| ZIP Codes: | 8 ZIP Codes (7 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Codes: | 217 / 309 / 447 / 861 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:00 PM |
| Population: | 5,743 [See All] |
| FIPS: | 17071 |
| CBSA: | Burlington, IA-IL |
| Land Area: | 316 sq mi |
| Water Area: | 15 sq mi |
| Coordinates: | 40.7870, -90.9252 |
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5,743 residents live across 8 ZIPs covering 316 sq mi, served by 8 distinct USPS-recognized cities.
Population moved from 6,459 to 5,743 from 2014 to 2024 — a -11.1% change. 3 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 61418 (Biggsville, $84,375 median) and poorest ZIP 61454 (Lomax, $51,000) are 15.0 miles apart — a 1.7× income gap across local geography.
Median home values vary 1.6× across this county — from $83,100 in 61454 (Lomax) to $131,300 in 61437 (Gladstone).
Density varies 195× across the county — from 7 people/sq mi in 61460 (Media) to 1,298 in 61471 (Raritan).
Educational attainment ranges from 5.9% bachelor's+ in 61437 (Gladstone) to 30.9% in 61418 (Biggsville) — the breadth of educational profiles across the area.
Within Illinois, this is the #92 most populous of 102 counties and ranks #76 for median household income .
Weighted by population, the typical household earns about $61,275 across the county — reflecting what a typical resident sees, not a simple ZIP average.
18.9% of adults age 25+ hold a bachelor's degree or higher (816 of 4,324 reporting).
7 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 |
|---|---|---|---|---|---|---|
| 61469 | Oquawka | Standard | 1,818 | $54,932 | 56.4 | -19.7% |
| 61480 | Stronghurst | Standard | 1,236 | $58,750 | 67.1 | -12.5% |
| 61425 | Carman | Standard | 672 | $62,708 | 39.5 | 158.5% |
| 61454 | Lomax | Standard | 579 | $51,000 | 37.8 | 12.2% |
| 61418 | Biggsville | Standard | 575 | $84,375 | 51.9 | -9.7% |
| 61437 | Gladstone | Standard | 549 | $66,000 | 36.0 | -47.4% |
| 61460 | Media | Standard | 180 | $76,607 | 27.1 | -21.7% |
| 61471 | Raritan | PO Box | 134 | $68,750 | 0.1 | 38.1% |