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Clayton County, IA


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

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

 

Tracts in Clayton County, IA

   



Click here to view demographic data for Clayton County, IA

2024 population: 16,931   ( 117 from 2020)
Land area: 778.5 square miles
Population density: 21.7 persons per square mile

2024 Census data
White:16,080 94.97% 1.4%
Black:1370.81% 3.5%
Indian:260.15% 36.8%
Asian:660.39% 22.2%
2+ races:1961.16% 15.3%
Hispanic:4262.52% 19.0%
Total non-White:8515.03% 14.5%

2020-2024 ComponentsNumberRate
Births:755 11.1
Deaths:95414.0
Net Migration: 30.0
Net Immigration: 841.2
Change in White population:-225 -1.3
Change in Non-White pop.:108 0.6



Historical Presidential Election Results for Clayton County, IA

Recent Trends
VotesΔ MarginSwing %
2024 vs. 2020 R +149 R +472 R + 5.6%
D -323
2024 vs. 2016 R +938 R +1,158 R + 10.6%
D -220
2020 vs. 2016 R +789 R +686 R + 5.0%
D +103
2024 vs. 2012 R +2,091 R +3,880 R + 42.1%
D -1,789
2016 vs. 2008 R +1,666 R +3,624 R + 41.8%
D -1,958
How to interpret this table


