and the St. Louis metropolitan area. Interstate 80 crosses the Mississippi River here. The Quad Cities area is distinctive because the Mississippi River flows from east to west as it passes through the heart of the area; the Iowa cities of Davenport and Bettendorf are located due north of Rock Island and Moline, respectively.

The Quad Cities area is one where the telephone companies cooperate with regional phone calls. Iowa and Illinois have different area codes (563 and 309), yet most calls originating and terminating within the core urban area are placed without long-distance charges by dialing just a 7-digit number. This helps the bi-state area promote itself as a single community, "joined by a river".

The Quad Cities Metropolitan Area consists of three counties: Scott County in Iowa, and Rock Island County and Henry County in Illinois. The Quad City metro population is 382,268.[21] The Quad Cities Metropolitan Area is also considered part of the Great Lakes Megalopolis.[22] [23]

Demographics

According to the 2010 United States Census Count, the metropolitan area grew to 471,551.[24] As of the 2000 census, a total of 96,495 households and 60,535 families resided in the area.

Race and ethnicity

The racial makeup of the area is 90.6% White (410,861), 3.7% Black or African American (27,757), 0.6% American Indian and Alaskan Native (1,255), 1.0% Asian (6,624), 0.03% Pacific Islander (156), and 2.0% from two or more races (11,929). 7.1% of the population is Hispanic or Latino of any race (37,070).[25] The predominant ethnicities in the Quad Cities are of northern European descent, including German, Irish, and English, as well Scandinavian (Mostly Swedish and Norwegian) and Dutch. The primary minority groups in the area are African-Americans, which in Davenport make up the third largest black population in the state of Iowa, a community dating back to the 1830s when Iowa was a free territory. Many of the city's African-American residents have roots in the Southern/Border states of the U.S., including Mississippi, Arkansas, Alabama, and Missouri. The most significant Asian-American populations are South Asian and Vietnamese American.[26] [27] [28] [29]

Religion

According to resources, Christianity is the largest religion to be practiced in the area. However, the two states have a different population of Christian groups. In Davenport and Bettendorf, Catholics make up an 18.5% plurality, but Protestants with 15.1% Mainline and 11.6% Evangelical make up large minorities as well. The Black Protestants on the Iowa side comes in at 1.2%. On the Illinois side, between Rock Island, Moline, and East Moline, Catholicism is less prevalent at 12.4%, and at 12.5% Evangelical and 11.0% Mainline have smaller declines.

The Jewish population is about 500–600, which is down from about 1,800–2,000 in the 1950s and 1960s.[30]

Metropolitan area

The Quad Cities metropolitan area, more formally known as the Davenport–Moline–Rock Island Metropolitan Statistical Area (MSA), is the metropolitan area associated with the Quad Cities in the U.S. states of Iowa and Illinois. The Davenport–Moline–Rock Island MSA consists of four counties – Scott County in Iowa and Henry, Mercer, and Rock Island counties in Illinois – and had an estimated population of 384,324 as of 2020.

The Quad Cities metropolitan area is also considered part of the Great Lakes Megalopolis, and is the largest metropolitan area along the Mississippi River in Iowa and between Minneapolis–Saint Paul and the St. Louis metropolitan area.[31]

Population by County[32]

2020 rankStateCounty2020 Census2010 CensusChange
1IowaScott
2IllinoisRock Island
3IllinoisHenry
4IllinoisMercer
MetroIowa, IllinoisScott, Rock Island, Henry, Mercer

Population by City[33]

