| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 443 | 3,805 | 4,344 | |
| 2020 | R | 378 | 3,651 | 4,119 | |
| 2016 | R | 273 | 3,348 | 3,826 | |
| 2012 | R | 426 | 3,109 | 3,685 | |
| 2008 | R | 612 | 2,967 | 3,683 | |
| 2004 | R | 501 | 2,836 | 3,396 | |
| 2000 | R | 361 | 2,289 | 2,738 | |
| 1996 | R | 651 | 1,698 | 2,787 | |
| 1992 | R | 568 | 1,377 | 2,683 | |
| 1988 | R | 553 | 1,939 | 2,540 | |
| 1984 | R | 450 | 2,286 | 2,754 | |
| 1980 | R | 413 | 1,909 | 2,416 | |
| 1976 | R | 653 | 1,438 | 2,139 | |
| 1972 | R | 339 | 1,760 | 2,110 | |
| 1968 | R | 318 | 1,240 | 1,733 | |
| 1964 | R | 780 | 1,214 | 1,994 | |
| 1960 | R | 573 | 1,537 | 2,110 | |
| 1956 | R | 426 | 1,139 | 1,565 | |
| 1952 | R | 423 | 1,734 | 2,173 | |
| 1948 | R | 712 | 1,166 | 1,892 | |
| 1944 | R | 690 | 1,244 | 1,934 | |
| 1940 | R | 869 | 1,359 | 2,233 | |
| 1936 | R | 1,088 | 1,218 | 2,350 | |
| 1932 | D | 1,317 | 1,062 | 2,413 | |
| 1928 | R | 582 | 1,466 | 2,053 | |
| 1924 | R | 349 | 978 | 1,795 | |
| 1920 | R | 451 | 934 | 1,389 | |
| 1916 | D | 1,181 | 846 | 2,087 | |
| 1912 | D | 726 | 505 | 1,872 | |
| 1908 | R | 799 | 1,068 | 1,961 | |
| 1904 | R | 475 | 984 | 1,531 | |
| 1900 | R | 531 | 692 | 1,223 | |
| 1896 | D | 569 | 524 | 1,099 | |
| 1892 | R | 0 | 399 | 934 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Crook County, tucked into Wyoming's northeast corner along the Black Hills, recorded an R+77.4 presidential margin in 2024—among the widest in the country—reflecting a sparse, ranching-dominated electorate with virtually no urban counterweight.
The Republican margin in Crook County reached its widest at eighty points in 2016. The margin in 2024 was seventy-seven points, in line with the county's deep historical pattern.
Crook County's loyalty is rooted in its place. Median household income of $79,637, a 93% non-Hispanic-white share, and a population of 7,455 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 Washington County and Brown County.
