| ZIP Codes: | 3 ZIP Codes (3 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 217 / 447 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:58 PM |
| Population: | 6,312 [See All] |
| FIPS: | 17009 |
| Land Area: | 300 sq mi |
| Water Area: | 2 sq mi |
| Coordinates: | 39.9518, -90.7327 |
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6,312 residents live across 3 ZIPs covering 300 sq mi, served by 3 distinct USPS-recognized cities.
Population moved from 6,872 to 6,312 from 2014 to 2024 — a -8.1% change. 0 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 62375 (Timewell, $76,855 median) and poorest ZIP 62353 (Mount Sterling, $66,000) are 9.7 miles apart — a 1.2× income gap across local geography.
Median home values vary 1.1× across this county — from $140,800 in 62375 (Timewell) to $152,100 in 62353 (Mount Sterling).
Density varies 4× across the county — from 7 people/sq mi in 62375 (Timewell) to 27 in 62353 (Mount Sterling).
Educational attainment ranges from 9.3% bachelor's+ in 62378 (Versailles) to 23.9% in 62375 (Timewell) — the breadth of educational profiles across the area.
Within Illinois, this is the #91 most populous of 102 counties and ranks #54 for median household income .
Weighted by population, the typical household earns about $67,158 across the county — reflecting what a typical resident sees, not a simple ZIP average.
12.6% of adults age 25+ hold a bachelor's degree or higher (604 of 4,791 reporting).
3 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.
Brown County lost 8.1% of residents between 2014 and 2024. ZIPs that shed the largest share: