29 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 61820 | Champaign | 38,481 |
| 61821 | Champaign | 28,838 |
| 61822 | Champaign | 28,246 |
| 61801 | Urbana | 27,755 |
| 61802 | Urbana | 19,502 |
| 61853 | Mahomet | 14,645 |
| 61866 | Rantoul | 13,407 |
| 61874 | Savoy | 8,602 |
| 61873 | Saint Joseph | 5,803 |
| 61880 | Tolono | 4,558 |
| 61843 | Fisher | 2,003 |
| 61849 | Homer | 1,882 |
| 61864 | Philo | 1,714 |
| 61859 | Ogden | 1,271 |
| 61878 | Thomasboro | 1,179 |
| 61847 | Gifford | 1,160 |
| 61877 | Sidney | 1,055 |
| 61875 | Seymour | 974 |
| 61863 | Pesotum | 807 |
| 61872 | Sadorus | 613 |
| 61862 | Penfield | 602 |
| 61840 | Dewey | 572 |
| 60949 | Ludlow | 478 |
| 61816 | Broadlands | 412 |
| 61871 | Royal | 317 |
| 61815 | Bondville | 309 |
| 61851 | Ivesdale | 295 |
| 61845 | Foosland | 226 |
| 61852 | Longview | 170 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 29 ZCTAs in Champaign County, Illinois (US Census).