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

YearTurnout WinnerRunner-Up OtherTotal Votes Diff
(St) 		Diff
(US) 		PSV
2024 71% Donald Trump (R) 6,255 66.5% Kamala Harris (D) 3,017 32.1% 128 [+] 1.4% 9,400 11 17 0.57%
2020 72% Donald Trump* (R) 6,106 63.6% Joe Biden (D) 3,340 34.8% 148 [+] 1.5% 9,594 11 17 0.57%
2016 67% Donald Trump (R) 5,317 58.2% Hillary Clinton (D) 3,237 35.5% 575 [+] 6.3% 9,129 7 12 0.58%
2012 66% Barack Obama* (D) 4,806 52.6% Mitt Romney (R) 4,164 45.6% 168 [+] 1.8% 9,138 -1 -2 0.58%
2008 65% Barack Obama (D) 5,195 57.8% John McCain (R) 3,651 40.6% 144 [+] 1.6% 8,990 -4 -5 0.58%
2004 66% John Kerry (D) 4,736 51.7% George W. Bush* (R) 4,312 47.0% 120 [+] 1.3% 9,168 -3 -4 0.61%
2000 61% Albert Gore, Jr. (D) 4,238 49.4% George W. Bush (R) 4,034 47.1% 299 [+] 3.5% 8,571 -1 -1 0.65%
1996 59% Bill Clinton* (D) 4,284 52.3% Robert Dole (R) 2,944 35.9% 966 [+] 11.8% 8,194 -4 -5 0.66%
1992 67% Bill Clinton (D) 3,742 40.7% George Bush* (R) 3,044 33.1% 2,404 [+] 26.2% 9,190 -4 -4 0.68%
1988 59% Michael Dukakis (D) 4,320 52.4% George Bush (R) 3,839 46.6% 83 [+] 1.0% 8,242 2 -7 0.67%
1984 59% Ronald Reagan* (R) 5,029 58.8% Walter Mondale (D) 3,446 40.3% 78 0.9% 8,553 6 0 0.65%
1980 62% Ronald Reagan (R) 5,115 55.6% Jimmy Carter* (D) 3,297 35.8% 794 [+] 8.6% 9,206 4 5 0.70%
1976 64% Gerald Ford* (R) 4,826 54.8% Jimmy Carter (D) 3,804 43.2% 177 [+] 2.0% 8,807 5 7 0.69%
1972 66% Richard Nixon* (R) 5,447 60.2% George McGovern (D) 3,366 37.2% 235 [+] 2.6% 9,048 3 0 0.74%
1968 72% Richard Nixon (R) 5,132 57.8% Hubert Humphrey (D) 3,168 35.7% 578 [+] 6.5% 8,878 5 14 0.76%
1964 76% Lyndon Johnson* (D) 5,624 58.9% Barry Goldwater (R) 3,923 41.1% 3 0.0% 9,550 3 3 0.81%
1960 85% Richard Nixon (R) 6,441 58.3% John Kennedy (D) 4,612 41.7% 4 0.0% 11,057 2 9 0.87%
1956 78% Dwight Eisenhower* (R) 6,529 59.8% Adlai Stevenson (D) 4,384 40.1% 13 0.1% 10,926 1 2 0.89%
1952 81% Dwight Eisenhower (R) 7,669 67.2% Adlai Stevenson (D) 3,730 32.7% 9 0.1% 11,408 3 12 0.90%
1948 70% Thomas Dewey (R) 5,151 50.9% Harry Truman* (D) 4,857 48.0% 103 [+] 1.0% 10,111 3 6 0.97%
1944 68% Thomas Dewey (R) 5,855 57.6% Franklin Roosevelt* (D) 4,259 41.9% 49 0.5% 10,163 6 12 0.97%
1940 81% Wendell Willkie (R) 7,443 59.9% Franklin Roosevelt* (D) 4,973 40.0% 18 0.1% 12,434 8 15 1.02%
1936 84% Franklin Roosevelt* (D) 6,731 55.0% Alf Landon (R) 5,017 41.0% 488 [+] 4.0% 12,236 -2 5 1.07%
1932 76% Franklin Roosevelt (D) 7,347 66.0% Herbert Hoover* (R) 3,725 33.5% 62 [+] 0.6% 11,134 -7 -6 1.07%
1928 77% Herbert Hoover (R) 6,774 61.6% Al Smith (D) 4,231 38.4% 0 0.0% 11,005 0 3 1.09%
1924 70% Robert LaFollette (Prog) 4,314 43.0% Calvin Coolidge (R) 4,168 41.5% 1,556 [+] 15.5% 10,038 -14 -12 1.03%
1920 60% Warren Harding (R) 6,747 77.5% James Cox (D) 1,808 20.8% 151 [+] 1.7% 8,706 7 17 0.97%
1916 41% Charles Evans Hughes (R) 3,347 57.5% Woodrow Wilson* (D) 2,379 40.9% 91 [+] 1.6% 5,817 3 11 1.13%
1912 41% Woodrow Wilson (D) 2,919 49.8% Theodore Roosevelt (Prog) 1,471 25.1% 1,471 [+] 25.1% 5,861 -3 -2 1.19%
1908 42% William J. Bryan (D) 3,026 51.3% William Taft (R) 2,773 47.0% 96 [+] 1.6% 5,895 -9 -5 1.19%
1904 42% Theodore Roosevelt (R) 3,339 54.6% Alton Parker (D) 2,628 43.0% 150 [+] 2.5% 6,117 -9 -2 1.26%
1900 43% William McKinley* (R) 3,366 53.1% William J. Bryan (D) 2,884 45.5% 92 [+] 1.5% 6,342 -5 1 1.20%
* incumbent         PSV: percent of state vote

