29 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 61820 | Champaign | 40,599 |
| 61821 | Champaign | 28,611 |
| 61801 | Urbana | 27,891 |
| 61822 | Champaign | 27,642 |
| 61802 | Urbana | 20,293 |
| 61853 | Mahomet | 14,831 |
| 61866 | Rantoul | 13,470 |
| 61874 | Savoy | 8,811 |
| 61873 | Saint Joseph | 5,779 |
| 61880 | Tolono | 4,367 |
| 61864 | Philo | 2,003 |
| 61849 | Homer | 1,961 |
| 61843 | Fisher | 1,934 |
| 61859 | Ogden | 1,227 |
| 61847 | Gifford | 1,144 |
| 61878 | Thomasboro | 1,127 |
| 61877 | Sidney | 1,106 |
| 61875 | Seymour | 846 |
| 61863 | Pesotum | 844 |
| 61872 | Sadorus | 620 |
| 61840 | Dewey | 612 |
| 61862 | Penfield | 581 |
| 60949 | Ludlow | 564 |
| 61816 | Broadlands | 377 |
| 61815 | Bondville | 335 |
| 61871 | Royal | 296 |
| 61851 | Ivesdale | 279 |
| 61845 | Foosland | 233 |
| 61852 | Longview | 172 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 29 ZCTAs in Champaign County, Illinois (US Census).