Carroll County, Iowa

2024 results by precinct

13 precincts · 11,140 votes cast

Trump · R+42

Harris +50

Trump +50

Real precinct boundaries. Hover for vote totals.

38 presidential elections

Year	Won	Margin	Democratic	Republican	Total
2024	R	−41.8%	3,153	7,814	11,140
2020	R	−37.8%	3,454	7,737	11,335
2016	R	−31.2%	3,309	6,638	10,682
2012	R	−6.1%	4,947	5,601	10,674
2008	D	+3.7%	5,302	4,922	10,387
2004	R	−10.2%	4,689	5,762	10,524
2000	R	−4.3%	4,463	4,879	9,568
1996	D	+10.7%	4,333	3,392	8,790
1992	D	+3.8%	3,800	3,439	9,475
1988	D	+18.7%	5,437	3,701	9,273
1984	R	−0.6%	4,960	5,021	10,077
1980	R	−11.6%	3,885	5,017	9,737
1976	D	+12.9%	5,333	4,094	9,608
1972	D	+2.1%	4,608	4,415	9,285
1968	D	+9.6%	4,809	3,927	9,202
1964	D	+53.1%	7,807	2,387	10,207
1960	D	+20.6%	7,064	4,648	11,721
1956	R	−6.7%	5,085	5,816	10,913
1952	R	−28.7%	4,139	7,473	11,628
1948	D	+17.7%	5,711	3,974	9,786
1944	R	−0.4%	4,799	4,833	9,659
1940	D	+1.4%	5,526	5,376	10,923
1936	D	+28.8%	6,285	3,259	10,503
1932	D	+51.7%	7,174	2,265	9,499
1928	D	+20.8%	6,134	4,014	10,169
1924	R	−18.3%	1,994	3,590	8,744
1920	R	−47.8%	2,174	6,320	8,671
1916	R	−7.1%	2,085	2,408	4,535
1912	D	+38.8%	2,326	664	4,282
1908	D	+14.5%	2,510	1,865	4,448
1904	R	−5.6%	2,040	2,290	4,471
1900	D	+4.5%	2,434	2,224	4,698
1896	D	+7.8%	2,417	2,066	4,524
1892	D	+19.2%	2,375	1,592	4,082
1888	—	No data	—	—	—
1884	—	No data	—	—	—
1880	—	No data	—	—	—
1876	—	No data	—	—	—

Demographics

Race, ethnicity, and ancestry

Click any group to see the ancestries typically reported within it.

American

100.0%

Sample size too small to break out by ancestry reliably.

Multiple ancestry combinations reported; no single grouping above 1%.

Sample size too small to break out by ancestry reliably.

American Indian, Alaska Native, Native Hawaiian, and Pacific Islander combined.

Source · American Community Survey 5-year estimates, 2024 release. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.

Age distribution by sex

Median age: 41.1 in this county, 39.1 nationally

Male

Age

Female

1.3%

85+

2.3%

2.4%

75–84

3.5%

5.7%

65–74

6.1%

7.0%

55–64

7.0%

5.6%

45–54

5.0%

5.7%

35–44

5.5%

5.7%

25–34

5.6%

3.9%

18–24

3.6%

9.6%

5–17

8.8%

3.3%

2.7%

Source · American Community Survey 5-year estimates, 2024 release.

Median household income

2024 inflation-adjusted dollars

$72,930

Carroll County ranks near the middle of US counties.

Carroll County$72,930

Iowa$75,059

United States$80,734

Source · American Community Survey 5-year estimates, 2024 release.

Poverty rate

All persons below federal poverty line

7.9%

Children face moderate poverty.

Children under 1818.0%

Working age (18–64)100.0%

Seniors (65+)18.0%

Source · American Community Survey 5-year estimates, 2024 release.

Language at home

Population aged 5 and older

0.0%

speak English only

Source · ACS 5-year estimates, 2024.

Religious adherents

Adherents per capita by tradition

Catholic & Orthodox

46.8%

Other Christian

13.8%

Mainline Protestant

12.6%

Methodist

7.8%

Pentecostal & Holiness

1.0%

Source · 2020 US Religion Census. Remaining 18.0% of residents not counted as adherents by any reporting body.

Carroll County's farming communities have shifted decisively Republican over the past decade, with the 2024 presidential margin exceeding 40 points — a pattern consistent with broader rural Iowa realignment away from its historically competitive roots.

The Republican margin in Carroll County reached its widest at forty-eight points in 1920. The margin in 2024 was forty-two points, in line with the county's deep historical pattern.

Carroll County's loyalty is rooted in its place. Median household income of $72,930, a 93% non-Hispanic-white share, and a population of 20,594 together describe a community whose political habits are deeply settled. The county's voting pattern over the last decade is most similar to that of Hardin County and Audubon County.

Most similar counties

Carroll County has voted Republican for as long as anyone can remember.