Historical Statewide Election Results for Clayton County, IA

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

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2022 S3 56% Charles Grassley* (R) 4,839 65.7% Michael Franken (D) 2,512 34.1% 9 [+] 0.1% 7,360 10 0.60%
2022 G 56% Kim Reynolds* (R) 5,110 69.3% Deidre DeJear (D) 2,105 28.6% 157 [+] 2.1% 7,372 11 0.60%
2020 S2 71% Joni Ernst* (R) 5,845 61.4% Theresa Greenfield (D) 3,434 36.1% 245 [+] 2.6% 9,524 10 0.57%
2018 G 59% Kim Reynolds* (R) 4,512 57.0% Fred Hubbell (D) 2,978 37.6% 432 [+] 5.5% 7,922 7 0.60%
2016 S3 66% Charles Grassley* (R) 5,851 64.9% Patty Judge (D) 2,779 30.8% 382 [+] 4.2% 9,012 5 0.58%
2014 S2 51% Joni Ernst (R) 3,810 54.4% Bruce Braley (D) 2,893 41.3% 305 [+] 4.4% 7,008 2 0.62%
2014 G 51% Terry Branstad* (R) 4,449 63.3% Jack Hatch (D) 2,368 33.7% 215 [+] 3.1% 7,032 4 0.62%
2010 S3 50% Charles Grassley* (R) 4,632 66.6% Roxanne Conlin (D) 2,106 30.3% 213 [+] 3.1% 6,951 2 0.62%
2010 G 50% Terry Branstad (R) 3,662 52.3% Chet Culver* (D) 3,096 44.2% 250 [+] 3.6% 7,008 -1 0.62%
2008 S2 63% Tom Harkin* (D) 5,907 66.8% Christopher Reed (R) 2,916 33.0% 18 [+] 0.2% 8,841 -4 0.59%
2006 G 49% Chet Culver (D) 3,728 54.8% Jim Nussle (R) 2,936 43.1% 141 [+] 2.1% 6,805 -1 0.65%
2004 S3 65% Charles Grassley* (R) 6,628 73.0% Art Small (D) 2,303 25.3% 154 [+] 1.7% 9,085 3 0.61%
2002 S2 49% Tom Harkin* (D) 3,861 56.0% Greg Ganske (R) 2,864 41.5% 170 [+] 2.5% 6,895 -2 0.67%
2002 G 50% Tom Vilsack* (D) 3,525 51.0% Doug Gross (R) 3,107 45.0% 274 [+] 4.0% 6,906 0 0.67%
1998 S3 46% Charles Grassley* (R) 4,724 73.6% David Osterberg (D) 1,658 25.8% 39 [+] 0.6% 6,421 5 0.68%
1998 G 47% Tom Vilsack (D) 3,332 50.9% Jim Ross Lightfoot (R) 3,129 47.8% 87 [+] 1.3% 6,548 1 0.68%
1996 S2 57% Tom Harkin* (D) 4,357 55.2% Jim Ross Lightfoot (R) 3,441 43.6% 96 [+] 1.2% 7,894 -3 0.64%
1994 G 52% Terry Branstad* (R) 4,445 61.4% Bonnie Campbell (D) 2,698 37.3% 93 [+] 1.3% 7,236 5 0.73%
1992 S3 57% Charles Grassley* (R) 5,944 75.3% Jean Lloyd-Jones (D) 1,659 21.0% 296 [+] 3.7% 7,899 6 0.61%
1990 S2 52% Tom Tauke (R) 3,914 54.9% Tom Harkin* (D) 3,218 45.1% 1 [+] 0.0% 7,133 9 0.72%
