| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 4,644 | 13,461 | 18,314 | |
| 2020 | R | 4,842 | 13,452 | 18,651 | |
| 2016 | R | 4,358 | 11,939 | 17,670 | |
| 2012 | R | 7,266 | 10,049 | 17,904 | |
| 2008 | R | 8,174 | 9,879 | 18,396 | |
| 2004 | R | 6,481 | 12,040 | 18,639 | |
| 2000 | R | 5,454 | 9,941 | 15,919 | |
| 1996 | R | 5,524 | 7,747 | 15,598 | |
| 1992 | R | 4,862 | 7,614 | 17,464 | |
| 1988 | R | 4,666 | 10,782 | 15,585 | |
| 1984 | R | 3,624 | 10,804 | 14,578 | |
| 1980 | R | 4,015 | 9,146 | 14,221 | |
| 1976 | R | 4,920 | 7,596 | 12,762 | |
| 1972 | R | 4,278 | 9,083 | 13,605 | |
| 1968 | R | 4,456 | 8,059 | 13,485 | |
| 1964 | D | 7,547 | 5,653 | 13,200 | |
| 1960 | R | 4,044 | 10,319 | 14,363 | |
| 1956 | R | 3,225 | 9,784 | 13,009 | |
| 1952 | R | 3,358 | 9,888 | 13,246 | |
| 1948 | R | 3,662 | 6,784 | 10,470 | |
| 1944 | R | 3,417 | 8,738 | 12,155 | |
| 1940 | R | 4,065 | 9,463 | 13,528 | |
| 1936 | R | 5,628 | 7,050 | 13,302 | |
| 1932 | D | 6,860 | 5,459 | 12,597 | |
| 1928 | R | 3,136 | 8,138 | 11,332 | |
| 1924 | R | 2,795 | 5,802 | 10,285 | |
| 1920 | R | 4,183 | 7,000 | 11,336 | |
| 1916 | D | 3,552 | 3,132 | 6,873 | |
| 1912 | D | 2,875 | 1,145 | 6,416 | |
| 1908 | R | 3,329 | 3,625 | 7,130 | |
| 1904 | R | 2,565 | 3,827 | 6,608 | |
| 1900 | R | 3,049 | 3,416 | 6,607 | |
| 1896 | D | 3,530 | 3,191 | 6,766 | |
| 1892 | R | 2,583 | 2,745 | 5,870 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Tucked into Ohio's northwest corner bordering Indiana and Michigan, Williams County delivers some of the state's widest presidential margins, reflecting a broader rural consolidation pattern that has deepened consistently since 2008.
The Republican margin in Williams County reached its widest at fifty points in 1956. The margin in 2024 was forty-eight points, in line with the county's deep historical pattern.
Williams County's loyalty is rooted in its place. Median household income of $61,048, a 92% non-Hispanic-white share, and a population of 36,719 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 Fulton County and Henry County.