2020 rankCityStateCounty2020 Census2010 CensusChange
1DavenportIowaScott
2MolineIllinoisRock Island
3BettendorfIowaScott
4Rock IslandIllinoisRock Island
5East MolineIllinoisRock Island
6SilvisIllinoisRock Island
7EldridgeIowaScott
8GeneseoIllinoisHenry
9MilanIllinoisRock Island
10ColonaIllinoisHenry
11Le ClaireIowaScott
12Coal ValleyIllinoisRock Island, Henry
13AledoIllinoisMercer
14Park ViewIowaScott
15CambridgeIllinoisHenry
16Carbon CliffIllinoisRock Island
17HamptonIllinoisRock Island
18OrionIllinoisHenry
19Port ByronIllinoisRock Island
20Blue GrassIowaScott, Muscatine
21WalcottIowaScott
22AndalusiaIllinoisRock Island
23BuffaloIowaScott
24AtkinsonIllinoisHenry
25Rapids CityIllinoisRock Island
26PrincetonIowaScott
27AnnawanIllinoisHenry
28Coyne CenterIllinoisRock Island
29ViolaIllinoisMercer
30Long GroveIowaScott
31MathervilleIllinoisMercer
32SherrardIllinoisMercer
33CordovaIllinoisRock Island
34AndoverIllinoisHenry
35ReynoldsIllinoisRock Island, Mercer
36Oak GroveIllinoisRock Island
37HillsdaleIllinoisRock Island
38EdgingtonIllinoisRock Island
39RiverdaleIowaScott
40DonahueIowaScott
41McCauslandIowaScott
42Campbell's IslandIllinoisRock Island
43PreemptionIllinoisMercer
44DixonIowaScott
45MontpelierIowaScott, Muscatine
46Rock Island ArsenalIllinoisRock Island
47ClevelandIllinoisHenry
48North HendersonIllinoisMercer
49Illinois CityIllinoisRock Island
50MaysvilleIowaScott
51Taylor RidgeIllinoisRock Island
52Panorama ParkIowaScott
53New LibertyIowaScott
54OphiemIllinoisHenry
55OscoIllinoisHenry
56BarstowIllinoisRock Island
57Lynn CenterIllinoisHenry
58JoslinIllinoisRock Island
59Buffalo PrairieIllinoisRock Island
60Big RockIowaScott, Clinton
61ArgoIowaScott
62NekomaIllinoisHenry
63PlainviewIowaScott

Places with over 100,000 inhabitants

Places with 10,001 to 100,000 inhabitants

Places with 1,001 to 10,000 inhabitants

Places with fewer than 1,000 inhabitants

Unincorporated places

Landmarks

Noteworthy companies

Top employers

According to Quad Cities website,[37] the top employers in the Quad Cities area are:

RankEmployer
  1. of employees
Industry
1Deere & Company8,572Agricultural Innovation
2Rock Island Arsenal6,300Defense Manufacturing
3UnityPoint Health - Trinity6,100Healthcare
4Genesis Health System4,700Healthcare
5Hy-Vee4,200Grocery
6HNI Corporation/The Hon Company/Allsteel3,800Office Furniture Manufacturing
7Walmart3,600Warehouse Clubs and Supercenters
82,400Aerospace and Defense Aluminum
Tyson Fresh Meats2,400Food Processing
10Oscar Mayer/Kraft1,200Food Processing
Tri-City Electric Company1,200Electrical Contractor

Notable people

Education

Colleges and universities

Culture

Since 1916, the region has supported the Quad City Symphony Orchestra, which presents a year-round schedule of concerts at the Adler Theatre in Davenport and Centennial Hall in Rock Island. The Handel Oratorio Society, dating to 1880, is the second-oldest organization of its kind in the nation and presents annual performances of "Messiah" along with another major work for choir and orchestra. The Augustana Choir, founded at Rock Island's Augustana College in 1934, is one of the nation's leading collegiate choruses. Major outdoor summer music festivals include the Bix Beiderbecke Memorial Jazz Festival, Mississippi Valley Blues Festival, and River Roots Live.

