| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| 2024 | R | 39,328 | 43,688 | 85,120 | |
| 2020 | D | 43,772 | 42,252 | 88,299 | |
| 2016 | R | 35,875 | 36,265 | 78,646 | |
| 2012 | D | 42,551 | 31,894 | 76,419 | |
| 2008 | D | 41,097 | 30,257 | 72,427 | |
| 2004 | D | 35,369 | 31,117 | 67,187 | |
| 2000 | D | 28,888 | 22,827 | 53,946 | |
| 1996 | D | 28,791 | 17,402 | 50,301 | |
| 1992 | D | 30,261 | 16,120 | 56,438 | |
| 1988 | D | 32,788 | 20,119 | 53,318 | |
| 1984 | D | 27,126 | 24,634 | 52,200 | |
| 1980 | D | 21,874 | 20,770 | 46,441 | |
| 1976 | D | 25,841 | 18,518 | 45,143 | |
| 1972 | R | 19,620 | 25,607 | 47,045 | |
| 1968 | D | 27,215 | 16,646 | 48,291 | |
| 1964 | D | 34,933 | 13,103 | 48,536 | |
| 1960 | D | 27,421 | 20,579 | 48,582 | |
| 1956 | R | 20,433 | 23,454 | 44,814 | |
| 1952 | D | 20,613 | 20,333 | 41,659 | |
| 1948 | D | 21,637 | 12,756 | 35,041 | |
| 1944 | D | 19,039 | 13,848 | 32,983 | |
| 1940 | D | 18,805 | 14,185 | 33,115 | |
| 1936 | D | 18,660 | 10,071 | 29,224 | |
| 1932 | D | 15,325 | 10,414 | 26,354 | |
| 1928 | R | 7,881 | 15,541 | 23,673 | |
| 1924 | R | 4,917 | 10,577 | 20,009 | |
| 1920 | R | 7,863 | 9,621 | 18,109 | |
| 1916 | D | 10,710 | 6,545 | 18,141 | |
| 1912 | D | 7,643 | 3,050 | 15,533 | |
| 1908 | D | 8,092 | 7,337 | 15,937 | |
| 1904 | R | 6,966 | 9,173 | 16,463 | |
| 1900 | R | 5,878 | 6,028 | 12,164 | |
| 1896 | D | 8,373 | 1,318 | 9,806 | |
| 1892 | R | 0 | 2,404 | 5,219 | |
| 1888 | R | 2,038 | 2,280 | 4,458 | |
| 1884 | R | 1,449 | 1,784 | 3,311 | |
| 1880 | D | 860 | 824 | 1,684 | |
| 1876 | — | — | — | — |
Pueblo County's identity is rooted in its steelmaking past and union-household demographics, yet it shifted five points toward the Republican column in 2024 — continuing a years-long realignment among working-class Latino and industrial voters along the Arkansas River corridor.
The Democratic margin in Pueblo County has rarely exceeded seventy-two points in modern history; the Republican margin has rarely exceeded forty-six points. 2024 delivered the county to the Republican candidate by five points.
Pueblo County's demographics resemble the country more than they resemble most counties. A 72% non-Hispanic-white share, a 15% poverty rate, and a median household income of $64,010 — all within the broad national range. The county's voting pattern over the last decade is most similar to that of Deer Lodge County and Pacific County.
