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Washington County, IA


Metropolitan Statistical Area: Iowa City, IA
Designated Market Area: Cedar Rapids-Waterloo-Dubuque, IA
American Communities Project County Type (2023): Rural Middle America

Places in Washington County, IA     [Sort places by name]

 

Tracts in Washington County, IA

   



Click here to view demographic data for Washington County, IA

2024 population: 22,631   ( 66 from 2020)
Land area: 568.8 square miles
Population density: 39.8 persons per square mile

2024 Census data
White:20,035 88.53% 1.3%
Black:2291.01% 4.1%
Indian:440.19% 10.0%
Asian:1590.70% 5.3%
2+ races:2561.13% 1.9%
Hispanic:1,9088.43% 19.0%
Total non-White:2,59611.47% 14.1%

2020-2024 ComponentsNumberRate
Births:1,170 13.0
Deaths:1,12612.5
Net Migration: -125-1.4
Net Immigration: 1501.7
Change in White population:-255 -1.1
Change in Non-White pop.:321 1.4



Historical Presidential Election Results for Washington County, IA



Click on the Year to view county-level data for that election.

YearTurnout WinnerRunner-Up OtherTotal Votes Diff
(St)
Diff
(US)
PSV
2024 68% Donald Trump (R) 7,119 61.4% Kamala Harris (D) 4,297 37.1% 172 [+] 1.5% 11,588 6 12 0.70%
2020 69% Donald Trump* (R) 6,971 59.3% Joe Biden (D) 4,561 38.8% 233 [+] 2.0% 11,765 6 12 0.70%
2016 66% Donald Trump (R) 6,173 56.5% Hillary Clinton (D) 3,943 36.1% 813 [+] 7.4% 10,929 5 11 0.70%
2012 67% Mitt Romney (R) 5,562 50.5% Barack Obama* (D) 5,115 46.5% 327 [+] 3.0% 11,004 4 3 0.70%
2008 66% John McCain (R) 5,247 49.4% Barack Obama (D) 5,170 48.6% 212 [+] 2.0% 10,629 5 4 0.69%
2004 68% George W. Bush* (R) 5,977 55.9% John Kerry (D) 4,595 43.0% 116 [+] 1.1% 10,688 6 5 0.71%
2000 60% George W. Bush (R) 4,827 53.1% Albert Gore, Jr. (D) 3,932 43.2% 335 [+] 3.7% 9,094 5 5 0.69%
1996 55% Bill Clinton* (D) 3,828 46.8% Robert Dole (R) 3,600 44.0% 745 [+] 9.1% 8,173 4 3 0.66%
1992 62% George Bush* (R) 3,576 39.7% Bill Clinton (D) 3,384 37.5% 2,058 [+] 22.8% 9,018 2 2 0.67%
1988 53% Michael Dukakis (D) 3,776 49.6% George Bush (R) 3,741 49.1% 99 [+] 1.3% 7,616 5 -4 0.62%
1984 54% Ronald Reagan* (R) 4,613 59.4% Walter Mondale (D) 3,079 39.6% 78 1.0% 7,770 6 1 0.59%
