| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 132 | 938 | 1,076 | |
| 2020 | R | 135 | 1,010 | 1,155 | |
| 2016 | R | 128 | 983 | 1,156 | |
| 2012 | R | 188 | 873 | 1,071 | |
| 2008 | R | 250 | 839 | 1,110 | |
| 2004 | R | 228 | 911 | 1,148 | |
| 2000 | R | 265 | 931 | 1,242 | |
| 1996 | R | 372 | 778 | 1,342 | |
| 1992 | R | 353 | 744 | 1,571 | |
| 1988 | R | 480 | 967 | 1,467 | |
| 1984 | R | 308 | 1,175 | 1,496 | |
| 1980 | R | 376 | 1,261 | 1,733 | |
| 1976 | R | 792 | 1,004 | 1,821 | |
| 1972 | R | 506 | 1,419 | 1,925 | |
| 1968 | R | 437 | 1,250 | 1,934 | |
| 1964 | R | 908 | 1,100 | 2,008 | |
| 1960 | R | 768 | 1,393 | 2,161 | |
| 1956 | R | 848 | 1,414 | 2,262 | |
| 1952 | R | 757 | 1,656 | 2,413 | |
| 1948 | R | 1,035 | 1,060 | 2,095 | |
| 1944 | R | 895 | 1,456 | 2,351 | |
| 1940 | R | 1,057 | 1,734 | 2,791 | |
| 1936 | D | 1,555 | 1,290 | 2,900 | |
| 1932 | D | 2,098 | 808 | 2,957 | |
| 1928 | R | 1,143 | 1,653 | 2,815 | |
| 1924 | R | 522 | 991 | 2,638 | |
| 1920 | R | 527 | 1,482 | 2,116 | |
| 1916 | D | 852 | 809 | 1,722 | |
| 1912 | D | 651 | 281 | 1,663 | |
| 1908 | R | 891 | 954 | 1,906 | |
| 1904 | R | 328 | 1,233 | 1,916 | |
| 1900 | D | 795 | 771 | 1,625 | |
| 1896 | D | 657 | 500 | 1,204 | |
| 1892 | D | 528 | 184 | 1,188 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Boyd County's 2024 presidential margin of R+75 placed it among the most one-sided counties in the state, a pattern consistent with its sparse, ranch-dominated landscape and a population that has declined steadily for decades.
The Republican margin in Boyd County reached its widest at seventy-six points in 2020. The margin in 2024 was seventy-five points, in line with the county's deep historical pattern.
Boyd County's loyalty is rooted in its place. Median household income of $67,045, a 91% non-Hispanic-white share, and a population of 1,688 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 Golden Valley County and Harlan County.
