| ZIP Codes: | 6 ZIP Codes (6 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 812 / 930 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:23 PM |
| Population: | 30,886 [See All] |
| FIPS: | 18027 |
| CBSA: | Washington, IN |
| Land Area: | 393 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 38.7311, -87.0537 |
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30,886 residents live across 6 ZIPs covering 393 sq mi, served by 6 distinct USPS-recognized cities.
Population moved from 29,559 to 30,886 from 2014 to 2024 — a +4.5% change. 4 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 47558 (Montgomery, $91,184 median) and poorest ZIP 47568 (Plainville, $53,125) are 10.1 miles apart — a 1.7× income gap across local geography.
Median home values vary 2.9× across this county — from $92,900 in 47568 (Plainville) to $269,700 in 47558 (Montgomery).
Density varies 9× across the county — from 15 people/sq mi in 47519 (Cannelburg) to 131 in 47501 (Washington).
Educational attainment ranges from 11.5% bachelor's+ in 47568 (Plainville) to 17.8% in 47501 (Washington) — the breadth of educational profiles across the area.
Within Indiana, this is the #55 most populous of 92 counties and ranks #54 for median household income .
Weighted by population, the typical household earns about $69,390 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.4% of adults age 25+ hold a bachelor's degree or higher (3,171 of 19,297 reporting).
6 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.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 47501 | Washington | Standard | 18,612 | $62,982 | 142.0 | 3.7% |
| 47558 | Montgomery | Standard | 5,354 | $91,184 | 89.3 | 5.3% |
| 47562 | Odon | Standard | 4,967 | $71,250 | 69.6 | 14.4% |
| 47529 | Elnora | Standard | 1,037 | $69,135 | 36.7 | 20.7% |
| 47568 | Plainville | Standard | 538 | $53,125 | 30.1 | -39.7% |
| 47519 | Cannelburg | Standard | 378 | $75,588 | 25.0 | -13.3% |