The Quad Cities' three traditional community theaters – Playcrafters Barn Theatre (founded in 1920, comedies and dramas)[38] and Quad City Music Guild (1948, musicals) in Moline, and Genesius guild (1957, outdoor Shakespeare and Greek comedies and tragedies) in Rock Island – were joined in 1976 by Circa '21 Dinner Playhouse, a professional dinner theater in downtown Rock Island's historic Fort Theatre. Ballet is performed at Ballet Quad Cities. ComedySportz provides improv comedy. Bluebox Limited is a Bettendorf-based film production company, and many outside productions companies have filmed movies in the Quad Cities in recent years.[39] [40] Historic buildings and sites listed on state and the National Register of Historic Places interpret the history of people's settlement and lives in the area.

Media

See main article: Media in the Quad Cities. The Quad Cities is the 151st largest radio market in the United States.[41] It is ranked 97th by Nielsen Media Research for the 2008–09 television season with 309,600 television households.[42]

The area is served by over 13 commercial radio stations, 8 non-commercial radio stations, 3 low power FM radio stations, 8 TV stations and 3 daily newspapers.

In 2012, the Mississippi Valley Fair that is held in Davenport served as the film location for Rodney Atkins' music video "Just Wanna Rock N' Roll".

Also in 2012, the PBS Frontline documentary Poor Kids was filmed in and around the Quad Cities showing poverty from a child's perspective.

Transportation

Four interstate highways serve the Quad Cities: Interstate 80, Interstate 280, Interstate 74 serve both states while Interstate 88 serves just Illinois. United States highways include U.S. Route 6 and U.S. Route 67 which run through both Iowa and Illinois, while U.S. Route 61 serves just Iowa and U.S. Route 150 serves just Illinois.A total of five bridges accessible by automobiles connect Iowa with Illinois in the Quad Cities across the Mississippi River. The Fred Schwengel Memorial Bridge carries Interstate 80 and connects Le Claire, Iowa, with Rapids City, Illinois. Continuing downstream, the I-74 Bridge connects Bettendorf, Iowa, with Moline, Illinois, and is the busiest bridge with an average of 70,400 cars a day.[43] The Government Bridge connects Downtown Davenport with the Rock Island Arsenal. Three bridges connect Davenport with Rock Island, Illinois; The Rock Island Centennial Bridge, The Crescent Rail Bridge, and the furthest downstream bridge, the Sergeant John F. Baker, Jr. Bridge which carries I-280.

Several state highways also serve the area. Iowa Highway 22 is on Davenport's southwest side and runs west through the county, while Iowa Highway 130 runs along Northwest Boulevard on Davenport's north edge. Illinois Route 5 (John Deere Road) runs from Rock Island east till it runs into Interstate 88. Illinois Route 92 runs along the Mississippi River, while Illinois Route 84 runs along the east side of Rock Island County. Illinois Route 192 connects Highway 92 with Illinois Route 94 near Taylor Ridge. The Chicago – Kansas City Expressway also serves the area along Interstates 74, 80, and 88.

There are three transit operators in the Quad Cities with limited interconnection between them. Rock Island County Metropolitan Mass Transit District (Quad Cities MetroLINK) serves the Illinois cities of Rock Island, Moline, East Moline, Milan, Silvis, Carbon Cliff, Hampton and Colona. It has 12 routes and a fleet of about 52 buses. It operates a river craft during summer months. In Iowa, Davenport Citibus has 10 fixed routes and operates 20 buses, seven days a week and Bettendorf Transit operates three routes, Monday–Saturday, and has eight buses.

Intercity bus service to the Quad Cities is provided by Burlington Trailways and Greyhound Lines.

Amtrak currently does not serve the Quad Cities. The closest station is about 50miles away in Galesburg, Illinois. In 2008, United States Senators Tom Harkin, Chuck Grassley, Dick Durbin, and Barack Obama sent a letter to Amtrak asking them to begin plans to bring rail service to the Quad Cities.[44] In October 2010, a $230 million federal fund was announced that will bring Amtrak service to the Quad Cities, with a new line running from Moline to Chicago. They hoped to have the line completed in 2015, and offer two round trips daily to Chicago.[45]

In December 2011, the federal government awarded $177 million in funding for the Amtrak connection. Budgetary and logistical issues have delayed the completion of all necessary track improvements, but the project is still in development.[46] [47] The multi-modal Moline Q Station building was completed in early 2018, with the attached Westin Element hotel opening in February.[48] When the full project is completed, it will establish passenger rail through the Quad Cities, for the first time since the 1970s.