1980 53% Ronald Reagan (R) 3,967 52.0% Jimmy Carter* (D) 2,877 37.7% 783 [+] 10.3% 7,627 1 1 0.58%
1976 59% Gerald Ford* (R) 4,218 54.0% Jimmy Carter (D) 3,448 44.2% 141 [+] 1.8% 7,807 5 6 0.61%
1972 63% Richard Nixon* (R) 5,187 64.1% George McGovern (D) 2,784 34.4% 118 [+] 1.5% 8,089 7 3 0.66%
1968 69% Richard Nixon (R) 4,899 61.7% Hubert Humphrey (D) 2,679 33.7% 365 [+] 4.6% 7,943 9 18 0.68%
1964 69% Lyndon Johnson* (D) 4,587 57.9% Barry Goldwater (R) 3,315 41.9% 17 0.2% 7,919 4 3 0.67%
1960 78% Richard Nixon (R) 5,861 64.5% John Kennedy (D) 3,222 35.4% 6 0.1% 9,089 8 15 0.71%
1956 72% Dwight Eisenhower* (R) 5,844 65.8% Adlai Stevenson (D) 3,022 34.0% 10 0.1% 8,876 7 8 0.72%
1952 77% Dwight Eisenhower (R) 6,946 72.5% Adlai Stevenson (D) 2,604 27.2% 35 0.4% 9,585 9 17 0.76%
1948 66% Thomas Dewey (R) 4,680 56.8% Harry Truman* (D) 3,485 42.3% 80 [+] 1.0% 8,245 9 12 0.79%
1944 69% Thomas Dewey (R) 5,308 60.6% Franklin Roosevelt* (D) 3,423 39.1% 32 0.4% 8,763 9 15 0.83%
1940 76% Wendell Willkie (R) 5,649 58.1% Franklin Roosevelt* (D) 4,030 41.5% 42 0.4% 9,721 6 13 0.80%
1936 75% Alf Landon (R) 4,619 50.7% Franklin Roosevelt* (D) 4,379 48.0% 120 [+] 1.3% 9,118 8 14 0.80%
1932 72% Franklin Roosevelt (D) 4,554 53.0% Herbert Hoover* (R) 3,889 45.2% 152 [+] 1.8% 8,595 5 6 0.83%
1928 74% Herbert Hoover (R) 5,948 68.4% Al Smith (D) 2,754 31.6% 0 0.0% 8,702 7 10 0.86%
1924 70% Calvin Coolidge (R) 5,053 60.4% John Davis (D) 1,868 22.3% 1,450 [+] 17.3% 8,371 5 6 0.86%
1920 68% Warren Harding (R) 5,813 71.1% James Cox (D) 2,257 27.6% 107 [+] 1.3% 8,177 0 11 0.91%
1916 43% Charles Evans Hughes (R) 2,745 55.3% Woodrow Wilson* (D) 2,139 43.1% 79 [+] 1.6% 4,963 1 9 0.96%
1912 42% Woodrow Wilson (D) 2,003 41.8% Theodore Roosevelt (Prog) 1,330 27.7% 1,464 [+] 30.5% 4,797 2 3 0.97%
1908 45% William Taft (R) 2,631 53.8% William J. Bryan (D) 2,119 43.3% 139 [+] 2.8% 4,889 -2 2 0.99%
1904 44% Theodore Roosevelt (R) 2,875 59.2% Alton Parker (D) 1,772 36.5% 206 [+] 4.2% 4,853 -4 3 1.00%
1900 47% William McKinley* (R) 2,844 54.3% William J. Bryan (D) 2,234 42.6% 163 [+] 3.1% 5,241 -4 3 0.99%
* incumbent         PSV: percent of state vote

