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Sioux County, IA


Designated Market Area: Sioux City, IA-NE-SD
USDA County Type (2015): Manufacturing
American Communities Project County Type (2023): Rural Middle America

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

 

Tracts in Sioux County, IA

   



Click here to view demographic data for Sioux County, IA

2022 population: 36,050   ( 2,346 from 2010 , 180 from 2020)
Land area: 767.9 square miles
Population density: 46.9 persons per square mile

2022 Census data
White:30,890 85.69% 2.7%
Black:2010.56% 93.3%
Indian:850.24% 77.1%
Asian:3050.85% 14.2%
2+ races:2410.67% 26.8%
Hispanic:4,32812.01% 44.2%
Total non-White:5,16014.31% 42.8%

2020-2022 ComponentsNumberRate
Births:1,125 15.7
Deaths:6348.8
Net Migration: -416-5.8
Net Immigration: 1011.4
Change in White population:800 2.4
Change in Non-White pop.:1,546 4.6



Historical Presidential Election Results for Sioux County, IA

Recent Trends
VotesΔ MarginSwing %
2020 vs. 2016 R +895 R +176 D + 5.4%
D +719
2020 vs. 2012 R +1,273 R +954 D + 0.7%
D +319
2020 vs. 2008 R +2,190 R +2,201 R + 4.4%
D -11
2016 vs. 2008 R +1,295 R +2,025 R + 9.8%
D -730
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
2020 73% Donald Trump* (R) 15,680 82.3% Joe Biden (D) 3,019 15.8% 352 [+] 1.8% 19,051 29 36 1.13%
2016 71% Donald Trump (R) 14,785 81.3% Hillary Clinton (D) 2,300 12.6% 1,109 [+] 6.1% 18,194 30 35 1.16%
2012 69% Mitt Romney (R) 14,407 83.2% Barack Obama* (D) 2,700 15.6% 201 [+] 1.2% 17,308 37 36 1.09%
2008 69% John McCain (R) 13,490 80.9% Barack Obama (D) 3,030 18.2% 145 [+] 0.9% 16,665 37 35 1.08%
2004 70% George W. Bush* (R) 14,229 85.9% John Kerry (D) 2,259 13.6% 82 [+] 0.5% 16,570 36 35 1.10%
2000 64% George W. Bush (R) 12,241 83.3% Albert Gore, Jr. (D) 2,148 14.6% 303 [+] 2.1% 14,692 35 35 1.12%
1996 64% Robert Dole (R) 10,864 77.0% Bill Clinton* (D) 2,392 17.0% 854 [+] 6.1% 14,110 37 36 1.14%
1992 69% George Bush* (R) 10,637 72.2% Bill Clinton (D) 2,226 15.1% 1,867 [+] 12.7% 14,730 35 35 1.09%
1988 63% George Bush (R) 10,270 77.3% Michael Dukakis (D) 2,923 22.0% 95 [+] 0.7% 13,288 33 24 1.08%
1984 68% Ronald Reagan* (R) 11,665 81.6% Walter Mondale (D) 2,585 18.1% 43 0.3% 14,293 28 23 1.08%
1980 67% Ronald Reagan (R) 10,768 76.0% Jimmy Carter* (D) 2,698 19.0% 701 [+] 4.9% 14,167 25 25 1.08%
1976 67% Gerald Ford* (R) 9,448 73.0% Jimmy Carter (D) 3,322 25.7% 165 [+] 1.3% 12,935 24 25 1.01%
1972 74% Richard Nixon* (R) 10,721 78.3% George McGovern (D) 2,867 20.9% 109 [+] 0.8% 13,697 21 18 1.12%
1968 78% Richard Nixon (R) 10,010 80.0% Hubert Humphrey (D) 2,181 17.4% 316 [+] 2.5% 12,507 27 37 1.07%
1964 79% Barry Goldwater (R) 8,078 65.6% Lyndon Johnson* (D) 4,233 34.4% 12 0.1% 12,323 28 27 1.04%
1960 85% Richard Nixon (R) 10,284 79.5% John Kennedy (D) 2,643 20.4% 7 0.1% 12,934 23 30 1.02%
1956 76% Dwight Eisenhower* (R) 9,651 78.3% Adlai Stevenson (D) 2,666 21.6% 11 0.1% 12,328 19 21 1.00%
1952 76% Dwight Eisenhower (R) 10,275 83.2% Adlai Stevenson (D) 2,050 16.6% 24 0.2% 12,349 19 28 0.97%
1948 60% Thomas Dewey (R) 5,597 57.1% Harry Truman* (D) 4,042 41.2% 162 [+] 1.7% 9,801 10 12 0.94%
1944 60% Thomas Dewey (R) 6,552 65.9% Franklin Roosevelt* (D) 3,369 33.9% 19 0.2% 9,940 14 20 0.94%
1940 70% Wendell Willkie (R) 7,585 64.6% Franklin Roosevelt* (D) 4,144 35.3% 21 0.2% 11,750 13 20 0.97%
1936 67% Franklin Roosevelt* (D) 5,553 52.0% Alf Landon (R) 4,543 42.6% 573 [+] 5.4% 10,669 0 6 0.93%
1932 65% Franklin Roosevelt (D) 6,170 60.5% Herbert Hoover* (R) 3,943 38.6% 89 [+] 0.9% 10,202 -1 -1 0.98%
1928 61% Herbert Hoover (R) 6,378 69.2% Al Smith (D) 2,839 30.8% 0 0.0% 9,217 7 11 0.91%
1924 56% Calvin Coolidge (R) 4,960 58.9% Robert LaFollette (Prog) 2,556 30.4% 900 [+] 10.7% 8,416 4 5 0.86%
1920 51% Warren Harding (R) 6,068 79.3% James Cox (D) 1,510 19.7% 75 [+] 1.0% 7,653 8 19 0.86%
1916 30% Charles Evans Hughes (R) 2,261 51.9% Woodrow Wilson* (D) 2,049 47.0% 47 [+] 1.1% 4,357 -2 6 0.85%
1912 33% Theodore Roosevelt (Prog) 2,566 55.0% Woodrow Wilson (D) 1,453 31.2% 645 [+] 13.8% 4,664 -12 -11 0.95%
1908 35% William Taft (R) 2,697 58.1% William J. Bryan (D) 1,891 40.7% 54 [+] 1.2% 4,642 2 6 0.94%
1904 33% Theodore Roosevelt (R) 2,992 70.8% Alton Parker (D) 1,151 27.2% 81 [+] 1.9% 4,224 7 14 0.87%
1900 40% William McKinley* (R) 3,025 61.7% William J. Bryan (D) 1,809 36.9% 69 [+] 1.4% 4,903 4 10 0.92%
* incumbent         PSV: percent of state vote