The Quad Cities is served by the Quad Cities International Airport, Illinois' third-busiest airport, located in Moline. The airport is marketed as a regional alternative to the larger airports in Chicago, nearly 200miles away. The smaller Davenport Municipal Airport is the home of the Quad City Air Show.

Sports

From 1907 to 1926, Rock Island was home to the NFL's Rock Island Independents. The franchise was a charter member on the National Football League (NFL) in 1920. The first NFL Game ever was played by the Independents at Douglas Park in September 1920. Football legend Jim Thorpe was a member of the team in 1924.

The Tri-Cities Blackhawks, named in honor of the Sauk war chief Black Hawk, was the next top-level professional sports franchise. The club played in the National Basketball League (NBL) from 1946 until its merger in 1949 with the Basketball Association of America to become the National Basketball Association (NBA). Hall of famer Red Auerbach coached the Blackhawks during their first NBA season.

After the 1950–51 basketball season, the team moved to Milwaukee, where they were named the Hawks. After a second move to St. Louis, the team is now the Atlanta Hawks.

Professional basketball returned to the Quad Cities during the 1980s and 1990s with the Quad City Thunder of the Continental Basketball Association. The CBA served as the NBA's premier developmental league and produced many highly regarded NBA stars. From 1987 through the 1992–93 season, the Thunder played at Wharton Field House in Moline. Starting with the 1993–94 season, the team played at The MARK of the Quad Cities (now the Vibrant Arena at The MARK). After the CBA folded in 2001, the Thunder franchise ceased operations permanently. Vibrant Arena at The MARK occasionally hosts NCAA Division I college basketball conference tournaments as well as NBA and NHL exhibitions.

The Quad Cities has hosted minor league baseball teams since the Davenport Brown Stockings first played in 1878. The Rock Island Islanders and Moline Plowboys each fielded teams for many seasons. The Islanders began play in 1901 and played primarily at Douglas Park. The Plowboys were founded in 1914. Their home was Browning Field.

The Davenport franchise has been a member of the Midwest League since 1960. They have played at Modern Woodmen Park since 1931. Today, the Quad Cities River Bandits are High Class A affiliate of the Kansas City Royals

The PGA Tour makes an annual stop in the Quad Cities. The golf tournament is currently known as the John Deere Classic. It has drawn dozens of top PGA players over the years, including Tiger Woods, Vijay Singh, and Payne Stewart.

The Quad Cities Marathon has run annually in late September since 1998. Roughly 400-500 participants race through the four cities, beginning and ending in Moline. The race weekend also offers a half marathon and a 5K as well as races for children. Kenyan Kiplangat Terer holds the men's record with a 2:14:04, run in 2013. Ethiopian Hirut Guangul holds the woman's record at 2:35:07, from her 2012 win.[49]

Sports teams

ClubSportLeagueVenueEstablishedChampionships
Quad Cities River BanditsBaseballMidwest LeagueModern Woodmen Park19606
Quad City SteamwheelersIndoor footballIFLVibrant Arena at The MARK20170
Quad City StormIce hockeySPHLVibrant Arena at The MARK20180

