| ZIP Codes: | 9 ZIP Codes (8 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Codes: | 779 / 815 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:00 PM |
| Population: | 53,752 [See All] |
| FIPS: | 17063 |
| CBSA: | Chicago-Naperville-Elgin, IL-IN |
| Land Area: | 438 sq mi |
| Water Area: | 12 sq mi |
| Coordinates: | 41.2654, -88.3790 |
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53,752 residents live across 9 ZIPs covering 438 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 51,372 to 53,752 from 2014 to 2024 — a +4.6% change. 4 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 60447 (Minooka, $108,210 median) and poorest ZIP 60416 (Coal City, $75,219) are 13.5 miles apart — a 1.4× income gap across local geography.
Median home values vary 1.8× across this county — from $177,500 in 60474 (South Wilmington) to $322,700 in 60447 (Minooka).
Density varies 76× across the county — from 18 people/sq mi in 60479 (Verona) to 1,351 in 60474 (South Wilmington).
Educational attainment ranges from 9.5% bachelor's+ in 60407 (Braceville) to 27.4% in 60447 (Minooka) — the breadth of educational profiles across the area.
Within Illinois, this is the #26 most populous of 102 counties and ranks #16 for median household income .
Weighted by population, the typical household earns about $89,351 across the county — reflecting what a typical resident sees, not a simple ZIP average.
23.1% of adults age 25+ hold a bachelor's degree or higher (8,324 of 36,098 reporting).
8 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 |
|---|---|---|---|---|---|---|
| 60450 | Morris | Standard | 20,783 | $81,777 | 164.1 | 1.3% |
| 60447 | Minooka | Standard | 16,102 | $108,210 | 70.7 | 15.6% |
| 60416 | Coal City | Standard | 9,550 | $75,219 | 24.3 | 4.2% |
| 60424 | Gardner | Standard | 2,153 | $83,250 | 59.6 | -7.3% |
| 60444 | Mazon | Standard | 1,901 | $87,614 | 45.7 | 0.6% |
| 60407 | Braceville | Standard | 1,812 | $89,792 | 17.0 | -0.8% |
| 60479 | Verona | Standard | 671 | $105,000 | 37.7 | -7.8% |
| 60474 | South Wilmington | PO Box | 663 | $85,500 | 0.5 | -19.8% |
| 60437 | Kinsman | Standard | 117 | $58,750 | 18.1 | -28.7% |