| ZIP Codes: | 10 ZIP Codes (9 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Codes: | 217 / 447 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:53:20 PM |
| Population: | 16,035 [See All] |
| FIPS: | 17147 |
| CBSA: | Champaign-Urbana, IL |
| Land Area: | 416 sq mi |
| Water Area: | 0 sq mi |
| Coordinates: | 39.9807, -88.6224 |
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16,035 residents live across 10 ZIPs covering 416 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 15,827 to 16,035 from 2014 to 2024 — a +1.3% change. 4 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 61884 (White Heath, $106,250 median) and poorest ZIP 61839 (De Land, $56,389) are 8.2 miles apart — a 1.9× income gap across local geography.
Median home values vary 3.0× across this county — from $86,800 in 61936 (La Place) to $258,300 in 61884 (White Heath).
Density varies 14× across the county — from 15 people/sq mi in 61839 (De Land) to 212 in 61936 (La Place).
Educational attainment ranges from 9.9% bachelor's+ in 61839 (De Land) to 46.7% in 61884 (White Heath) — the breadth of educational profiles across the area.
Within Illinois, this is the #65 most populous of 102 counties and ranks #18 for median household income .
Weighted by population, the typical household earns about $94,073 across the county — reflecting what a typical resident sees, not a simple ZIP average.
33.6% of adults age 25+ hold a bachelor's degree or higher (3,891 of 11,568 reporting).
9 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 61856 | Monticello | Standard | 8,226 | $103,559 | 100.5 | 12.0% |
| 61813 | Bement | Standard | 2,043 | $84,063 | 68.1 | 4.7% |
| 61818 | Cerro Gordo | Standard | 1,560 | $84,375 | 45.3 | 0.2% |
| 61854 | Mansfield | Standard | 1,299 | $86,705 | 56.0 | -16.0% |
| 61884 | White Heath | Standard | 973 | $106,250 | 25.9 | -16.7% |
| 61929 | Hammond | Standard | 672 | $79,167 | 37.2 | -2.6% |
| 61839 | De Land | Standard | 558 | $56,389 | 37.1 | -18.2% |
| 61830 | Cisco | Standard | 510 | $67,232 | 33.5 | -3.4% |
| 61936 | La Place | PO Box | 170 | — | 0.8 | 27.8% |
| 61855 | Milmine | Standard | 24 | — | 11.2 | -89.4% |