2020 President, Sioux County, IA
CandidateVotesPct
Joe Biden (D) 3,019 15.8%
Donald Trump* (R) 15,680 82.3%
Jo Jorgensen (Lbt) 170 0.9%
Other 182 1.0%
TOTAL 19,051
Turnout: 73% Diff (St): 29 Diff (US): 36


2016 President, Sioux County, IA
CandidateVotesPct
Hillary Clinton (D) 2,300 12.6%
Donald Trump (R) 14,785 81.3%
Gary Johnson (Lbt) 435 2.4%
Jill Stein (Grn) 53 0.3%
Evan McMullin (I) 352 1.9%
Other 269 1.5%
TOTAL 18,194
Turnout: 71% Diff (St): 30 Diff (US): 35


2012 President, Sioux County, IA
CandidateVotesPct
Barack Obama* (D) 2,700 15.6%
Mitt Romney (R) 14,407 83.2%
Gary Johnson (Lbt) 76 0.4%
Other 125 0.7%
TOTAL 17,308
Turnout: 69% Diff (St): 37 Diff (US): 36


2008 President, Sioux County, IA
CandidateVotesPct
Barack Obama (D) 3,030 18.2%
John McCain (R) 13,490 80.9%
Ralph Nader (I) 34 0.2%
Bob Barr (Lbt) 31 0.2%
Other 80 0.5%
TOTAL 16,665
Turnout: 69% Diff (St): 37 Diff (US): 35


2004 President, Sioux County, IA
CandidateVotesPct
George W. Bush* (R) 14,229 85.9%
John Kerry (D) 2,259 13.6%
Ralph Nader (I) 42 0.3%
Other 40 0.2%
TOTAL 16,570
Turnout: 70% Diff (St): 36 Diff (US): 35


