| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 9,846 | 22,801 | 33,065 | |
| 2020 | R | 10,557 | 22,278 | 33,299 | |
| 2016 | R | 10,356 | 18,652 | 30,935 | |
| 2012 | R | 14,569 | 15,008 | 30,474 | |
| 2008 | R | 14,455 | 16,759 | 31,925 | |
| 2004 | R | 13,978 | 17,231 | 31,671 | |
| 2000 | R | 11,662 | 13,706 | 26,016 | |
| 1996 | D | 12,649 | 10,286 | 25,797 | |
| 1992 | R | 10,452 | 10,825 | 27,173 | |
| 1988 | R | 9,271 | 14,563 | 24,113 | |
| 1984 | R | 8,020 | 17,015 | 25,548 | |
| 1980 | R | 9,355 | 13,251 | 23,859 | |
| 1976 | R | 10,743 | 11,477 | 22,751 | |
| 1972 | R | 5,879 | 15,573 | 21,888 | |
| 1968 | R | 6,873 | 11,284 | 22,246 | |
| 1964 | D | 12,704 | 9,623 | 22,327 | |
| 1960 | R | 9,036 | 14,075 | 23,111 | |
| 1956 | R | 7,418 | 13,036 | 20,454 | |
| 1952 | R | 8,585 | 13,431 | 22,016 | |
| 1948 | R | 9,524 | 10,398 | 19,964 | |
| 1944 | R | 9,928 | 11,424 | 21,352 | |
| 1940 | D | 12,447 | 11,780 | 24,227 | |
| 1936 | D | 12,503 | 9,817 | 22,441 | |
| 1932 | D | 10,542 | 9,575 | 20,227 | |
| 1928 | R | 6,062 | 11,179 | 17,308 | |
| 1924 | R | 6,028 | 8,431 | 15,653 | |
| 1920 | R | 7,063 | 9,330 | 16,526 | |
| 1916 | D | 5,154 | 4,857 | 10,170 | |
| 1912 | D | 4,494 | 3,600 | 9,792 | |
| 1908 | R | 5,325 | 5,432 | 10,931 | |
| 1904 | R | 4,387 | 5,472 | 10,022 | |
| 1900 | R | 5,035 | 5,463 | 10,586 | |
| 1896 | R | 4,967 | 5,562 | 10,630 | |
| 1892 | R | 4,489 | 4,632 | 9,417 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Ross County's R+39.3 margin in 2024 reflects a rural-leaning electorate centered on Chillicothe, Ohio's first state capital, where deindustrialization and an aging population have reinforced a decisive Republican tilt over the past decade.
The Republican margin in Ross County reached its widest at forty-four points in 1972. The margin in 2024 was thirty-nine points, in line with the county's deep historical pattern.
Ross County's loyalty is rooted in its place. Median household income of $61,303, a 89% non-Hispanic-white share, and a population of 76,492 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 Chenango County and Hocking County.
