| County: | Pennington County |
| State: | Minnesota |
| Ex Image: | Carnegie library thief river falls.jpg |
| Ex Image Size: | 220px |
| Ex Image Cap: | Old Carnegie Library, downtown Thief River Falls, Minnesota. |
| Founded Date: | November 23 |
| Founded Year: | 1910 |
| Seat Wl: | Thief River Falls |
| Largest City Wl: | Thief River Falls |
| Area Total Sq Mi: | 618 |
| Area Land Sq Mi: | 617 |
| Area Water Sq Mi: | 1.7 |
| Area Percentage: | 0.3 |
| Population As Of: | 2020 |
| Population Total: | 13992 |
| Pop Est As Of: | 2023 |
| Population Est: | 13714 |
| Density Sq Mi: | 22.7 |
| Time Zone: | Central |
| Web: | co.pennington.mn.us |
| Named For: | Edmund Pennington |
| District: | 7th |
Pennington County is a county in the northwestern part of the U.S. state of Minnesota. As of the 2020 census, the population was 13,992.[1] Its county seat is Thief River Falls.[2]
The Wisconsin Territory was established by the federal government effective July 3, 1836, and existed until its eastern portion was granted statehood (as Wisconsin) in 1848. The federal government set up the Minnesota Territory in the remaining territory, effective March 3, 1849. The newly organized territorial legislature created nine counties across the territory in October of that year. One of those original counties, Pembina, had its lower portion partitioned in 1858 by the newly organized Minnesota State legislature to create Polk County. On December 24, 1896, the legislature partitioned the northern portion of Polk to create Red Lake County. Then on November 23, 1910,[3] the northern part of Red Lake was sectioned off to create Pennington County, the penultimate Minnesota county to be created (followed by Lake of the Woods in 1922). The county was named for Edmund Pennington (1848-1926), a longtime Minnesota railroad executive, who was serving as president of the Minneapolis, St. Paul, and Sault Ste. Marie Railway when the county was formed. Thief River Falls, the area's major settlement (platted in 1887), was specified as the county seat.[4]
The Red Lake River flows westward into the county from Beltrami County through Pennington's central portion. Near Thief River Falls it is joined by the Thief River, flowing southward into the county from Marshall County. The combined flow exits Pennington County toward the south, then swings west- and northwestward as it moves to its confluence with the Red River near Grand Forks, North Dakota. The county terrain consists of low rolling hills, lightly wooded, with all available areas devoted to agriculture.[5] The terrain slopes to the west and south,[6] with its highest point near the lower east border, at 1186feet ASL.[7] The county has a total area of, of which is land and (0.3%) is water.[8] Pennington is one of 17 Minnesota savanna region counties with more savanna soils than either prairie or forest soils.
| White (NH) | 12,241 | 87.5% | |
| Black or African American (NH) | 177 | 1.3% | |
| Native American (NH) | 166 | 1.2% | |
| Asian (NH) | 121 | 0.9% | |
| Pacific Islander (NH) | 6 | 0.04% | |
| Other/Mixed (NH) | 610 | 4.4% | |
| Hispanic or Latino | 671 | 4.8% |
As of the census of 2000, there were 13,584 people, 5,525 households, and 3,552 families in the county. The population density was 22/mi2. There were 6,033 housing units at an average density of 9.78/mi2. The racial makeup of the county was 97.02% White, 0.21% Black or African American, 0.82% Native American, 0.59% Asian, 0.04% Pacific Islander, 0.51% from other races, and 0.81% from two or more races. 1.24% of the population were Hispanic or Latino of any race. 49.0% were of Norwegian, 15.4% German and 7.2% Swedish ancestry.
There were 5,525 households, out of which 30.60% had children under the age of 18 living with them, 51.70% were married couples living together, 9.10% had a female householder with no husband present, and 35.70% were non-families. 29.50% of all households were made up of individuals, and 12.60% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.95.
The county population contained 24.50% under the age of 18, 10.30% from 18 to 24, 26.50% from 25 to 44, 22.90% from 45 to 64, and 15.80% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 97.50 males. For every 100 females age 18 and over, there were 94.60 males.
The median income for a household in the county was $34,216, and the median income for a family was $43,936. Males had a median income of $30,771 versus $21,078 for females. The per capita income for the county was $17,346. About 7.70% of families and 11.10% of the population were below the poverty line, including 10.70% of those under age 18 and 14.80% of those age 65 or over.
In the first five elections after its founding, Pennington County had mixed results in presidential elections, voting for four different parties at least once in that span. From 1932 to 1996, the county voted Democratic, typically by moderately healthy margins, in every election save for three nationwide Republican landslides, Richard Nixon in 1972 and Ronald Reagan in both 1980 and 1984. Beginning in 2000, Pennington County has favored Republicans in five of the six elections, with the exception being Barack Obama winning the county in 2008 by a fairly small margin of about 2%.