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

| County | Kerry__1 | Kerry__2 | Bush__3 | Bush__4 | Others__5 | Others__6 |
|---|---|---|---|---|---|---|
| Kane | 44.2% | 75922 | 55.0% | 94359 | 0.8% | 1434 |
| Kankakee | 44.4% | 20003 | 54.9% | 24739 | 0.7% | 294 |
| Kendall | 38.2% | 12374 | 61.0% | 19774 | 0.8% | 254 |
| Knox | 54.2% | 13403 | 45.0% | 11111 | 0.8% | 194 |
| Lake | 48.8% | 134352 | 50.5% | 139081 | 0.7% | 1862 |
| LaSalle | 47.8% | 24263 | 51.5% | 26101 | 0.7% | 365 |
| Lawrence | 37.4% | 2518 | 61.9% | 4162 | 0.7% | 49 |
| Lee | 40.4% | 6416 | 58.6% | 9307 | 1.0% | 153 |
| Livingston | 35.1% | 5632 | 64.3% | 10316 | 0.6% | 91 |
| Logan | 31.7% | 4273 | 67.7% | 9112 | 0.6% | 82 |
| McDonough | 47.7% | 7119 | 51.3% | 7656 | 1.0% | 154 |
| McHenry | 39.3% | 50330 | 59.7% | 76412 | 0.9% | 1206 |
| McLean | 41.7% | 29877 | 57.6% | 41276 | 0.7% | 467 |
| Macon | 45.1% | 23341 | 54.3% | 28118 | 0.6% | 287 |
| Macoupin | 49.1% | 11193 | 50.1% | 11413 | 0.8% | 179 |