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Buchanan County, IA


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

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

 

Tracts in Buchanan County, IA

   



Click here to view demographic data for Buchanan County, IA

2024 population: 20,733   ( 170 from 2020)
Land area: 571.1 square miles
Population density: 36.3 persons per square mile

2024 Census data
White:19,660 94.82% 0.3%
Black:2151.04% 108.7%
Indian:360.17% 12.5%
Asian:1190.57% 0.8%
2+ races:2511.21% 4.1%
Hispanic:4522.18% 29.5%
Total non-White:1,0735.18% 27.3%

2020-2024 ComponentsNumberRate
Births:1,089 13.2
Deaths:94311.5
Net Migration: -165-2.0
Net Immigration: 1752.1
Change in White population:-60 -0.3
Change in Non-White pop.:230 1.1



Historical Presidential Election Results for Buchanan County, IA

Recent Trends
VotesΔ MarginSwing %
2024 vs. 2020 R +370 R +773 R + 7.4%
D -403
2024 vs. 2016 R +1,280 R +1,484 R + 12.4%
D -204
2020 vs. 2016 R +910 R +711 R + 5.0%
D +199
2024 vs. 2012 R +2,340 R +4,485 R + 42.7%
D -2,145
2016 vs. 2008 R +1,371 R +3,451 R + 35.0%
D -2,080
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 70% Donald Trump (R) 6,790 63.2% Kamala Harris (D) 3,766 35.0% 194 [+] 1.8% 10,750 7 13 0.65%
2020 72% Donald Trump* (R) 6,420 59.6% Joe Biden (D) 4,169 38.7% 185 [+] 1.7% 10,774 6 13 0.64%
2016 68% Donald Trump (R) 5,510 53.7% Hillary Clinton (D) 3,970 38.7% 772 [+] 7.5% 10,252 3 8 0.65%
2012 69% Barack Obama* (D) 5,911 56.1% Mitt Romney (R) 4,450 42.2% 174 [+] 1.7% 10,535 -4 -5 0.67%
2008 68% Barack Obama (D) 6,050 58.5% John McCain (R) 4,139 40.0% 153 [+] 1.5% 10,342 -4 -6 0.67%
2004 69% John Kerry (D) 5,608 53.5% George W. Bush* (R) 4,797 45.8% 70 [+] 0.7% 10,475 -4 -5 0.70%
2000 62% Albert Gore, Jr. (D) 5,045 53.6% George W. Bush (R) 4,092 43.5% 273 [+] 2.9% 9,410 -5 -4 0.72%
1996 60% Bill Clinton* (D) 4,997 55.8% Robert Dole (R) 3,043 34.0% 911 [+] 10.2% 8,951 -6 -7 0.73%
1992 66% Bill Clinton (D) 4,166 43.2% George Bush* (R) 3,313 34.3% 2,175 [+] 22.5% 9,654 -3 -3 0.71%
1988 57% Michael Dukakis (D) 4,778 57.4% George Bush (R) 3,495 42.0% 48 [+] 0.6% 8,321 -2 -11 0.68%
