Since Iowa became a U.S. state in 1846, it has sent congressional delegations to the United States Senate and United States House of Representatives. Each state elects two senators to serve for six years, and members of the House to two-year terms. Before becoming a state, the Iowa Territory elected a non-voting delegate at-large to Congress from 1838 to 1846.
These are tables of congressional delegations from Iowa to the United States Senate and the United States House of Representatives.[1]
| Current U.S. senators from Iowa | |||
|---|---|---|---|
| Class II senator | Class III senator | ||
Joni Ernst | Chuck Grassley | ||
| Party | |||
| Incumbent since | January 3, 2015 | January 3, 1981 | |
The current dean of the Iowa delegation is Senator and President pro tempore emeritus of the United States Senate Chuck Grassley, having served in the Senate since 1981 and in Congress since 1975.
See main article: List of United States senators from Iowa.
See main article: List of United States representatives from Iowa.
On July 4, 1838, the Iowa Territory was organized. Most of the area comprising the territory was originally part of the Louisiana Purchase and was a part of the Missouri Territory. When Missouri became a state in 1821, this area (along with the Dakotas) effectively became unorganized territory. The area was closed to white settlers until the 1830s, after the Black Hawk War ended. It was attached to the Michigan Territory on June 28, 1834, and was split off with the Wisconsin Territory in 1836 when Michigan became a state. The Iowa Territory was the "Iowa District" of western Wisconsin Territory – the region west of the Mississippi River. The original boundaries of the territory, as established in 1838, included part of Minnesota and parts of the Dakotas, covering about 194000sqmi of land.
Starting on September 10, 1838, Iowa Territory sent a non-voting delegate to the House.
| Years | Delegate from | ||
|---|---|---|---|
| September 10, 1838 – October 27, 1840 | William W. Chapman (D) | ||
| October 28, 1840 – December 28, 1846 | Augustus C. Dodge (D) |
Following statehood on December 28, 1846, Iowa had two seats in the House. It elected both seats statewide at-large on a general ticket, until 1847, when it redistricted into two districts.
| Congress | Elected on a general ticket | |||
|---|---|---|---|---|
| 29th | Serranus C. Hastings (D) | Shepherd Leffler (D) | ||
| Congress | ||||
| 30th | rowspan=2 | William Thompson (D) | rowspan=3 | Shepherd Leffler (D) |
| 31st | ||||
| Daniel F. Miller (W) | ||||
| 32nd | rowspan=2 | Bernhart Henn (D) | Lincoln Clark (D) | |
| 33rd | John Parsons Cook (W) | |||
| 34th | Augustus Hall (D) | James Thorington (W) | ||
| 35th | rowspan=3 | Samuel Ryan Curtis (R) | Timothy Davis (R) | |
| 36th | rowspan=3 | William Vandever (R) | ||
| 37th | ||||
| James F. Wilson (R) | ||||
Following the 1860 census, Iowa was apportioned 6 seats.
| Congress | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 38th | James F. Wilson (R) | rowspan=3 | Hiram Price (R) | rowspan=5 | William B. Allison (R) | rowspan=2 | Josiah B. Grinnell (R) | rowspan=2 | John A. Kasson (R) | rowspan=3 | Asahel W. Hubbard (R) |
| 39th | |||||||||||
| 40th | rowspan=3 | William Loughridge (R) | Grenville M. Dodge (R) | ||||||||
| 41st | George W. McCrary (R) | William Smyth (R) | rowspan=3 | Francis W. Palmer (R) | rowspan=2 | Charles Pomeroy (R) | |||||
| William P. Wolf (R) | |||||||||||
| 42nd | Aylett R. Cotton (R) | William G. Donnan (R) | Madison M. Walden (R) | Jackson Orr (R) |
Following the 1870 census, Iowa was apportioned 9 seats.
| Congress | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 43rd | George W. McCrary (R) | Aylett R. Cotton (R) | William G. Donnan (R) | rowspan=2 | Henry Otis Pratt (R) | rowspan=2 | James Wilson (R) | William Loughridge (R) | rowspan=2 | John A. Kasson (R) | rowspan=2 | James W. McDill (R) | Jackson Orr (R) | ||||
| 44th | John Q. Tufts (R) | L. L. Ainsworth (D) | rowspan=2 | Ezekiel S. Sampson (R) | rowspan=2 | S. Addison Oliver (R) | |||||||||||
| 45th | Joseph Champlin Stone (R) | rowspan=3 | Hiram Price (R) | Theodore Weld Burdick (R) | rowspan=5 | Nathaniel Cobb Deering (R) | rowspan=2 | Rush Clark (R) | Henry J. B. Cummings (R) | rowspan=3 | William Fletcher Sapp (R) | ||||||
| 46th | Moses A. McCoid (R) | rowspan=4 | Thomas Updegraff (R) | rowspan=2 | James B. Weaver (GB) | rowspan=2 | Edward H. Gillette (GB) | rowspan=4 | Cyrus C. Carpenter (R) | ||||||||
| rowspan=3 | William George Thompson (R) | ||||||||||||||||
| 47th | rowspan=2 | Sewall S. Farwell (R) | Marsena E. Cutts (R) | John A. Kasson (R) | William P. Hepburn (R) | ||||||||||||
| John C. Cook (D) |
Following the 1880 census, Iowa was apportioned 11 seats.
