| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 66,336 | 50,066 | 119,011 | |
| 2020 | D | 67,704 | 49,017 | 119,531 | |
| 2016 | D | 57,771 | 44,630 | 112,422 | |
| 2012 | D | 73,378 | 39,131 | 115,594 | |
| 2008 | D | 77,351 | 38,742 | 118,814 | |
| 2004 | D | 77,958 | 40,112 | 119,565 | |
| 2000 | D | 64,237 | 35,420 | 107,464 | |
| 1996 | D | 60,736 | 25,553 | 100,196 | |
| 1992 | D | 61,813 | 24,579 | 108,815 | |
| 1988 | D | 70,344 | 31,799 | 103,237 | |
| 1984 | D | 77,683 | 34,162 | 112,858 | |
| 1980 | D | 69,403 | 33,407 | 114,674 | |
| 1976 | D | 75,040 | 35,331 | 114,075 | |
| 1972 | D | 61,103 | 41,435 | 104,180 | |
| 1968 | D | 72,267 | 25,981 | 101,797 | |
| 1964 | D | 79,529 | 25,246 | 105,183 | |
| 1960 | D | 69,270 | 39,620 | 109,522 | |
| 1956 | D | 62,190 | 39,902 | 102,723 | |
| 1952 | D | 63,032 | 38,900 | 103,286 | |
| 1948 | D | 62,553 | 28,490 | 97,292 | |
| 1944 | D | 63,369 | 27,493 | 91,942 | |
| 1940 | D | 68,620 | 32,243 | 102,623 | |
| 1936 | D | 69,365 | 22,332 | 93,510 | |
| 1932 | D | 40,181 | 34,883 | 83,729 | |
| 1928 | R | 25,401 | 44,331 | 72,517 | |
| 1924 | R | 2,577 | 37,033 | 64,623 | |
| 1920 | R | 14,767 | 27,987 | 49,115 | |
| 1916 | D | 12,056 | 10,834 | 26,124 | |
| 1912 | D | 5,124 | 3,881 | 20,878 | |
| 1908 | R | 4,464 | 12,076 | 18,274 | |
| 1904 | R | 1,972 | 10,375 | 13,345 | |
| 1900 | R | 4,667 | 8,851 | 13,890 | |
| 1896 | R | 7,412 | 9,810 | 17,406 | |
| 1892 | D | 5,157 | 3,586 | 10,383 | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
St. Louis County spans more land area than some states, anchored by Duluth's union-heavy workforce and the Iron Range's mining communities — a demographic mix that has backed Democratic presidential candidates by double digits for decades.
The Democratic margin in St. Louis County reached its widest at fifty-two points in 1964. The margin in 2024 was fourteen points — still decisive.
St. Louis County's loyalty is rooted in its place. Median household income of $70,069, a 90% non-Hispanic-white share, and a population of 200,123 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 Douglas County and Charles City County.