1990 G 52% Terry Branstad* (R) 4,815 67.3% Donald Avenson (D) 2,312 32.3% 25 [+] 0.3% 7,152 7 0.73%
1986 S3 46% Charles Grassley* (R) 4,749 73.0% John Roehrick (D) 1,742 26.8% 18 [+] 0.3% 6,509 7 0.73%
1986 G 47% Terry Branstad* (R) 3,562 54.0% Lowell Junkins (D) 3,036 46.0% 0 0.0% 6,598 2 0.72%
1984 S2 58% Roger Jepsen* (R) 4,294 51.7% Tom Harkin (D) 3,943 47.4% 76 [+] 0.9% 8,313 8 0.64%
1982 G 52% Terry Branstad (R) 4,832 64.1% Roxanne Conlin (D) 2,676 35.5% 31 [+] 0.4% 7,539 11 0.73%
1980 S3 61% Charles Grassley (R) 5,132 56.9% John Culver* (D) 3,834 42.5% 54 [+] 0.6% 9,020 3 0.71%
1978 S2 50% Roger Jepsen (R) 3,755 53.6% Dick Clark* (D) 3,202 45.7% 52 [+] 0.7% 7,009 2 0.85%
1978 G 52% Robert Ray* (R) 4,302 59.7% Jerry Fitzgerald (D) 2,871 39.8% 38 [+] 0.5% 7,211 1 0.86%
1974 S3 52% John Culver (D) 3,705 52.1% David Stanley (R) 3,357 47.2% 47 [+] 0.7% 7,109 0 0.80%
1974 G 53% Robert Ray* (R) 4,329 60.0% James Schaben (D) 2,817 39.1% 67 [+] 0.9% 7,213 2 0.78%
1972 S2 64% Dick Clark (D) 4,612 52.8% Jack Miller* (R) 4,032 46.2% 84 [+] 1.0% 8,728 2 0.73%
1972 G 65% Robert Ray* (R) 5,339 60.0% Paul Franzenburg (D) 3,425 38.5% 127 [+] 1.4% 8,891 2 0.73%
1970 G 51% Robert Ray* (R) 3,152 48.5% Robert Fulton (D) 3,145 48.4% 203 [+] 3.1% 6,500 -2 0.82%
1968 S3 70% David Stanley (R) 4,626 53.4% Harold Hughes (D) 4,036 46.6% 7 [+] 0.1% 8,669 4 0.76%
1968 G 70% Robert Ray (R) 4,997 58.1% Paul Franzenburg (D) 3,598 41.9% 2 [+] 0.0% 8,597 4 0.76%
1966 S2 53% Jack Miller* (R) 4,177 63.3% E.B. Smith (D) 2,397 36.3% 28 [+] 0.4% 6,602 2 0.77%
1966 G 56% Harold Hughes* (D) 3,786 54.4% William Murray (R) 3,166 45.5% 9 [+] 0.1% 6,961 1 0.78%
1964 G 75% Harold Hughes* (D) 5,917 62.6% Evan Hultman (R) 3,409 36.1% 130 [+] 1.4% 9,456 5 0.81%
1962 S3 59% Bourke Hickenlooper* (R) 4,054 53.6% E.B. Smith (D) 3,503 46.4% 0 0.0% 7,557 0 0.94%
1962 G 60% Harold Hughes (D) 4,068 53.2% Norman Erbe* (R) 3,574 46.8% 0 0.0% 7,642 -1 0.93%
1960 S2 83% Jack Miller (R) 5,646 52.5% Herschel Loveless (D) 5,109 47.5% 0 0.0% 10,755 1 0.87%
1960 G 83% Norman Erbe (R) 5,622 52.4% Edward McManus (D) 5,103 47.6% 0 0.0% 10,725 0 0.87%
*: 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 Clayton County, IA

