| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 61,405 | 27,844 | 92,621 | |
| 2020 | D | 67,598 | 27,292 | 97,294 | |
| 2016 | D | 54,752 | 20,739 | 82,090 | |
| 2012 | D | 48,715 | 23,368 | 74,671 | |
| 2008 | D | 53,488 | 24,592 | 79,749 | |
| 2004 | D | 42,885 | 28,005 | 72,269 | |
| 2000 | D | 33,747 | 23,057 | 61,436 | |
| 1996 | D | 33,033 | 18,807 | 58,079 | |
| 1992 | D | 33,297 | 17,574 | 62,436 | |
| 1988 | D | 30,429 | 22,358 | 53,372 | |
| 1984 | D | 25,879 | 24,329 | 50,853 | |
| 1980 | D | 21,527 | 19,603 | 49,690 | |
| 1976 | D | 23,533 | 18,376 | 43,317 | |
| 1972 | D | 23,694 | 17,969 | 42,738 | |
| 1968 | D | 15,833 | 11,123 | 28,960 | |
| 1964 | D | 18,266 | 7,976 | 26,274 | |
| 1960 | D | 12,395 | 10,104 | 22,589 | |
| 1956 | D | 10,075 | 9,347 | 19,479 | |
| 1952 | R | 7,895 | 8,967 | 16,999 | |
| 1948 | D | 6,655 | 5,560 | 12,684 | |
| 1944 | D | 5,837 | 4,233 | 10,116 | |
| 1940 | D | 6,380 | 4,373 | 10,854 | |
| 1936 | D | 5,992 | 2,594 | 8,692 | |
| 1932 | D | 5,780 | 2,515 | 8,529 | |
| 1928 | R | 2,641 | 3,545 | 6,224 | |
| 1924 | R | 797 | 2,470 | 5,447 | |
| 1920 | R | 1,787 | 3,375 | 5,448 | |
| 1916 | D | 2,922 | 2,334 | 5,501 | |
| 1912 | D | 2,239 | 0 | 3,994 | |
| 1908 | R | 1,553 | 1,707 | 3,483 | |
| 1904 | R | 1,301 | 1,702 | 3,281 | |
| 1900 | D | 1,687 | 1,510 | 3,296 | |
| 1896 | D | 1,753 | 1,485 | 3,312 | |
| 1892 | D | 1,707 | 1,372 | 3,364 | |
| 1888 | D | 1,580 | 1,350 | 3,023 | |
| 1884 | D | 1,421 | 1,412 | 2,897 | |
| 1880 | D | 1,374 | 1,256 | 2,651 | |
| 1876 | D | 1,360 | 1,233 | 2,593 |
Home to the University of California, Davis, Yolo County combines a large student and academic population with Sacramento-adjacent suburbs, producing presidential margins that have exceeded D+30 in every cycle since 2008.
The Democratic margin in Yolo County reached its widest at fifty-six points in 1912. The margin in 2024 was thirty-six points — still decisive.
Yolo County's loyalty is rooted in its place. Median household income of $91,752, a 49% non-Hispanic-white share, and a population of 220,564 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 Tompkins County and Denver County.