Historical Statewide Election Results for Washington County, IA

Click on the Year to view county-level data for that election.

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2022 S3 51% Charles Grassley* (R) 5,450 62.7% Michael Franken (D) 3,235 37.2% 6 [+] 0.1% 8,691 7 0.71%
2022 G 52% Kim Reynolds* (R) 5,692 64.6% Deidre DeJear (D) 2,937 33.4% 176 [+] 2.0% 8,805 7 0.72%
2020 S2 69% Joni Ernst* (R) 6,773 58.1% Theresa Greenfield (D) 4,519 38.8% 362 [+] 3.1% 11,654 6 0.70%
2018 G 55% Kim Reynolds* (R) 5,189 56.6% Fred Hubbell (D) 3,746 40.9% 227 [+] 2.5% 9,162 6 0.69%
2016 S3 65% Charles Grassley* (R) 7,251 67.3% Patty Judge (D) 3,062 28.4% 464 [+] 4.3% 10,777 7 0.70%
2014 S2 50% Joni Ernst (R) 4,781 58.1% Bruce Braley (D) 3,098 37.6% 354 [+] 4.3% 8,233 6 0.73%
2014 G 50% Terry Branstad* (R) 5,268 63.8% Jack Hatch (D) 2,654 32.1% 338 [+] 4.1% 8,260 5 0.73%
2010 S3 53% Charles Grassley* (R) 6,152 71.0% Roxanne Conlin (D) 2,280 26.3% 235 [+] 2.7% 8,667 7 0.78%
2010 G 54% Terry Branstad (R) 4,935 56.4% Chet Culver* (D) 3,391 38.7% 428 [+] 4.9% 8,754 4 0.78%
2008 S2 64% Tom Harkin* (D) 6,122 59.2% Christopher Reed (R) 4,209 40.7% 6 [+] 0.1% 10,337 4 0.69%
2006 G 47% Jim Nussle (R) 3,737 50.0% Chet Culver (D) 3,605 48.3% 128 [+] 1.7% 7,470 6 0.71%
2004 S3 67% Charles Grassley* (R) 8,082 77.0% Art Small (D) 2,190 20.9% 220 [+] 2.1% 10,492 7 0.71%
2002 S2 46% Tom Harkin* (D) 3,518 49.6% Greg Ganske (R) 3,441 48.5% 138 [+] 1.9% 7,097 5 0.69%
2002 G 46% Doug Gross (R) 3,497 49.1% Tom Vilsack* (D) 3,425 48.1% 203 [+] 2.8% 7,125 5 0.69%
1998 S3 45% Charles Grassley* (R) 4,946 72.9% David Osterberg (D) 1,754 25.9% 85 [+] 1.3% 6,785 4 0.72%
1998 G 46% Tom Vilsack (D) 3,560 51.3% Jim Ross Lightfoot (R) 3,286 47.3% 96 [+] 1.4% 6,942 1 0.73%
1996 S2 54% Tom Harkin* (D) 4,016 49.6% Jim Ross Lightfoot (R) 3,928 48.5% 158 [+] 2.0% 8,102 2 0.66%
1994 G 45% Terry Branstad* (R) 4,093 61.3% Bonnie Campbell (D) 2,478 37.1% 111 [+] 1.7% 6,682 4 0.67%
1992 S3 59% Charles Grassley* (R) 6,368 74.5% Jean Lloyd-Jones (D) 1,969 23.0% 214 [+] 2.5% 8,551 5 0.66%
1990 S2 43% Tom Harkin* (D) 3,107 50.6% Tom Tauke (R) 3,037 49.4% 1 [+] 0.0% 6,145 3 0.62%
1990 G 43% Terry Branstad* (R) 4,177 67.1% Donald Avenson (D) 2,023 32.5% 28 [+] 0.4% 6,228 6 0.64%
