| ZIP Codes: | 33 ZIP Codes (27 Standard, 6 PO Box, 0 Unique) [See All] |
| Area Codes: | 217 / 447 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:59 PM |
| Population: | 208,555 [See All] |
| FIPS: | 17019 |
| CBSA: | Champaign-Urbana, IL |
| Land Area: | 1,020 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 40.1272, -88.2032 |
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208,555 residents live across 33 ZIPs covering 1,020 sq mi, served by 26 distinct USPS-recognized cities.
Population moved from 204,409 to 208,555 from 2014 to 2024 — a +2.0% change. 13 ZIPs gained residents, 16 lost.
The county's wealthiest ZIP 61873 (Saint Joseph, $117,578 median) and poorest ZIP 61820 (Champaign, $27,539) are 10.9 miles apart — a 4.3× income gap across local geography.
Median home values vary 2.7× across this county — from $118,700 in 61878 (Thomasboro) to $316,300 in 61874 (Savoy).
Density varies 192× across the county — from 34 people/sq mi in 61849 (Homer) to 6,505 in 61820 (Champaign).
Educational attainment ranges from 12.7% bachelor's+ in 61866 (Rantoul) to 62.8% in 61874 (Savoy) — the breadth of educational profiles across the area.
Within Illinois, this is the #10 most populous of 102 counties and ranks #17 for median household income .
Weighted by population, the typical household earns about $66,660 across the county — reflecting what a typical resident sees, not a simple ZIP average.
46.2% of adults age 25+ hold a bachelor's degree or higher (56,032 of 121,269 reporting).
27 Standard delivery, 6 PO Box only, 0 single-entity Unique ZIPs serve this county.
2 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
Median household income spans 4.3× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 61820 | Champaign | Standard | 40,599 | $27,539 | 6.2 | 12.5% |
| 61821 | Champaign | Standard | 28,611 | $70,715 | 8.0 | -7.0% |
| 61801 | Urbana | Standard | 27,891 | $36,180 | 5.4 | -10.9% |
| 61822 | Champaign | Standard | 27,642 | $99,006 | 109.3 | 17.2% |
| 61802 | Urbana | Standard | 20,293 | $61,620 | 86.8 | 6.3% |
| 61853 | Mahomet | Standard | 14,831 | $115,512 | 46.7 | 10.2% |
| 61866 | Rantoul | Standard | 13,470 | $50,686 | 80.5 | -5.1% |
| 61874 | Savoy | Standard | 8,811 | $91,667 | 5.6 | 17.4% |
| 61873 | Saint Joseph | Standard | 5,779 | $117,578 | 66.4 | -8.9% |
| 61880 | Tolono | Standard | 4,367 | $85,536 | 61.7 | 8.4% |
| 61864 | Philo | Standard | 2,003 | $110,139 | 23.7 | 8.0% |
| 61849 | Homer | Standard | 1,961 | $86,250 | 57.8 | 13.1% |
| 61843 | Fisher | Standard | 1,934 | $97,943 | 39.2 | -12.5% |
| 61859 | Ogden | Standard | 1,227 | $102,708 | 29.7 | -4.8% |
| 61847 | Gifford | Standard | 1,144 | $92,344 | 31.0 | -8.5% |
| 61878 | Thomasboro | Standard | 1,127 | $66,250 | 25.3 | -21.3% |
| 61877 | Sidney | Standard | 1,106 | $96,750 | 28.3 | -37.6% |
| 61875 | Seymour | Standard | 846 | $118,929 | 28.2 | 23.9% |
| 61863 | Pesotum | Standard | 844 | $78,125 | 32.8 | 24.7% |
| 61872 | Sadorus | Standard | 620 | $117,821 | 33.7 | -43.2% |
| 61840 | Dewey | Standard | 612 | $84,891 | 30.7 | -27.7% |
| 61862 | Penfield | Standard | 581 | $114,250 | 40.3 | 24.9% |
| 60949 | Ludlow | Standard | 564 | $60,750 | 26.7 | -16.8% |
| 61816 | Broadlands | Standard | 377 | $70,833 | 29.0 | -26.4% |
| 61815 | Bondville | PO Box | 335 | $72,031 | 0.2 | 32.4% |
| 61871 | Royal | PO Box | 296 | $78,750 | 0.6 | 16.5% |
| 61851 | Ivesdale | Standard | 279 | $59,167 | 32.3 | -13.9% |
| 61845 | Foosland | Standard | 233 | $91,389 | 34.9 | -48.2% |
| 61852 | Longview | Standard | 172 | — | 18.6 | -40.5% |
| 61803 | Urbana | PO Box | — | — | 0.0 | — |
| 61824 | Champaign | PO Box | — | — | 0.0 | — |
| 61825 | Champaign | PO Box | — | — | 0.0 | — |
| 61826 | Champaign | PO Box | — | — | 0.1 | — |