| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | D | 124,056 | 103,024 | 233,491 | |
| 2020 | D | 134,202 | 95,657 | 236,735 | |
| 2016 | D | 96,558 | 80,082 | 193,677 | |
| 2012 | D | 100,649 | 70,972 | 176,893 | |
| 2008 | D | 93,443 | 63,976 | 160,499 | |
| 2004 | D | 69,122 | 65,912 | 136,677 | |
| 2000 | D | 54,132 | 47,561 | 107,852 | |
| 1996 | D | 48,314 | 36,666 | 94,214 | |
| 1992 | D | 45,357 | 30,856 | 103,077 | |
| 1988 | D | 49,464 | 43,163 | 94,094 | |
| 1984 | R | 35,285 | 55,092 | 91,511 | |
| 1980 | R | 31,357 | 42,916 | 84,975 | |
| 1976 | D | 40,551 | 35,392 | 78,127 | |
| 1972 | R | 24,170 | 40,372 | 66,412 | |
| 1968 | D | 25,111 | 24,343 | 55,493 | |
| 1964 | D | 35,498 | 15,652 | 51,454 | |
| 1960 | D | 21,168 | 18,452 | 39,798 | |
| 1956 | R | 11,470 | 12,778 | 24,463 | |
| 1952 | R | 7,321 | 8,995 | 16,387 | |
| 1948 | D | 6,240 | 4,419 | 10,791 | |
| 1944 | R | 4,101 | 4,933 | 9,063 | |
| 1940 | R | 4,674 | 4,767 | 9,503 | |
| 1936 | D | 4,865 | 3,124 | 8,151 | |
| 1932 | D | 4,554 | 2,812 | 7,665 | |
| 1928 | R | 2,265 | 4,031 | 6,388 | |
| 1924 | R | 1,209 | 2,931 | 5,203 | |
| 1920 | R | 1,633 | 2,510 | 4,360 | |
| 1916 | D | 2,120 | 1,165 | 3,434 | |
| 1912 | D | 1,312 | 398 | 2,823 | |
| 1908 | R | 1,232 | 1,301 | 2,652 | |
| 1904 | R | 1,041 | 1,115 | 2,191 | |
| 1900 | — | — | — | — | |
| 1896 | — | — | — | — | |
| 1892 | — | — | — | — | |
| 1888 | — | — | — | — | |
| 1884 | — | — | — | — | |
| 1880 | — | — | — | — | |
| 1876 | — | — | — | — |
Adams County anchors Denver's northeastern suburbs and exurbs, where rapid Latino population growth and in-migration from the city have redrawn its electoral map over two decades, producing a D+9 margin in 2024.
The Democratic margin in Adams County reached its widest at thirty-nine points in 1964. The margin in 2024 was nine points — still decisive.
Adams County's loyalty is rooted in its place. Median household income of $94,571, a 55% non-Hispanic-white share, and a population of 530,225 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 Clay County and Glacier County.