Following the 1930 census, Iowa was apportioned 9 seats.
| Congress | District | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 73rd | rowspan=3 | Edward C. Eicher (D) | Bernhard M. Jacobsen (D) | Albert Willford (D) | rowspan=3 | Fred Biermann (D) | rowspan=3 | Lloyd Thurston (R) | Cassius C. Dowell (R) | rowspan=3 | Otha Wearin (D) | rowspan=6 | Fred C. Gilchrist (R) | rowspan=2 | Guy Gillette (D) | ||
| 74th | John W. Gwynne (R) | Hubert Utterback (D) | |||||||||||||||
| 75th | rowspan=4 | William S. Jacobsen (D) | rowspan=2 | Cassius C. Dowell (R) | rowspan=3 | Vincent F. Harrington (D) | |||||||||||
| 76th | Thomas E. Martin (R) | rowspan=3 | Henry O. Talle (R) | rowspan=3 | Karl M. LeCompte (R) | Ben F. Jensen (R) | |||||||||||
| 77th | rowspan=2 | Paul Cunningham (R) | |||||||||||||||
| Harry Narey (R) | |||||||||||||||||
Following the 1940 census, Iowa was apportioned 8 seats.
| Congress | District | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 78th | Thomas E. Martin (R) | rowspan=8 | Henry O. Talle (R) | John W. Gwynne (R) | rowspan=8 | Karl M. LeCompte (R) | rowspan=8 | Paul Cunningham (R) | Fred C. Gilchrist (R) | Ben F. Jensen (R) | rowspan=10 | Charles B. Hoeven (R) | |
| 79th | rowspan=6 | James I. Dolliver (R) | |||||||||||
| 80th | |||||||||||||
| 81st | H. R. Gross (R) | ||||||||||||
| 82nd | |||||||||||||
| 83rd | |||||||||||||
| 84th | rowspan=4 | Fred Schwengel (R) | |||||||||||
| 85th | rowspan=3 | Merwin Coad (D) | |||||||||||
| 86th | Leonard G. Wolf (D) | Steven V. Carter (D) | rowspan=2 | Neal Smith (D) | |||||||||
| 87th | James E. Bromwell (R) | John Henry Kyl (R) | |||||||||||
Following the 1960 census, Iowa was apportioned 7 seats.
| Congress | District | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 88th | Fred Schwengel (R) | James E. Bromwell (R) | rowspan=5 | H. R. Gross (R) | John Henry Kyl (R) | rowspan=5 | Neal Smith (D) | Charles B. Hoeven (R) | Ben F. Jensen (R) | |||||
| 89th | John R. Schmidhauser (D) | John Culver (D) | Bert Bandstra (D) | Stanley L. Greigg (D) | John R. Hansen (D) | |||||||||
| 90th | rowspan=3 | Fred Schwengel (R) | rowspan=3 | John Henry Kyl (R) | Wiley Mayne (R) | rowspan=3 | William J. Scherle (R) | |||||||
| 91st | ||||||||||||||
| 92nd | ||||||||||||||
Following the 1970 census, Iowa was apportioned 6 seats.
| Congress | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 93rd | rowspan=2 | Edward Mezvinsky (D) | John Culver (D) | H. R. Gross (R) | Neal Smith (D) | William Scherle (R) | Wiley Mayne (R) | ||||
| 94th | rowspan=2 | Mike Blouin (D) | rowspan=3 | Chuck Grassley (R) | rowspan=5 | Tom Harkin (D) | rowspan=6 | Berkley Bedell (D) | |||
| 95th | Jim Leach (R) | ||||||||||
| 96th | rowspan=6 | Tom Tauke (R) | |||||||||
| 97th | rowspan=3 | T. Cooper Evans (R) | |||||||||
| 98th | |||||||||||
| 99th | rowspan=4 | Jim Ross Lightfoot (R) | |||||||||
| 100th | rowspan=3 | Dave Nagle (D) | rowspan=3 | Fred Grandy (R) | |||||||
| 101st | |||||||||||
| 102nd | Jim Nussle (R) |
Following the 1990 census, Iowa was apportioned 5 seats.
| Congress | ||||||||
|---|---|---|---|---|---|---|---|---|
| 103rd | Jim Leach (R) | Jim Nussle (R) | rowspan=2 | Jim Ross Lightfoot (R) | Neal Smith (D) | Fred Grandy (R) | ||
| 104th | rowspan=4 | Greg Ganske (R) | rowspan=4 | Tom Latham (R) | ||||
| 105th | rowspan=8 | Leonard Boswell (D) | ||||||
| 106th | ||||||||
| 107th | ||||||||
| 108th | rowspan=2 | Jim Nussle (R) | rowspan=2 | Jim Leach (R) | rowspan=5 | Tom Latham (R) | rowspan=5 | Steve King (R) |
| 109th | ||||||||
| 110th | Bruce Braley (D) | Dave Loebsack (D) | ||||||
| 111th | ||||||||
| 112th |
Following the 2010 census, Iowa was apportioned 4 seats.
| Congress | |||||||
|---|---|---|---|---|---|---|---|
| 113th | Bruce Braley (D) | Dave Loebsack (D) | Tom Latham (R) | Steve King (R) | |||
| 114th | Rod Blum (R) | David Young (R) | |||||
| 115th | |||||||
| 116th | Abby Finkenauer (D) | Cindy Axne (D) | |||||
| 117th | Ashley Hinson (R) | Mariannette Miller-Meeks (R) | Randy Feenstra (R) | ||||
| 118th | Mariannette Miller-Meeks (R) | Ashley Hinson (R) | Zach Nunn (R) |