2000 President, Sioux County, IA
CandidateVotesPct
George W. Bush (R) 12,241 83.3%
Albert Gore, Jr. (D) 2,148 14.6%
Ralph Nader (Grn) 156 1.1%
Pat Buchanan (Ref) 83 0.6%
Other 64 0.4%
TOTAL 14,692
Turnout: 64% Diff (St): 35 Diff (US): 35


1996 President, Sioux County, IA
CandidateVotesPct
Bill Clinton* (D) 2,392 17.0%
Robert Dole (R) 10,864 77.0%
Ross Perot (Ref) 718 5.1%
Ralph Nader (Grn) 42 0.3%
Harry Browne (Lbt) 16 0.1%
Other 78 0.6%
TOTAL 14,110
Turnout: 64% Diff (St): 37 Diff (US): 36


1992 President, Sioux County, IA
CandidateVotesPct
Bill Clinton (D) 2,226 15.1%
George Bush* (R) 10,637 72.2%
Ross Perot (I) 1,771 12.0%
Other 96 0.7%
TOTAL 14,730
Turnout: 69% Diff (St): 35 Diff (US): 35


1988 President, Sioux County, IA
CandidateVotesPct
George Bush (R) 10,270 77.3%
Michael Dukakis (D) 2,923 22.0%
Ron Paul (Lbt) 12 0.1%
Other 83 0.6%
TOTAL 13,288
Turnout: 63% Diff (St): 33 Diff (US): 24


1984 President, Sioux County, IA
CandidateVotesPct
Ronald Reagan* (R) 11,665 81.6%
Walter Mondale (D) 2,585 18.1%
Other 43 0.3%
TOTAL 14,293
Turnout: 68% Diff (St): 28 Diff (US): 23


1980 President, Sioux County, IA
CandidateVotesPct
Ronald Reagan (R) 10,768 76.0%
Jimmy Carter* (D) 2,698 19.0%
John Anderson (I) 610 4.3%
Edward Clark (Lbt) 64 0.5%
Other 27 0.2%
TOTAL 14,167
Turnout: 67% Diff (St): 25 Diff (US): 25


1976 President, Sioux County, IA
CandidateVotesPct
Jimmy Carter (D) 3,322 25.7%
Gerald Ford* (R) 9,448 73.0%
Eugene McCarthy (I) 90 0.7%
Other 75 0.6%
TOTAL 12,935
Turnout: 67% Diff (St): 24 Diff (US): 25


1972 President, Sioux County, IA
CandidateVotesPct
Richard Nixon* (R) 10,721 78.3%
George McGovern (D) 2,867 20.9%
John Schmitz (Amer) 82 0.6%
Other 27 0.2%
TOTAL 13,697
Turnout: 74% Diff (St): 21 Diff (US): 18


1968 President, Sioux County, IA
CandidateVotesPct
Richard Nixon (R) 10,010 80.0%
Hubert Humphrey (D) 2,181 17.4%
George Wallace (AIP) 315 2.5%
Other 1 0.0%
TOTAL 12,507
Turnout: 78% Diff (St): 27 Diff (US): 37


1964 President, Sioux County, IA
CandidateVotesPct
Lyndon Johnson* (D) 4,233 34.4%
Barry Goldwater (R) 8,078 65.6%
Other 12 0.1%
TOTAL 12,323
Turnout: 79% Diff (St): 28 Diff (US): 27


1960 President, Sioux County, IA
CandidateVotesPct
John Kennedy (D) 2,643 20.4%
Richard Nixon (R) 10,284 79.5%
Other 7 0.1%
TOTAL 12,934
Turnout: 85% Diff (St): 23 Diff (US): 30


1956 President, Sioux County, IA
CandidateVotesPct
Dwight Eisenhower* (R) 9,651 78.3%
Adlai Stevenson (D) 2,666 21.6%
Other 11 0.1%
TOTAL 12,328
Turnout: 76% Diff (St): 19 Diff (US): 21


1952 President, Sioux County, IA
CandidateVotesPct
Dwight Eisenhower (R) 10,275 83.2%
Adlai Stevenson (D) 2,050 16.6%
Other 24 0.2%
TOTAL 12,349
Turnout: 76% Diff (St): 19 Diff (US): 28


