| ZIP Codes: | 10 ZIP Codes (10 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 217 / 447 / 618 / 730 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:00 PM |
| Population: | 36,777 [See All] |
| FIPS: | 17049 |
| CBSA: | Effingham, IL |
| Land Area: | 629 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 39.0750, -88.5910 |
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36,777 residents live across 10 ZIPs covering 629 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 37,509 to 36,777 from 2014 to 2024 — a -2.0% change. 2 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 62467 (Teutopolis, $96,406 median) and poorest ZIP 62426 (Edgewood, $51,667) are 20.5 miles apart — a 1.9× income gap across local geography.
Median home values vary 2.4× across this county — from $95,600 in 62426 (Edgewood) to $232,800 in 62467 (Teutopolis).
Density varies 11× across the county — from 16 people/sq mi in 62461 (Shumway) to 180 in 62401 (Effingham).
Educational attainment ranges from 9.1% bachelor's+ in 62443 (Mason) to 36.9% in 62467 (Teutopolis) — the breadth of educational profiles across the area.
Within Illinois, this is the #36 most populous of 102 counties and ranks #40 for median household income .
Weighted by population, the typical household earns about $80,027 across the county — reflecting what a typical resident sees, not a simple ZIP average.
26.2% of adults age 25+ hold a bachelor's degree or higher (6,673 of 25,439 reporting).
10 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 62401 | Effingham | Standard | 19,273 | $82,374 | 107.2 | 3.2% |
| 62411 | Altamont | Standard | 4,249 | $66,111 | 87.7 | -7.1% |
| 62467 | Teutopolis | Standard | 3,710 | $96,406 | 55.1 | -7.3% |
| 62424 | Dieterich | Standard | 2,500 | $84,635 | 85.9 | 12.5% |
| 62414 | Beecher City | Standard | 1,783 | $58,370 | 76.9 | -2.1% |
| 62443 | Mason | Standard | 1,609 | $86,950 | 66.4 | -0.1% |
| 62473 | Watson | Standard | 1,264 | $74,700 | 21.8 | -13.2% |
| 62445 | Montrose | Standard | 986 | $81,484 | 44.9 | -19.5% |
| 62426 | Edgewood | Standard | 778 | $51,667 | 43.4 | -30.8% |
| 62461 | Shumway | Standard | 625 | $74,350 | 39.5 | -22.0% |