See also

See also

External links

Notes and References

  1. Web site: Welcome to the Quad Cities. City Guide Post Inc.. February 2, 2008.
  2. Web site: Community Visitor Information . Illinois Quad Cites Chamber of Commerce . February 2, 2008. https://web.archive.org/web/20071214222307/http://www.quadcitychamber.com/visitor/. December 14, 2007.
  3. News: Johnson. Dirk. October 20, 1987. East Moline Journal; Friday Night High, in the Bleachers. The New York Times. February 2, 2008.
  4. Web site: Why Quad Cities. Quad Cities Chamber of Commerce. February 3, 2016. https://web.archive.org/web/20160119074525/http://www.quadcitieschamber.com/why-quad-cities. January 19, 2016. dead.
  5. [List of Combined Statistical Areas]
  6. Web site: Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: April 1, 2010 to July 1. CSV. 2011 Population Estimates. United States Census Bureau, Population Division. June 2012. 2012-08-01. dead. https://web.archive.org/web/20120427231227/http://www.census.gov/popest/data/metro/totals/2011/tables/CBSA-EST2011-01.csv. April 27, 2012. mdy-all.
  7. Web site: Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: April 1, 2010 to July 1, 2011. CSV. 2012 Population Estimates. United States Census Bureau, Population Division. April 2012. 2013-03-16. https://web.archive.org/web/20130501135333/http://www.census.gov/popest/data/metro/totals/2012/files/CBSA-EST2012-alldata.csv. May 1, 2013. dead. mdy-all.
  8. Book: Frederick Anderson. Joined by a River: The Quad Cities, Lee Enterprises, Inc., 1982, p. 16.
  9. Web site: Bridging the Mississippi . National Archives . February 3, 2021 . en . 15 August 2016.
  10. Web site: About. February 3, 2016. 2008-09-19.
  11. Web site: Quad Cities Chamber . Quad Cities Chamber. July 25, 2018.
  12. Web site: Cities. September 20, 2008. July 25, 2018. https://web.archive.org/web/20180726071859/https://www.quadcities.com/city/. July 26, 2018. dead.
  13. News: CNN; Where homes are affordable. September 24, 2008 . Jeff . Cox.
  14. News: The Best Places for Business and Careers - 2015. Forbes.
  15. Web site: 5 Markets Beating the Housing Bust. February 23, 2012. Yahoo Finance. February 3, 2016.
  16. Web site: Study: Q-C makes strides in high-tech jobs. Doug Schorpp. The Quad-City Times. February 3, 2016.
  17. Web site: Modern Woodmen Park voted Best Minor League Ballpark – MiLB.com Clubs. MiLB.com. February 3, 2016. March 4, 2016. https://web.archive.org/web/20160304060348/http://www.milb.com/news/article.jsp?ymd=20130814&content_id=56957458&fext=.jsp&vkey=pr_t565&sid=t565:. dead.
  18. Web site: Schmeltzer . John . Quad Cities Toying with Supercity Idea . Chicago Tribune . 11 August 2019 . 1987-08-19.
  19. Web site: Morris . Rebecca . MOLINE, EAST MOLINE DISCUSS MERGER . Dispatch-Argus . 11 August 2019 . 1997-08-27.
  20. Web site: Lemmon . Dustin . 10 years later: Merger 'best' for Green Rock, Colona . Quad City Times . 11 August 2019 . 2007-06-24.
  21. Web site: U.S. Census website. United States Census Bureau. 2016. July 17, 2017.
  22. http://www.america2050.org/great_lakes.html America 2050: Megaregions: Great Lakes.
  23. Regional Plan Association (2008). America 2050: An Infrastructure Vision for 21st Century America. New York: Regional Plan Association.
  24. Web site: American FactFinder. United States Census Bureau. 2010. 2011-05-26. Note: Quad City population is equivalent to adding up the populations of Scott County, Iowa and Rock Island, Mercer, and Henry Counties in Illinois.
  25. https://www.quadcitieschamber.com/Quad{{Dead link|date=March 2020 |bot=InternetArchiveBot |fix-attempted=yes }} Cities Chamber-Quad Cities Demographics.pdf