1948 President, Sioux County, IA
CandidateVotesPct
Harry Truman* (D) 4,042 41.2%
Thomas Dewey (R) 5,597 57.1%
Henry Wallace (Prog) 127 1.3%
Other 35 0.4%
TOTAL 9,801
Turnout: 60% Diff (St): 10 Diff (US): 12


1944 President, Sioux County, IA
CandidateVotesPct
Franklin Roosevelt* (D) 3,369 33.9%
Thomas Dewey (R) 6,552 65.9%
Other 19 0.2%
TOTAL 9,940
Turnout: 60% Diff (St): 14 Diff (US): 20


1940 President, Sioux County, IA
CandidateVotesPct
Franklin Roosevelt* (D) 4,144 35.3%
Wendell Willkie (R) 7,585 64.6%
Other 21 0.2%
TOTAL 11,750
Turnout: 70% Diff (St): 13 Diff (US): 20


1936 President, Sioux County, IA
CandidateVotesPct
Franklin Roosevelt* (D) 5,553 52.0%
Alf Landon (R) 4,543 42.6%
William Lemke (Union) 564 5.3%
Norman Thomas (Soc) 6 0.1%
Other 3 0.0%
TOTAL 10,669
Turnout: 67% Diff (St): 0 Diff (US): 6


1932 President, Sioux County, IA
CandidateVotesPct
Franklin Roosevelt (D) 6,170 60.5%
Herbert Hoover* (R) 3,943 38.6%
Norman Thomas (Soc) 71 0.7%
Other 18 0.2%
TOTAL 10,202
Turnout: 65% Diff (St): -1 Diff (US): -1


1928 President, Sioux County, IA
CandidateVotesPct
Herbert Hoover (R) 6,378 69.2%
Al Smith (D) 2,839 30.8%
TOTAL 9,217
Turnout: 61% Diff (St): 7 Diff (US): 11


1924 President, Sioux County, IA
CandidateVotesPct
Calvin Coolidge (R) 4,960 58.9%
John Davis (D) 900 10.7%
Robert LaFollette (Prog) 2,556 30.4%
TOTAL 8,416
Turnout: 56% Diff (St): 4 Diff (US): 5


1920 President, Sioux County, IA
CandidateVotesPct
Warren Harding (R) 6,068 79.3%
James Cox (D) 1,510 19.7%
Eugene Debs (Soc) 36 0.5%
Parley Christiansen (FL) 16 0.2%
Aaron Watkins (Proh) 17 0.2%
Other 6 0.1%
TOTAL 7,653
Turnout: 51% Diff (St): 8 Diff (US): 19


1916 President, Sioux County, IA
CandidateVotesPct
Woodrow Wilson* (D) 2,049 47.0%
Charles Evans Hughes (R) 2,261 51.9%
Allan Benson (Soc) 37 0.8%
James Hanly (Proh) 7 0.2%
Other 3 0.1%
TOTAL 4,357
Turnout: 30% Diff (St): -2 Diff (US): 6


1912 President, Sioux County, IA
CandidateVotesPct
Woodrow Wilson (D) 1,453 31.2%
Theodore Roosevelt (Prog) 2,566 55.0%
William Taft* (R) 575 12.3%
Eugene Debs (Soc) 55 1.2%
Eugene Chafin (Proh) 15 0.3%
TOTAL 4,664
Turnout: 33% Diff (St): -12 Diff (US): -11


1908 President, Sioux County, IA
CandidateVotesPct
William Taft (R) 2,697 58.1%
William J. Bryan (D) 1,891 40.7%
Eugene Debs (Soc) 22 0.5%
Eugene Chafin (Proh) 32 0.7%
TOTAL 4,642
Turnout: 35% Diff (St): 2 Diff (US): 6


1904 President, Sioux County, IA
CandidateVotesPct
Theodore Roosevelt (R) 2,992 70.8%
Alton Parker (D) 1,151 27.2%
Eugene Debs (Soc) 28 0.7%
Silas Swallow (Proh) 33 0.8%
Thomas Watson (Pop) 20 0.5%
TOTAL 4,224
Turnout: 33% Diff (St): 7 Diff (US): 14


