| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 479 | 243 | 738 | |
| 2020 | D | 476 | 244 | 746 | |
| 2016 | D | 334 | 217 | 602 | |
| 2012 | D | 389 | 236 | 654 | |
| 2008 | D | 422 | 252 | 694 | |
| 2004 | D | 373 | 311 | 701 | |
| 2000 | R | 265 | 281 | 586 | |
| 1996 | R | 258 | 264 | 614 | |
| 1992 | R | 215 | 222 | 631 | |
| 1988 | R | 230 | 306 | 552 | |
| 1984 | R | 194 | 264 | 466 | |
| 1980 | R | 133 | 254 | 461 | |
| 1976 | R | 189 | 225 | 447 | |
| 1972 | R | 195 | 366 | 576 | |
| 1968 | R | 83 | 150 | 253 | |
| 1964 | R | 91 | 124 | 215 | |
| 1960 | R | 40 | 132 | 172 | |
| 1956 | R | 29 | 114 | 143 | |
| 1952 | R | 19 | 129 | 148 | |
| 1948 | R | 25 | 106 | 138 | |
| 1944 | R | 45 | 98 | 143 | |
| 1940 | R | 62 | 125 | 188 | |
| 1936 | D | 85 | 74 | 159 | |
| 1932 | D | 56 | 53 | 112 | |
| 1928 | R | 3 | 49 | 52 | |
| 1924 | R | 5 | 52 | 59 | |
| 1920 | R | 6 | 64 | 70 | |
| 1916 | R | 23 | 60 | 83 | |
| 1912 | D | 34 | 0 | 80 | |
| 1908 | R | 11 | 75 | 86 | |
| 1904 | R | 9 | 74 | 83 | |
| 1900 | R | 15 | 69 | 84 | |
| 1896 | R | 39 | 40 | 81 | |
| 1892 | R | 17 | 65 | 86 | |
| 1888 | R | 27 | 53 | 80 | |
| 1884 | R | 36 | 56 | 92 | |
| 1880 | R | 41 | 66 | 107 | |
| 1876 | R | 65 | 110 | 175 |
Alpine County sits in the Sierra Nevada with fewer than 1,500 residents, yet it has posted Democratic presidential margins exceeding 30 points — a lopsided result driven by a small, cohesive electorate in one of the most sparsely settled jurisdictions in the continental U.S.
The Democratic margin in Alpine County reached its widest at forty-three points in 1912. The margin in 2024 was thirty-two points — still decisive.
Alpine County's loyalty is rooted in its place. Median household income of $105,521, a 61% non-Hispanic-white share, and a population of 1,616 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 Marion County and Franklin County.