1986 S3 36% Charles Grassley* (R) 3,780 72.2% John Roehrick (D) 1,422 27.2% 32 [+] 0.6% 5,234 6 0.59%
1986 G 37% Terry Branstad* (R) 3,092 57.4% Lowell Junkins (D) 2,292 42.6% 1 [+] 0.0% 5,385 6 0.59%
1984 S2 53% Tom Harkin (D) 3,803 50.0% Roger Jepsen* (R) 3,741 49.2% 63 [+] 0.8% 7,607 6 0.59%
1982 G 43% Terry Branstad (R) 3,589 58.6% Roxanne Conlin (D) 2,506 40.9% 31 [+] 0.5% 6,126 6 0.59%
1980 S3 51% Charles Grassley (R) 4,192 56.8% John Culver* (D) 3,120 42.3% 72 [+] 1.0% 7,384 3 0.58%
1978 S2 35% Roger Jepsen (R) 2,526 54.1% Dick Clark* (D) 2,089 44.8% 51 [+] 1.1% 4,666 3 0.57%
1978 G 36% Robert Ray* (R) 3,122 65.0% Jerry Fitzgerald (D) 1,653 34.4% 30 [+] 0.6% 4,805 7 0.57%
1974 S3 41% David Stanley (R) 3,050 57.1% John Culver (D) 2,238 41.9% 55 [+] 1.0% 5,343 10 0.60%
1974 G 43% Robert Ray* (R) 3,588 64.6% James Schaben (D) 1,910 34.4% 58 [+] 1.0% 5,556 7 0.60%
1972 S2 62% Dick Clark (D) 4,013 50.4% Jack Miller* (R) 3,910 49.1% 42 [+] 0.5% 7,965 5 0.66%
1972 G 62% Robert Ray* (R) 5,152 64.5% Paul Franzenburg (D) 2,743 34.4% 90 [+] 1.1% 7,985 6 0.66%
1970 G 43% Robert Ray* (R) 2,883 57.0% Robert Fulton (D) 1,989 39.3% 188 [+] 3.7% 5,060 6 0.64%
1968 S3 68% David Stanley (R) 4,503 58.2% Harold Hughes (D) 3,231 41.8% 4 [+] 0.1% 7,738 9 0.68%
1968 G 68% Robert Ray (R) 4,649 59.6% Paul Franzenburg (D) 3,142 40.3% 3 [+] 0.0% 7,794 6 0.69%
1966 S2 52% Jack Miller* (R) 3,879 64.7% E.B. Smith (D) 2,053 34.2% 65 [+] 1.1% 5,997 4 0.70%
1966 G 53% Harold Hughes* (D) 3,069 50.1% William Murray (R) 3,017 49.2% 43 [+] 0.7% 6,129 5 0.69%
1964 G 68% Harold Hughes* (D) 4,851 61.9% Evan Hultman (R) 2,944 37.5% 46 [+] 0.6% 7,841 6 0.67%
1962 S3 48% Bourke Hickenlooper* (R) 3,423 62.1% E.B. Smith (D) 2,085 37.9% 0 0.0% 5,508 9 0.68%
1962 G 48% Norman Erbe* (R) 3,058 55.6% Harold Hughes (D) 2,446 44.4% 0 0.0% 5,504 8 0.67%
1960 S2 77% Jack Miller (R) 5,453 60.8% Herschel Loveless (D) 3,521 39.2% 0 0.0% 8,974 9 0.73%
1960 G 78% Norman Erbe (R) 5,334 59.1% Edward McManus (D) 3,695 40.9% 0 0.0% 9,029 7 0.73%
*: incumbent               +: ran on additional party lines               Type: G: Governor; S1,S2,S3: Senate Class 1, 2 or 3
italics: special election           RO: runoff election           PSV: percent of state vote