1900 President, Sioux County, IA
CandidateVotesPct
William McKinley* (R) 3,025 61.7%
William J. Bryan (D) 1,809 36.9%
John Woolley (Proh) 52 1.1%
Eugene Debs (Soc) 7 0.1%
Other 10 0.2%
TOTAL 4,903
Turnout: 40% Diff (St): 4 Diff (US): 10
* incumbent

Historical Statewide Election Results for Sioux 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) 12,398 87.9% Michael Franken (D) 1,694 12.0% 15 [+] 0.1% 14,107 32 1.16%
2022 G 54% Kim Reynolds* (R) 12,790 90.1% Deidre DeJear (D) 1,280 9.0% 120 [+] 0.8% 14,190 32 1.16%
2020 S2 72% Joni Ernst* (R) 15,785 83.5% Theresa Greenfield (D) 2,828 15.0% 282 [+] 1.5% 18,895 32 1.13%
2018 G 58% Kim Reynolds* (R) 12,840 85.9% Fred Hubbell (D) 1,955 13.1% 147 [+] 1.0% 14,942 36 1.13%
2016 S3 70% Charles Grassley* (R) 15,902 88.7% Patty Judge (D) 1,709 9.5% 321 [+] 1.8% 17,932 29 1.16%
2014 S2 53% Joni Ernst (R) 11,611 86.9% Bruce Braley (D) 1,475 11.0% 277 [+] 2.1% 13,363 35 1.18%
2014 G 53% Terry Branstad* (R) 12,236 91.1% Jack Hatch (D) 1,013 7.5% 177 [+] 1.3% 13,426 32 1.19%
2010 S3 52% Charles Grassley* (R) 11,677 91.3% Roxanne Conlin (D) 973 7.6% 135 [+] 1.1% 12,785 27 1.15%
2010 G 52% Terry Branstad (R) 11,238 87.6% Chet Culver* (D) 1,385 10.8% 200 [+] 1.6% 12,823 35 1.14%
2008 S2 67% Christopher Reed (R) 11,945 73.6% Tom Harkin* (D) 4,291 26.4% 4 [+] 0.0% 16,240 36 1.08%
2006 G 50% Jim Nussle (R) 10,251 85.6% Chet Culver (D) 1,657 13.8% 74 [+] 0.6% 11,982 41 1.14%
2004 S3 66% Charles Grassley* (R) 14,437 92.2% Arthur Small (D) 1,166 7.4% 59 [+] 0.4% 15,662 22 1.06%
2002 S2 48% Greg Ganske (R) 9,045 80.7% Tom Harkin* (D) 2,103 18.8% 60 [+] 0.5% 11,208 37 1.10%
2002 G 48% Doug Gross (R) 9,110 81.0% Tom Vilsack* (D) 2,043 18.2% 94 [+] 0.8% 11,247 36 1.10%
1998 S3 44% Charles Grassley* (R) 9,017 90.9% David Osterberg (D) 880 8.9% 26 [+] 0.3% 9,923 22 1.05%
1998 G 44% Jim Ross Lightfoot (R) 8,302 82.9% Tom Vilsack (D) 1,651 16.5% 66 [+] 0.7% 10,019 36 1.05%
1996 S2 62% Jim Ross Lightfoot (R) 11,358 83.0% Tom Harkin* (D) 2,259 16.5% 65 [+] 0.5% 13,682 36 1.12%
1994 G 50% Terry Branstad* (R) 9,429 86.1% Bonnie Campbell (D) 1,477 13.5% 51 [+] 0.5% 10,957 29 1.10%
1992 S3 63% Charles Grassley* (R) 12,253 90.9% Jean Lloyd-Jones (D) 1,051 7.8% 179 [+] 1.3% 13,483 21 1.04%
