| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 5,208 | 15,033 | 20,660 | |
| 2020 | R | 5,544 | 15,043 | 21,030 | |
| 2016 | R | 5,124 | 13,895 | 20,290 | |
| 2012 | R | 7,613 | 10,838 | 19,007 | |
| 2008 | R | 10,059 | 10,896 | 21,319 | |
| 2004 | R | 7,176 | 13,137 | 20,504 | |
| 2000 | R | 7,647 | 10,321 | 18,315 | |
| 1996 | R | 7,667 | 8,537 | 18,691 | |
| 1992 | R | 6,794 | 8,720 | 19,989 | |
| 1988 | R | 7,779 | 11,280 | 19,116 | |
| 1984 | R | 7,064 | 11,926 | 19,062 | |
| 1980 | R | 7,626 | 12,724 | 21,196 | |
| 1976 | R | 10,137 | 11,620 | 21,848 | |
| 1972 | R | 5,610 | 14,538 | 20,208 | |
| 1968 | R | 8,045 | 11,626 | 22,097 | |
| 1964 | D | 12,374 | 10,184 | 22,697 | |
| 1960 | R | 9,629 | 13,752 | 23,530 | |
| 1956 | R | 8,502 | 13,750 | 22,418 | |
| 1952 | R | 8,378 | 14,184 | 22,882 | |
| 1948 | R | 8,523 | 10,487 | 19,421 | |
| 1944 | R | 8,297 | 10,583 | 19,296 | |
| 1940 | R | 9,623 | 11,051 | 20,858 | |
| 1936 | D | 10,172 | 9,099 | 19,420 | |
| 1932 | R | 8,255 | 8,430 | 17,319 | |
| 1928 | R | 4,554 | 10,502 | 15,324 | |
| 1924 | R | 5,376 | 8,800 | 14,461 | |
| 1920 | R | 5,824 | 8,742 | 15,328 | |
| 1916 | R | 3,560 | 4,386 | 8,771 | |
| 1912 | D | 2,687 | 2,479 | 7,717 | |
| 1908 | R | 3,197 | 4,358 | 7,978 | |
| 1904 | R | 2,482 | 4,391 | 7,319 | |
| 1900 | R | 2,754 | 4,047 | 7,135 | |
| 1896 | R | 2,980 | 4,001 | 7,090 | |
| 1892 | R | 1,871 | 3,336 | 6,061 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Henry County delivered a 47.7-point Republican margin in the 2024 presidential race, placing it among Indiana's most one-sided counties. Its economy centers on manufacturing and agriculture across the flat farmland east of Indianapolis.
The Republican margin in Henry County reached its widest at forty-eight points in 2024. The margin in 2024 was forty-eight points, in line with the county's deep historical pattern.
Henry County's loyalty is rooted in its place. Median household income of $63,150, a 93% non-Hispanic-white share, and a population of 48,970 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 Jennings County and Jay County.
