United States presidential election in Colorado, 2004 By county By county

| County | Kerry__1 | Kerry__2 | Bush__3 | Bush__4 | Others__5 | Others__6 |
|---|---|---|---|---|---|---|
| Adams | 50.6% | 69122 | 48.2% | 65912 | 1.2% | 1643 |
| Alamosa | 48.0% | 3017 | 50.6% | 3179 | 1.3% | 83 |
| Arapahoe | 47.5% | 110262 | 51.4% | 119475 | 1.1% | 2628 |
| Archuleta | 36.7% | 2141 | 61.7% | 3601 | 1.7% | 97 |
| Baca | 22.1% | 483 | 76.9% | 1680 | 1.1% | 23 |
| Bent | 36.4% | 785 | 62.1% | 1338 | 1.5% | 32 |
| Boulder | 66.3% | 105564 | 32.4% | 51586 | 1.3% | 2109 |
| Broomfield | 47.1% | 10935 | 51.7% | 12007 | 1.3% | 293 |
| Chaffee | 42.9% | 3766 | 55.6% | 4875 | 1.5% | 129 |
| Cheyenne | 17.5% | 198 | 81.4% | 923 | 1.1% | 13 |
| Clear Creek | 53.3% | 2989 | 44.9% | 2522 | 1.8% | 102 |
| Conejos | 49.8% | 1894 | 49.0% | 1864 | 1.2% | 45 |
| Costilla | 66.5% | 1170 | 32.2% | 566 | 1.4% | 24 |
| Crowley | 32.0% | 478 | 67.4% | 1006 | 0.6% | 9 |