1990 S2 51% Tom Tauke (R) 8,568 79.8% Tom Harkin* (D) 2,164 20.2% 0 0.0% 10,732 34 1.09%
1990 G 51% Terry Branstad* (R) 9,316 86.9% Donald Avenson (D) 1,381 12.9% 28 [+] 0.3% 10,725 26 1.10%
1986 S3 48% Charles Grassley* (R) 8,546 84.8% John Roehrick (D) 1,521 15.1% 13 [+] 0.1% 10,080 19 1.13%
1986 G 49% Terry Branstad* (R) 7,955 77.2% Lowell Junkins (D) 2,352 22.8% 0 0.0% 10,307 25 1.13%
1984 S2 65% Roger Jepsen* (R) 10,065 73.8% Tom Harkin (D) 3,540 26.0% 30 [+] 0.2% 13,635 30 1.05%
1982 G 44% Terry Branstad (R) 7,284 78.6% Roxanne Conlin (D) 1,962 21.2% 20 [+] 0.2% 9,266 26 0.89%
1980 S3 64% Charles Grassley (R) 10,691 78.8% John Culver* (D) 2,794 20.6% 76 [+] 0.6% 13,561 25 1.06%
1978 S2 43% Roger Jepsen (R) 6,333 74.4% Dick Clark* (D) 2,132 25.0% 46 [+] 0.5% 8,511 23 1.03%
1978 G 44% Robert Ray* (R) 6,754 78.5% Jerry Fitzgerald (D) 1,810 21.0% 37 [+] 0.4% 8,601 20 1.02%
1974 S3 54% David Stanley (R) 7,412 72.5% John Culver (D) 2,788 27.3% 25 [+] 0.2% 10,225 25 1.15%
1974 G 56% Robert Ray* (R) 8,059 76.5% James Schaben (D) 2,437 23.1% 40 [+] 0.4% 10,536 18 1.14%
1972 S2 73% Jack Miller* (R) 9,043 66.9% Dick Clark (D) 4,462 33.0% 18 [+] 0.1% 13,523 23 1.12%
1972 G 73% Robert Ray* (R) 10,232 76.1% Paul Franzenburg (D) 3,161 23.5% 53 [+] 0.4% 13,446 18 1.11%
1970 G 45% Robert Ray* (R) 5,243 68.7% Robert Fulton (D) 2,338 30.6% 49 [+] 0.6% 7,630 18 0.96%
1968 S3 77% David Stanley (R) 8,997 72.9% Harold Hughes (D) 3,338 27.1% 1 [+] 0.0% 12,336 23 1.08%
1968 G 76% Robert Ray (R) 9,431 77.4% Paul Franzenburg (D) 2,751 22.6% 0 0.0% 12,182 23 1.07%
1966 S2 64% Jack Miller* (R) 8,074 80.2% E.B. Smith (D) 1,972 19.6% 23 [+] 0.2% 10,069 19 1.17%
1966 G 64% William Murray (R) 6,815 66.7% Harold Hughes* (D) 3,384 33.1% 17 [+] 0.2% 10,216 23 1.14%
1964 G 76% Evan Hultman (R) 6,817 57.1% Harold Hughes* (D) 5,101 42.8% 11 [+] 0.1% 11,929 26 1.02%
1962 S3 56% Bourke Hickenlooper* (R) 6,485 74.9% E.B. Smith (D) 2,176 25.1% 0 0.0% 8,661 21 1.07%
1962 G 56% Norman Erbe* (R) 6,276 72.4% Harold Hughes (D) 2,392 27.6% 0 0.0% 8,668 25 1.06%
1960 S2 82% Jack Miller (R) 9,120 73.2% Herschel Loveless (D) 3,343 26.8% 0 0.0% 12,463 21 1.01%
1960 G 81% Norman Erbe (R) 9,467 76.3% Edward McManus (D) 2,939 23.7% 0 0.0% 12,406 24 1.00%
*: 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 Sioux County, IA