1984 61% Ronald Reagan* (R) 4,965 54.3% Walter Mondale (D) 4,129 45.1% 58 0.6% 9,152 1 -5 0.69%
1980 62% Ronald Reagan (R) 5,041 53.5% Jimmy Carter* (D) 3,605 38.3% 776 [+] 8.2% 9,422 2 3 0.72%
1976 66% Gerald Ford* (R) 4,794 52.0% Jimmy Carter (D) 4,258 46.2% 171 [+] 1.9% 9,223 3 4 0.72%
1972 66% Richard Nixon* (R) 5,277 58.3% George McGovern (D) 3,609 39.9% 162 [+] 1.8% 9,048 1 -2 0.74%
1968 71% Richard Nixon (R) 4,541 52.4% Hubert Humphrey (D) 3,670 42.3% 463 [+] 5.3% 8,674 -1 9 0.74%
1964 71% Lyndon Johnson* (D) 5,621 63.7% Barry Goldwater (R) 3,187 36.1% 15 0.2% 8,823 -2 -2 0.74%
1960 76% Richard Nixon (R) 5,179 54.9% John Kennedy (D) 4,251 45.1% 3 0.0% 9,433 -2 5 0.74%
1956 69% Dwight Eisenhower* (R) 5,512 61.0% Adlai Stevenson (D) 3,513 38.9% 10 0.1% 9,035 2 4 0.73%
1952 72% Dwight Eisenhower (R) 6,431 67.8% Adlai Stevenson (D) 3,019 31.8% 34 0.4% 9,484 4 13 0.75%
1948 66% Thomas Dewey (R) 4,310 50.6% Harry Truman* (D) 4,127 48.4% 86 [+] 1.0% 8,523 3 5 0.82%
1944 67% Thomas Dewey (R) 4,653 54.7% Franklin Roosevelt* (D) 3,841 45.1% 14 0.2% 8,508 3 9 0.81%
1940 82% Wendell Willkie (R) 5,630 54.6% Franklin Roosevelt* (D) 4,649 45.1% 30 0.3% 10,309 3 10 0.85%
1936 86% Franklin Roosevelt* (D) 5,025 50.8% Alf Landon (R) 4,734 47.8% 135 [+] 1.4% 9,894 5 11 0.87%
1932 85% Franklin Roosevelt (D) 5,004 52.7% Herbert Hoover* (R) 4,401 46.3% 95 [+] 1.0% 9,500 6 7 0.92%
1928 83% Herbert Hoover (R) 5,885 65.5% Al Smith (D) 3,099 34.5% 0 0.0% 8,984 4 7 0.89%
1924 80% Calvin Coolidge (R) 5,459 63.1% John Davis (D) 1,780 20.6% 1,409 [+] 16.3% 8,648 8 9 0.89%
1920 73% Warren Harding (R) 6,334 79.2% James Cox (D) 1,600 20.0% 63 [+] 0.8% 7,997 8 19 0.89%
1916 46% Charles Evans Hughes (R) 3,000 61.7% Woodrow Wilson* (D) 1,808 37.2% 52 [+] 1.1% 4,860 7 16 0.94%
1912 45% Woodrow Wilson (D) 1,866 39.5% Theodore Roosevelt (Prog) 1,455 30.8% 1,398 [+] 29.6% 4,719 3 4 0.96%
1908 45% William Taft (R) 2,552 55.8% William J. Bryan (D) 1,889 41.3% 136 [+] 3.0% 4,577 0 4 0.93%
1904 43% Theodore Roosevelt (R) 2,798 60.9% Alton Parker (D) 1,545 33.6% 249 [+] 5.4% 4,592 -2 5 0.94%
1900 48% William McKinley* (R) 2,958 57.0% William J. Bryan (D) 2,053 39.5% 183 [+] 3.5% 5,194 -1 5 0.98%
* incumbent         PSV: percent of state vote