Historical U.S. House Election Results for Washington County, IA

Click on the District to view county-level data for that election (where available).

DateDistrictWinnerRunner-Up OtherTotal Votes
2024-11-05 IA01Mariannette Miller-Meeks* (R) 6,616 58.2% Christina Bohannan (D) 4,706 41.4% 38 0.3% 11,360
County Total for 2024-11-05:   11,360
2022-11-08 IA01Mariannette Miller-Meeks* (R) 5,376 62.0% Christina Bohannan (D) 3,290 37.9% 4 0.0% 8,670
County Total for 2022-11-08:   8,670
2020-11-03 IA02Mariannette Miller-Meeks (R) 6,633 58.7% Rita Hart (D) 4,650 41.1% 23 0.2% 11,306
County Total for 2020-11-03:   11,306
2018-11-06 IA02Christopher Peters (R) 4,595 50.5% Dave Loebsack* (D) 4,272 47.0% 230 2.5% 9,097
County Total for 2018-11-06:   9,097
2016-11-08 IA02Christopher Peters (R) 5,621 53.3% Dave Loebsack* (D) 4,905 46.5% 13 0.1% 10,539
County Total for 2016-11-08:   10,539
2014-11-04 IA02Mariannette Miller-Meeks (R) 4,527 55.3% Dave Loebsack* (D) 3,648 44.6% 12 0.1% 8,187
County Total for 2014-11-04:   8,187
2012-11-06 IA02Dave Loebsack* (D) 5,256 49.6% John Archer (R) 5,197 49.0% 153 1.4% 10,606
County Total for 2012-11-06:   10,606
2010-11-02 IA02Mariannette Miller-Meeks (R) 4,711 55.1% Dave Loebsack* (D) 3,548 41.5% 285 3.3% 8,544
County Total for 2010-11-02:   8,544
2008-11-04 IA02Mariannette Miller-Meeks (R) 4,918 48.4% Dave Loebsack* (D) 4,852 47.8% 389 3.8% 10,159
County Total for 2008-11-04:   10,159
2006-11-07 IA02Jim Leach* (R) 4,296 59.4% Dave Loebsack (D) 2,933 40.6% 2 0.0% 7,231
County Total for 2006-11-07:   7,231
2004-11-02 IA02Jim Leach* (R) 7,554 73.3% Dave Franker (D) 2,587 25.1% 167 1.6% 10,308
County Total for 2004-11-02:   10,308
2002-11-05 IA02Jim Leach* (R) 4,437 62.5% Julie Thomas (D) 2,545 35.8% 121 1.7% 7,103
County Total for 2002-11-05:   7,103
2000-11-07 IA03Leonard Boswell* (D) 4,573 53.6% Jay Marcus (R) 3,534 41.4% 422 4.9% 8,529
County Total for 2000-11-07:   8,529
1998-11-03 IA03Larry McKibben (R) 3,229 49.0% Leonard Boswell* (D) 3,207 48.7% 151 2.3% 6,587
County Total for 1998-11-03:   6,587
1996-11-05 IA03Mike Mahaffey (R) 4,140 54.1% Leonard Boswell (D) 3,085 40.3% 428 5.6% 7,653
County Total for 1996-11-05:   7,653
1994-11-08 IA03Jim Ross Lightfoot* (R) 4,062 63.7% Elaine Baxter (D) 2,233 35.0% 79 1.2% 6,374
County Total for 1994-11-08:   6,374
1992-11-03 IA03Jim Ross Lightfoot* (R) 4,322 55.4% Elaine Baxter (D) 3,416 43.8% 65 0.8% 7,803
County Total for 1992-11-03:   7,803
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for Washington County, IA

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2024 11,892 5,760 48.4% 2,679 22.5% 3,453 29.0% Rep +3,081 Rep +25.9% 70%
2022 13,392 6,109 45.6% 3,076 23.0% 4,207 31.4% Rep +3,033 Rep +22.6% 79%
2020 14,742 6,046 41.0% 3,628 24.6% 5,068 34.4% Rep +2,418 Rep +16.4% 87%
2018 14,231 5,813 40.8% 3,102 21.8% 5,316 37.4% Rep +2,711 Rep +19.0% 85%
2016 14,353 6,219 43.3% 3,042 21.2% 5,092 35.5% Rep +3,177 Rep +22.1% 86%
2014 13,810 5,628 40.8% 2,936 21.3% 5,246 38.0% Rep +2,692 Rep +19.5% 84%
2012 13,677 5,799 42.4% 3,009 22.0% 4,869 35.6% Rep +2,790 Rep +20.4% 83%
2010 13,793 5,439 39.4% 3,325 24.1% 5,029 36.5% Rep +2,114 Rep +15.3% 85%
2008 13,205 5,155 39.0% 3,362 25.5% 4,688 35.5% Rep +1,793 Rep +13.6% 82%
2006 14,200 5,473 38.5% 3,064 21.6% 5,663 39.9% Rep +2,409 Rep +17.0% 90%
2004 14,316 5,717 39.9% 2,999 20.9% 5,600 39.1% Rep +2,718 Rep +19.0% 91%
2002 12,797 4,978 38.9% 2,701 21.1% 5,118 40.0% Rep +2,277 Rep +17.8% 83%
2000 12,529 5,114 40.8% 2,777 22.2% 4,638 37.0% Rep +2,337 Rep +18.7% 82%
1994 11,113 5,233 47.1% 2,627 23.6% 3,253 29.3% Rep +2,606 Rep +23.5% 75%
1986 9,444 3,446 36.5% 2,534 26.8% 3,464 36.7% Rep +912 Rep +9.7% 66%
VAPOP% is the estimated percentage of voting age population that is registered.
Registration data may include "inactive" voters.   Data for each year pertains to the November elections.