akashic
1876–2024
Henry County, Iowa
Henry County·Iowa

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

A rural southeast Iowa county where Republicans now routinely clear 35-point margins

18762024·38 elections
Henry County, Iowa · Billwhittaker at en.wikipedia · Wikimedia Commons
Latest
R+36
in 2024
Archetype
Republican loyalist
since the recent cycles
Population
20,004
2024 ACS
Most similar
Switzerland County
IN · similarity 0.99
9 precincts · 9,600 votes cast
Trump · R+36
Margin
Turnout
Harris +50
Trump +50
Real precinct boundaries. Hover for vote totals.
YearWonMarginDemocraticRepublicanTotal
2024R
−35.9%
2,9956,4399,600
2020R
−32.4%
3,2756,5079,982
2016R
−30.3%
2,9045,7799,500
2012R
−5.9%
4,4605,0359,697
2008R
−5.0%
4,3494,8229,377
2004R
−11.6%
4,1275,2209,457
2000R
−6.6%
3,9074,4768,671
1996D
+3.9%
3,7983,4788,275
1992D
+1.3%
3,5443,4358,628
1988R
−2.5%
3,7543,9517,758
1984R
−14.3%
3,3774,5167,955
1980R
−13.2%
3,3174,4308,462
1976D
+0.4%
3,8823,8487,887
1972R
−29.7%
2,7215,0667,884
1968R
−27.2%
2,5324,6137,659
1964D
+13.0%
4,2233,2477,482
1960R
−32.1%
2,8395,5318,377
1956R
−37.1%
2,6675,8188,495
1952R
−44.6%
2,4386,4248,931
1948R
−20.2%
3,0424,6207,805
1944R
−30.8%
2,7415,2087,998
1940R
−34.9%
2,8375,8938,749
1936R
−11.3%
3,5424,4808,271
1932D
+13.9%
4,5183,3988,074
1928R
−42.7%
2,0535,1607,278
1924R
−43.8%
1,3444,5367,296
1920R
−45.4%
1,9395,2547,306
1916R
−17.4%
1,7282,4704,259
1912R
−2.0%
1,5801,6634,251
1908R
−24.0%
1,6062,6534,356
1904R
−33.8%
1,2592,6474,106
1900R
−18.3%
1,9072,7944,847
1896R
−13.7%
2,0922,7744,969
1892R
−15.5%
1,7102,3904,382
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%
African American
2.0%
Multiple ancestry combinations reported; no single grouping above 1%.
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.
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
Mainline Protestant
12.1%
Methodist
8.9%
Other Christian
7.2%
Catholic & Orthodox
4.0%
Baptist
0.8%
Pentecostal & Holiness
0.3%
Source · 2020 US Religion Census. Remaining 66.7% of residents not counted as adherents by any reporting body.

Henry County's blend of small manufacturing towns and agricultural land has tracked a steady rightward shift over two decades, with 2024's R+35.9 margin reflecting a pattern consistent across Iowa's non-metro southeast corridor.

The Republican margin in Henry County reached its widest at forty-five points in 1920. The margin in 2024 was thirty-six points, in line with the county's deep historical pattern.

Henry County's loyalty is rooted in its place. Median household income of $67,436, a 88% non-Hispanic-white share, and a population of 20,004 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 Switzerland County and Todd County.