| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 1,009 | 6,657 | 7,745 | |
| 2020 | R | 1,037 | 6,425 | 7,546 | |
| 2016 | R | 998 | 5,856 | 7,090 | |
| 2012 | R | 1,473 | 5,329 | 6,919 | |
| 2008 | R | 1,907 | 5,062 | 7,079 | |
| 2004 | R | 1,673 | 4,975 | 6,671 | |
| 2000 | R | 1,938 | 4,154 | 6,178 | |
| 1996 | R | 2,045 | 2,890 | 5,568 | |
| 1992 | R | 1,860 | 2,784 | 6,073 | |
| 1988 | R | 1,771 | 3,885 | 5,665 | |
| 1984 | R | 1,343 | 4,381 | 5,724 | |
| 1980 | R | 2,045 | 3,679 | 5,822 | |
| 1976 | R | 2,015 | 3,224 | 5,269 | |
| 1972 | R | 1,485 | 4,266 | 5,751 | |
| 1968 | R | 1,540 | 3,107 | 5,041 | |
| 1964 | R | 2,608 | 2,712 | 5,320 | |
| 1960 | D | 2,900 | 2,678 | 5,578 | |
| 1956 | R | 2,445 | 3,077 | 5,522 | |
| 1952 | R | 2,191 | 3,404 | 5,605 | |
| 1948 | D | 2,672 | 2,488 | 5,170 | |
| 1944 | R | 2,121 | 3,284 | 5,412 | |
| 1940 | R | 2,332 | 3,743 | 6,086 | |
| 1936 | D | 2,995 | 2,836 | 5,899 | |
| 1932 | D | 3,567 | 1,798 | 5,387 | |
| 1928 | D | 3,092 | 2,474 | 5,572 | |
| 1924 | R | 1,986 | 2,496 | 4,802 | |
| 1920 | R | 1,118 | 3,699 | 4,856 | |
| 1916 | R | 1,383 | 1,769 | 3,184 | |
| 1912 | D | 1,394 | 981 | 2,923 | |
| 1908 | R | 1,439 | 1,820 | 3,295 | |
| 1904 | R | 1,451 | 1,699 | 3,224 | |
| 1900 | R | 1,396 | 1,731 | 3,189 | |
| 1896 | R | 1,456 | 1,700 | 3,192 | |
| 1892 | R | 1,266 | 1,378 | 2,690 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Osage County, anchored by small farming communities along the Osage River, recorded an R+73.1 presidential margin in 2024—among the widest in the state—reflecting the heavily rural, agricultural character that defines its electorate.
The Republican margin in Osage County reached its widest at seventy-three points in 2024. The margin in 2024 was seventy-three points, in line with the county's deep historical pattern.
Osage County's loyalty is rooted in its place. Median household income of $76,681, a 98% non-Hispanic-white share, and a population of 13,402 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 Taney County and Miller County.