Historical Statewide Election Results for Buchanan County, IA

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

YearTypeTurnout WinnerRunner-Up OtherTotal VotesDiff PSV
2022 S3 54% Charles Grassley* (R) 5,085 62.3% Michael Franken (D) 3,071 37.6% 10 [+] 0.1% 8,166 6 0.67%
2022 G 54% Kim Reynolds* (R) 5,356 65.2% Deidre DeJear (D) 2,650 32.3% 211 [+] 2.6% 8,217 7 0.67%
2020 S2 71% Joni Ernst* (R) 6,063 56.6% Theresa Greenfield (D) 4,292 40.1% 349 [+] 3.3% 10,704 5 0.64%
2018 G 56% Kim Reynolds* (R) 4,400 51.8% Fred Hubbell (D) 3,865 45.5% 228 [+] 2.7% 8,493 2 0.64%
2016 S3 67% Charles Grassley* (R) 6,382 62.9% Patty Judge (D) 3,313 32.6% 454 [+] 4.5% 10,149 3 0.66%
2014 S2 52% Joni Ernst (R) 3,945 50.1% Bruce Braley (D) 3,538 44.9% 398 [+] 5.1% 7,881 -2 0.70%
2014 G 52% Terry Branstad* (R) 4,498 57.0% Jack Hatch (D) 3,118 39.5% 277 [+] 3.5% 7,893 -2 0.70%
2010 S3 52% Charles Grassley* (R) 5,291 67.1% Roxanne Conlin (D) 2,446 31.0% 153 [+] 1.9% 7,890 3 0.71%
2010 G 52% Terry Branstad (R) 3,889 48.9% Chet Culver* (D) 3,788 47.6% 273 [+] 3.4% 7,950 -4 0.71%
2008 S2 67% Tom Harkin* (D) 6,952 67.6% Christopher Reed (R) 3,326 32.4% 2 [+] 0.0% 10,280 -5 0.68%
2006 G 53% Chet Culver (D) 4,635 58.0% Jim Nussle (R) 3,263 40.8% 97 [+] 1.2% 7,995 -4 0.76%
2004 S3 69% Charles Grassley* (R) 7,463 71.4% Art Small (D) 2,839 27.2% 148 [+] 1.4% 10,450 1 0.71%
2002 S2 48% Tom Harkin* (D) 4,285 59.0% Greg Ganske (R) 2,838 39.1% 141 [+] 1.9% 7,264 -5 0.71%
2002 G 48% Tom Vilsack* (D) 4,079 56.0% Doug Gross (R) 2,970 40.7% 240 [+] 3.3% 7,289 -4 0.71%
1998 S3 49% Charles Grassley* (R) 5,228 71.5% David Osterberg (D) 2,008 27.5% 79 [+] 1.1% 7,315 3 0.77%
1998 G 49% Tom Vilsack (D) 4,137 56.3% Jim Ross Lightfoot (R) 3,068 41.7% 144 [+] 2.0% 7,349 -5 0.77%
1996 S2 60% Tom Harkin* (D) 5,214 58.3% Jim Ross Lightfoot (R) 3,583 40.0% 152 [+] 1.7% 8,949 -7 0.73%
1994 G 51% Terry Branstad* (R) 4,222 56.3% Bonnie Campbell (D) 3,151 42.0% 132 [+] 1.8% 7,505 -1 0.75%
1992 S3 66% Charles Grassley* (R) 7,329 75.9% Jean Lloyd-Jones (D) 2,075 21.5% 248 [+] 2.6% 9,652 6 0.75%
1990 S2 51% Tom Tauke (R) 3,694 50.7% Tom Harkin* (D) 3,591 49.3% 5 [+] 0.1% 7,290 5 0.74%
1990 G 46% Terry Branstad* (R) 3,929 59.8% Donald Avenson (D) 2,575 39.2% 61 [+] 0.9% 6,565 -1 0.67%
1986 S3 48% Charles Grassley* (R) 4,821 68.7% John Roehrick (D) 2,167 30.9% 31 [+] 0.4% 7,019 3 0.79%
1986 G 47% Lowell Junkins (D) 3,671 52.5% Terry Branstad* (R) 3,313 47.4% 9 [+] 0.1% 6,993 -4 0.77%
1984 S2 62% Tom Harkin (D) 4,910 52.9% Roger Jepsen* (R) 4,187 45.1% 184 [+] 2.0% 9,281 1 0.72%
1982 G 51% Terry Branstad (R) 4,361 57.2% Roxanne Conlin (D) 3,187 41.8% 77 [+] 1.0% 7,625 4 0.73%
1980 S3 59% Charles Grassley (R) 5,340 59.0% John Culver* (D) 3,682 40.7% 27 [+] 0.3% 9,049 6 0.71%
1978 S2 45% Roger Jepsen (R) 3,604 56.2% Dick Clark* (D) 2,766 43.1% 42 [+] 0.7% 6,412 5 0.78%
1978 G 45% Robert Ray* (R) 3,873 60.0% Jerry Fitzgerald (D) 2,577 39.9% 7 [+] 0.1% 6,457 2 0.77%
1974 S3 51% John Culver (D) 3,816 53.6% David Stanley (R) 3,262 45.9% 36 [+] 0.5% 7,114 -1 0.80%
1974 G 52% Robert Ray* (R) 3,896 54.4% James Schaben (D) 3,223 45.0% 39 [+] 0.5% 7,158 -4 0.78%
1972 S2 66% Dick Clark (D) 5,340 59.1% Jack Miller* (R) 3,680 40.7% 22 [+] 0.2% 9,042 -3 0.75%