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

DateDistrictWinnerRunner-Up OtherTotal Votes
2022-11-08 IA04Randy Feenstra* (R) 12,665 90.0% Ryan Melton (D) 1,281 9.1% 131 0.9% 14,077
County Total for 2022-11-08:   14,077
2020-11-03 IA04Randy Feenstra (R) 16,017 85.1% J.D. Scholten (D) 2,756 14.6% 53 0.3% 18,826
County Total for 2020-11-03:   18,826
2018-11-06 IA04Steve King* (R) 10,824 73.3% J.D. Scholten (D) 3,682 24.9% 262 1.8% 14,768
County Total for 2018-11-06:   14,768
2016-11-08 IA04Steve King* (R) 14,774 83.3% Kim Weaver (D) 2,928 16.5% 27 0.2% 17,729
County Total for 2016-11-08:   17,729
2014-11-04 IA04Steve King* (R) 11,437 85.6% Jim Mowrer (D) 1,911 14.3% 19 0.1% 13,367
County Total for 2014-11-04:   13,367
2012-11-06 IA04Steve King* (R) 14,111 82.7% Christie Vilsack (D) 2,777 16.3% 173 1.0% 17,061
County Total for 2012-11-06:   17,061
2010-11-02 IA05Steve King* (R) 10,979 86.5% Matthew Campbell (D) 1,616 12.7% 100 0.8% 12,695
County Total for 2010-11-02:   12,695
2008-11-04 IA05Steve King* (R) 13,207 81.5% Rob Hubler (D) 2,752 17.0% 248 1.5% 16,207
County Total for 2008-11-04:   16,207
2006-11-07 IA05Steve King* (R) 9,648 81.4% Joyce Schulte (D) 1,198 10.1% 1,010 8.5% 11,856
County Total for 2006-11-07:   11,856
2004-11-02 IA05Steve King* (R) 13,517 88.9% Joyce Schulte (D) 1,688 11.1% 0 0.0% 15,205
County Total for 2004-11-02:   15,205
2002-11-05 IA05Steve King (R) 9,501 86.8% Paul Shomshor (D) 1,447 13.2% 1 0.0% 10,949
County Total for 2002-11-05:   10,949
2000-11-07 IA05Tom Latham* (R) 12,123 87.8% Mike Palecek (D) 1,583 11.5% 95 0.7% 13,801
County Total for 2000-11-07:   13,801
1998-11-03 IA05Tom Latham* (R) 8,772 99.9% 9 0.1% 8,781
County Total for 1998-11-03:   8,781
1996-11-05 IA05Tom Latham* (R) 11,516 86.7% MacDonald Smith (D) 1,734 13.1% 33 0.2% 13,283
County Total for 1996-11-05:   13,283
1994-11-08 IA05Tom Latham (R) 9,376 87.3% Sheila McGuire (D) 1,366 12.7% 0 0.0% 10,742
County Total for 1994-11-08:   10,742
1992-11-03 IA05Fred Grandy* (R) 12,370 99.7% 34 0.3% 12,404
County Total for 1992-11-03:   12,404
*: incumbent           sp: special election           RO: runoff election

Voter Registration Data for Sioux County, IA

YearTotalRepublicanDemocratOtherR/D EdgeR/D Edge %VAPOP %
2023 17,248 13,450 78.0% 1,266 7.3% 2,532 14.7% Rep +12,184 Rep +70.6% 66%
2022 20,979 15,450 73.6% 1,822 8.7% 3,707 17.7% Rep +13,628 Rep +65.0% 80%
2020 22,103 16,038 72.6% 2,122 9.6% 3,943 17.8% Rep +13,916 Rep +63.0% 84%
2018 21,350 15,415 72.2% 1,772 8.3% 4,163 19.5% Rep +13,643 Rep +63.9% 83%
2016 20,854 15,269 73.2% 1,716 8.2% 3,869 18.6% Rep +13,553 Rep +65.0% 82%
2014 20,145 14,486 71.9% 1,644 8.2% 4,015 19.9% Rep +12,842 Rep +63.7% 80%
2012 19,655 14,436 73.4% 1,618 8.2% 3,601 18.3% Rep +12,818 Rep +65.2% 79%
2010 19,630 14,420 73.5% 1,728 8.8% 3,482 17.7% Rep +12,692 Rep +64.7% 80%
2008 20,659 14,777 71.5% 1,941 9.4% 3,941 19.1% Rep +12,836 Rep +62.1% 85%
2006 21,100 15,457 73.3% 1,563 7.4% 4,080 19.3% Rep +13,894 Rep +65.8% 88%
2004 21,592 15,814 73.2% 1,590 7.4% 4,188 19.4% Rep +14,224 Rep +65.9% 91%
2002 20,177 14,395 71.3% 1,536 7.6% 4,246 21.0% Rep +12,859 Rep +63.7% 86%
2000 19,678 13,519 68.7% 1,648 8.4% 4,511 22.9% Rep +11,871 Rep +60.3% 86%
1994 17,531 12,800 73.0% 1,733 9.9% 2,998 17.1% Rep +11,067 Rep +63.1% 80%
1986 16,270 10,955 67.3% 1,865 11.5% 3,450 21.2% Rep +9,090 Rep +55.9% 77%
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.