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

DateDistrictWinnerRunner-Up OtherTotal Votes
2024-11-05 IA02Ashley Hinson* (R) 6,409 69.9% Sarah Corkery (D) 2,647 28.9% 115 1.3% 9,171
County Total for 2024-11-05:   9,171
2022-11-08 IA02Ashley Hinson* (R) 4,844 65.7% Liz Mathis (D) 2,528 34.3% 5 0.1% 7,377
County Total for 2022-11-08:   7,377
2020-11-03 IA01Ashley Hinson (R) 5,895 62.1% Abby Finkenauer* (D) 3,590 37.8% 6 0.1% 9,491
County Total for 2020-11-03:   9,491
2018-11-06 IA01Rod Blum* (R) 4,320 54.7% Abby Finkenauer (D) 3,311 42.0% 261 3.3% 7,892
County Total for 2018-11-06:   7,892
2016-11-08 IA01Rod Blum* (R) 5,393 60.5% Monica Vernon (D) 3,504 39.3% 11 0.1% 8,908
County Total for 2016-11-08:   8,908
2014-11-04 IA01Rod Blum (R) 3,922 56.5% Pat Murphy (D) 3,010 43.4% 7 0.1% 6,939
County Total for 2014-11-04:   6,939
2012-11-06 IA01Bruce Braley* (D) 4,769 53.5% Ben Lange (R) 3,975 44.6% 163 1.8% 8,907
County Total for 2012-11-06:   8,907
2010-11-02 IA01Bruce Braley* (D) 3,317 48.2% Ben Lange (R) 3,268 47.5% 298 4.3% 6,883
County Total for 2010-11-02:   6,883
2008-11-04 IA01Bruce Braley* (D) 5,704 66.3% David Hartsuch (R) 2,893 33.6% 4 0.0% 8,601
County Total for 2008-11-04:   8,601
2006-11-07 IA01Bruce Braley (D) 3,414 51.2% Mike Whalen (R) 3,088 46.3% 171 2.6% 6,673
County Total for 2006-11-07:   6,673
2004-11-02 IA01Jim Nussle* (R) 5,514 61.3% Bill Gluba (D) 3,347 37.2% 139 1.5% 9,000
County Total for 2004-11-02:   9,000
2002-11-05 IA01Jim Nussle* (R) 4,355 63.3% Ann Hutchinson (D) 2,518 36.6% 12 0.2% 6,885
County Total for 2002-11-05:   6,885
2000-11-07 IA02Jim Nussle* (R) 4,715 57.8% Donna Smith (D) 3,405 41.7% 36 0.4% 8,156
County Total for 2000-11-07:   8,156
1998-11-03 IA02Jim Nussle* (R) 3,797 59.5% Rob Tully (D) 2,554 40.1% 26 0.4% 6,377
County Total for 1998-11-03:   6,377
1996-11-05 IA02Jim Nussle* (R) 4,506 57.3% Donna Smith (D) 3,328 42.3% 25 0.3% 7,859
County Total for 1996-11-05:   7,859
1994-11-08 IA02Jim Nussle* (R) 4,546 65.2% Dave Nagle (D) 2,394 34.3% 30 0.4% 6,970
County Total for 1994-11-08:   6,970
1992-11-03 IA02Jim Nussle* (R) 5,183 58.6% Dave Nagle* (D) 3,615 40.9% 41 0.5% 8,839
County Total for 1992-11-03:   8,839
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for Clayton County, IA

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2024 9,786 4,716 48.2% 2,204 22.5% 2,866 29.3% Rep +2,512 Rep +25.7% 74%
2022 10,764 4,287 39.8% 2,813 26.1% 3,664 34.0% Rep +1,474 Rep +13.7% 82%
2020 11,679 4,085 35.0% 3,323 28.5% 4,271 36.6% Rep +762 Rep +6.5% 88%
2018 11,523 3,657 31.7% 3,222 28.0% 4,644 40.3% Rep +435 Rep +3.8% 86%
2016 11,537 3,532 30.6% 3,477 30.1% 4,528 39.2% Rep +55 Rep +0.5% 86%
2014 11,404 3,294 28.9% 3,325 29.2% 4,785 42.0% Dem +31 Dem +0.3% 84%
2012 11,209 3,229 28.8% 3,353 29.9% 4,627 41.3% Dem +124 Dem +1.1% 81%
2010 12,048 3,348 27.8% 3,754 31.2% 4,946 41.1% Dem +406 Dem +3.4% 87%
2008 11,876 3,161 26.6% 3,920 33.0% 4,795 40.4% Dem +759 Dem +6.4% 85%
2006 11,372 3,141 27.6% 3,398 29.9% 4,833 42.5% Dem +257 Dem +2.3% 82%
2004 12,887 3,614 28.0% 3,654 28.4% 5,619 43.6% Dem +40 Dem +0.3% 92%
2002 12,147 3,631 29.9% 3,456 28.5% 5,060 41.7% Rep +175 Rep +1.4% 87%
2000 11,893 3,585 30.1% 3,512 29.5% 4,796 40.3% Rep +73 Rep +0.6% 85%
1994 10,995 3,748 34.1% 3,512 31.9% 3,735 34.0% Rep +236 Rep +2.1% 80%
1986 10,396 3,521 33.9% 3,693 35.5% 3,182 30.6% Dem +172 Dem +1.7% 73%
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.