| ZIP Codes: | 10 ZIP Codes (8 Standard, 2 PO Box, 0 Unique) [See All] |
| Area Codes: | 217 / 447 / 618 / 730 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:12:00 PM |
| Population: | 12,035 [See All] |
| FIPS: | 17061 |
| Land Area: | 588 sq mi |
| Water Area: | 3 sq mi |
| Coordinates: | 39.3602, -90.3850 |
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12,035 residents live across 10 ZIPs covering 588 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 14,066 to 12,035 from 2014 to 2024 — a -14.4% change. 2 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 62081 (Rockbridge, $91,875 median) and poorest ZIP 62092 (White Hall, $56,607) are 13.6 miles apart — a 1.6× income gap across local geography.
Median home values vary 3.7× across this county — from $32,000 in 62078 (Patterson) to $117,600 in 62016 (Carrollton).
Density varies 34× across the county — from 4 people/sq mi in 62050 (Hillview) to 153 in 62078 (Patterson).
Educational attainment ranges from 5.1% bachelor's+ in 62054 (Kane) to 26.1% in 62016 (Carrollton) — the breadth of educational profiles across the area.
Within Illinois, this is the #85 most populous of 102 counties and ranks #61 for median household income .
Weighted by population, the typical household earns about $63,897 across the county — reflecting what a typical resident sees, not a simple ZIP average.
18.5% of adults age 25+ hold a bachelor's degree or higher (1,587 of 8,567 reporting).
8 Standard delivery, 2 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.
Greene County lost 14.4% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 62016 | Carrollton | Standard | 3,882 | $61,949 | 133.6 | 4.2% |
| 62092 | White Hall | Standard | 2,431 | $56,607 | 58.8 | -20.3% |
| 62082 | Roodhouse | Standard | 2,265 | $62,875 | 105.2 | -23.1% |
| 62044 | Greenfield | Standard | 1,852 | $71,146 | 102.2 | -16.8% |
| 62027 | Eldred | Standard | 516 | $64,375 | 56.5 | 8.4% |
| 62081 | Rockbridge | Standard | 329 | $91,875 | 26.7 | -7.3% |
| 62054 | Kane | Standard | 315 | $61,417 | 40.8 | -54.6% |
| 62050 | Hillview | Standard | 268 | $84,432 | 60.0 | -21.6% |
| 62098 | Wrights | PO Box | 104 | — | 3.9 | -21.2% |
| 62078 | Patterson | PO Box | 73 | — | 0.5 | -38.7% |