1972 G 66% Robert Ray* (R) 5,049 56.1% Paul Franzenburg (D) 3,898 43.3% 52 [+] 0.6% 8,999 -2 0.74%
1970 G 52% Robert Fulton (D) 3,220 49.4% Robert Ray* (R) 3,155 48.4% 149 [+] 2.3% 6,524 -3 0.82%
1968 S3 70% David Stanley (R) 4,565 53.5% Harold Hughes (D) 3,964 46.5% 1 [+] 0.0% 8,530 4 0.75%
1968 G 69% Robert Ray (R) 4,588 54.1% Paul Franzenburg (D) 3,890 45.9% 1 [+] 0.0% 8,479 0 0.75%
1966 S2 54% Jack Miller* (R) 4,249 64.5% E.B. Smith (D) 2,313 35.1% 21 [+] 0.3% 6,583 4 0.77%
1966 G 55% Harold Hughes* (D) 3,469 51.5% William Murray (R) 3,264 48.4% 7 [+] 0.1% 6,740 4 0.75%
1964 G 71% Harold Hughes* (D) 5,833 66.9% Evan Hultman (R) 2,848 32.7% 35 [+] 0.4% 8,716 1 0.75%
1962 S3 45% Bourke Hickenlooper* (R) 2,989 53.9% E.B. Smith (D) 2,554 46.1% 0 0.0% 5,543 1 0.69%
1962 G 44% Harold Hughes (D) 2,964 54.1% Norman Erbe* (R) 2,510 45.9% 0 0.0% 5,474 -2 0.67%
1960 S2 74% Jack Miller (R) 4,792 52.3% Herschel Loveless (D) 4,372 47.7% 0 0.0% 9,164 0 0.74%
1960 G 74% Norman Erbe (R) 4,738 51.7% Edward McManus (D) 4,420 48.3% 0 0.0% 9,158 0 0.74%
*: 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 Buchanan 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) 6,720 63.9% Sarah Corkery (D) 3,573 34.0% 230 2.2% 10,523
County Total for 2024-11-05:   10,523
2022-11-08 IA02Ashley Hinson* (R) 5,028 61.6% Liz Mathis (D) 3,128 38.3% 9 0.1% 8,165
County Total for 2022-11-08:   8,165
2020-11-03 IA01Ashley Hinson (R) 6,180 58.0% Abby Finkenauer* (D) 4,481 42.0% 3 0.0% 10,664
County Total for 2020-11-03:   10,664
2018-11-06 IA01Rod Blum* (R) 4,166 49.3% Abby Finkenauer (D) 3,977 47.0% 310 3.7% 8,453
County Total for 2018-11-06:   8,453
2016-11-08 IA01Rod Blum* (R) 5,739 57.4% Monica Vernon (D) 4,250 42.5% 14 0.1% 10,003
County Total for 2016-11-08:   10,003
2014-11-04 IA01Rod Blum (R) 4,032 51.5% Pat Murphy (D) 3,779 48.3% 11 0.1% 7,822
County Total for 2014-11-04:   7,822
2012-11-06 IA01Bruce Braley* (D) 5,413 52.0% Ben Lange (R) 4,885 46.9% 115 1.1% 10,413
County Total for 2012-11-06:   10,413
2010-11-02 IA01Ben Lange (R) 4,147 52.7% Bruce Braley* (D) 3,504 44.5% 220 2.8% 7,871
County Total for 2010-11-02:   7,871
2008-11-04 IA01Bruce Braley* (D) 6,750 67.1% David Hartsuch (R) 3,310 32.9% 0 0.0% 10,060
County Total for 2008-11-04:   10,060
2006-11-07 IA01Bruce Braley (D) 4,261 54.6% Mike Whalen (R) 3,381 43.3% 163 2.1% 7,805
County Total for 2006-11-07:   7,805
2004-11-02 IA01Jim Nussle* (R) 6,103 58.8% Bill Gluba (D) 4,121 39.7% 164 1.6% 10,388
County Total for 2004-11-02:   10,388
2002-11-05 IA01Jim Nussle* (R) 4,304 59.3% Ann Hutchinson (D) 2,944 40.5% 15 0.2% 7,263
County Total for 2002-11-05:   7,263
2000-11-07 IA02Jim Nussle* (R) 5,305 56.7% Donna Smith (D) 3,972 42.4% 83 0.9% 9,360
County Total for 2000-11-07:   9,360
1998-11-03 IA02Jim Nussle* (R) 4,112 56.1% Rob Tully (D) 3,141 42.8% 79 1.1% 7,332
County Total for 1998-11-03:   7,332
1996-11-05 IA02Jim Nussle* (R) 4,942 55.2% Donna Smith (D) 3,952 44.2% 51 0.6% 8,945
County Total for 1996-11-05:   8,945
1994-11-08 IA02Jim Nussle* (R) 4,363 58.9% Dave Nagle (D) 2,978 40.2% 67 0.9% 7,408
County Total for 1994-11-08:   7,408
1992-11-03 IA02Jim Nussle* (R) 5,358 55.2% Dave Nagle* (D) 4,273 44.0% 84 0.9% 9,715
County Total for 1992-11-03:   9,715
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for Buchanan County, IA

