| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,909 | 5,597 | 7,736 | |
| 2020 | R | 2,136 | 5,705 | 8,035 | |
| 2016 | R | 1,753 | 4,826 | 7,153 | |
| 2012 | R | 2,268 | 4,427 | 6,906 | |
| 2008 | R | 2,534 | 4,820 | 7,544 | |
| 2004 | R | 2,537 | 4,800 | 7,463 | |
| 2000 | R | 2,530 | 3,770 | 6,613 | |
| 1996 | R | 2,502 | 3,487 | 7,146 | |
| 1992 | R | 2,297 | 2,561 | 7,421 | |
| 1988 | R | 2,840 | 3,496 | 6,435 | |
| 1984 | R | 2,072 | 4,288 | 6,443 | |
| 1980 | R | 2,088 | 3,817 | 6,324 | |
| 1976 | R | 2,755 | 2,945 | 5,828 | |
| 1972 | R | 1,522 | 4,073 | 5,728 | |
| 1968 | R | 1,664 | 3,157 | 5,622 | |
| 1964 | D | 2,737 | 2,681 | 5,460 | |
| 1960 | R | 2,150 | 3,880 | 6,061 | |
| 1956 | R | 1,979 | 4,136 | 6,147 | |
| 1952 | R | 2,036 | 4,589 | 6,666 | |
| 1948 | R | 2,659 | 3,474 | 6,254 | |
| 1944 | R | 2,212 | 4,107 | 6,377 | |
| 1940 | R | 3,186 | 4,991 | 8,247 | |
| 1936 | R | 4,224 | 4,232 | 8,486 | |
| 1932 | D | 4,199 | 3,707 | 8,165 | |
| 1928 | R | 2,058 | 5,900 | 8,056 | |
| 1924 | R | 2,050 | 4,957 | 7,843 | |
| 1920 | R | 2,414 | 4,507 | 7,177 | |
| 1916 | D | 4,276 | 3,770 | 8,436 | |
| 1912 | D | 1,969 | 850 | 4,824 | |
| 1908 | R | 2,288 | 2,671 | 5,310 | |
| 1904 | R | 1,516 | 3,670 | 5,645 | |
| 1900 | R | 2,901 | 3,128 | 6,114 | |
| 1896 | D | 3,481 | 2,903 | 6,455 | |
| 1892 | R | 0 | 3,170 | 5,949 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Osage County sits at the eastern edge of the Flint Hills, where a predominantly rural, agriculture-rooted population has produced Republican presidential margins above 45 points in each of the last several cycles.
The Republican margin in Osage County reached its widest at fifty-three points in 1892. The margin in 2024 was forty-eight points, in line with the county's deep historical pattern.
Osage County's loyalty is rooted in its place. Median household income of $74,467, a 93% non-Hispanic-white share, and a population of 15,744 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 Jackson County and Woodson County.