  26. Web site: Davenport Population and Demographics (Davenport, IA). davenport.areaconnect.com.
  27. Web site: Bettendorf Population and Demographics (Bettendorf, IA). bettendorf.areaconnect.com.
  28. Web site: Rock Island Population and Demographics (Rock Island, IL). rockisland.areaconnect.com.
  29. Web site: Moline Population and Demographics (Moline, IL). molineil.areaconnect.com.
  30. Web site: Jews in the Quad Cities. Quad City Times.
  31. [Great Lakes Megalopolis]
  32. Web site: City and Town Population Totals: 2010-2019.
  33. Web site: City and Town Population Totals: 2010-2019.
  34. Web site: TV show to feature RI auction business. Alma Gaul. The Quad-City Times. February 3, 2016.
  35. News: Walters . Bruce . Art for the Quick and the Dead: Exploring the Sculptures of Quad Cities Cemeteries . 30 July 2019 . River City Reader . 3 October 2013 . https://web.archive.org/web/20190730080809/https://www.rcreader.com/art/art-quick-and-dead-exploring-sculptures-quad-cities-cemeteries . 30 July 2019 . dead .
  36. Web site: City of East Moline. https://web.archive.org/web/20100313010559/http://www.eastmoline.com/Mayor.cfm. dead. March 13, 2010.
  37. Web site: Largest Employers | Top Employers | QC First . Quadcitiesfirst.com . 2016-02-03 . https://web.archive.org/web/20190331133134/https://quadcitieschamber.com/locate-start-grow/locate/major-employers . 2019-03-31 . dead .
  38. Web site: Virgo Multimedia . Playcrafters Barn Theatre – Community theater for the Quad-Cities . Playcrafters.com . 1960-10-05 . 2016-02-03 . https://web.archive.org/web/20150513041740/http://www.playcrafters.com/history.php . May 13, 2015 . dead .
  39. Web site: Cook . Linda . Nothing is 'Quiet' about the lives of filmmakers from Bettendorf . The Quad-City Times . February 3, 2021 . en.
  40. Web site: Turner . Jonathan . New Farrelly brothers streaming series shot in several Quad-Cities locations . qconline.com . February 3, 2021 . en.
  41. Web site: Market Survey Schedule & Population Rankings . . September 12, 2011 . September 12, 2011 . https://web.archive.org/web/20111015200901/http://arbitron.com/downloads/redbook_fa11.pdf . October 15, 2011 . dead .
  42. Web site: Nielsen Media Research. Nielsen Local Television Market Universe Estimates. 2009-01-17. 2012-04-01. https://web.archive.org/web/20120401072025/http://tvbythenumbers.zap2it.com/2008/09/10/nielsen-local-television-market-universe-estimates/5037/. dead.
  43. Web site: Bridges: Iowa, Illinois order safety inspections. Quad City Times. 2007-12-19 .
  44. News: Ready to trade wheels for rails. Quad-City Times. Coulter, Melissa. 2008-06-06. 2008-09-29 .
  45. News: Quad-City rail project to get $230 million . Quad City Times. Tibbetts. 2010-10-25. 2010-10-29.
  46. News: Wisniewski . Mary . Hopes rise for new passenger trains to Quad Cities, Dubuque . 14 January 2019 . Chicago Tribune . 19 November 2018 . Wisniewski.
  47. News: Ketz . Jonathan . No longer on track: what's delaying Quad Cities-to-Chicago passenger rail . 14 January 2019 . WQAD Channel 8 News . 8 August 2017 . Ketz.
  48. Web site: Element Westin/The Q Project . Moline, IL Official Website . 14 January 2019.
  49. Web site: Quad Cities Marathon . QC Marathon . 31 January 2020.
  50. Web site: Storm's a coming: Quad-Cities hockey franchise unveils new name . . June 22, 2018.
  51. Web site: Quad City Steamwheelers join the IFL for 2019 season . Nebraska.tv . September 7, 2018. 2018-09-07 .
  52. Web site: ABOUT – Quad City Raiders . Qcraiders.com . 2016-02-03 . 2016-03-05 . https://web.archive.org/web/20160305075843/http://qcraiders.com/about/ . dead .