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2024 10,884 3,882 35.7% 2,836 26.1% 4,166 38.3% Rep +1,046 Rep +9.6% 71%
2022 12,257 3,993 32.6% 3,297 26.9% 4,967 40.5% Rep +696 Rep +5.7% 80%
2020 13,542 3,874 28.6% 3,844 28.4% 5,824 43.0% Rep +30 Rep +0.2% 89%
2018 13,223 3,222 24.4% 3,531 26.7% 6,470 48.9% Dem +309 Dem +2.3% 87%
2016 13,401 3,323 24.8% 3,660 27.3% 6,418 47.9% Dem +337 Dem +2.5% 88%
2014 13,288 3,112 23.4% 3,741 28.2% 6,435 48.4% Dem +629 Dem +4.7% 87%
2012 13,464 3,224 23.9% 3,942 29.3% 6,298 46.8% Dem +718 Dem +5.3% 88%
2010 13,630 3,214 23.6% 4,289 31.5% 6,127 45.0% Dem +1,075 Dem +7.9% 89%
2008 13,656 3,068 22.5% 4,579 33.5% 6,009 44.0% Dem +1,511 Dem +11.1% 90%
2006 13,350 3,216 24.1% 4,343 32.5% 5,791 43.4% Dem +1,127 Dem +8.4% 88%
2004 13,648 3,299 24.2% 4,297 31.5% 6,052 44.3% Dem +998 Dem +7.3% 90%
2002 13,157 3,483 26.5% 3,973 30.2% 5,701 43.3% Dem +490 Dem +3.7% 87%
2000 13,461 3,639 27.0% 4,162 30.9% 5,660 42.0% Dem +523 Dem +3.9% 89%
1994 11,642 3,404 29.2% 4,254 36.5% 3,984 34.2% Dem +850 Dem +7.3% 79%
1986 11,715 3,394 29.0% 4,288 36.6% 4,033 34.4% Dem +894 Dem +7.6% 79%
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.