| ZIP Codes: | 15 ZIP Codes (10 Standard, 5 PO Box, 0 Unique) [See All] |
| Area Codes: | 326 / 419 / 567 / 937 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:19 PM |
| Population: | 47,584 [See All] |
| FIPS: | 39037 |
| CBSA: | Greenville, OH |
| Land Area: | 524 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 40.1657, -84.6176 |
| Quick Link: |
47,584 residents live across 15 ZIPs covering 524 sq mi, served by 15 distinct USPS-recognized cities.
Population moved from 48,139 to 47,584 from 2014 to 2024 — a -1.2% change. 7 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 45348 (New Weston, $120,170 median) and poorest ZIP 45390 (Union City, $52,150) are 8.3 miles apart — a 2.3× income gap across local geography.
Median home values vary 2.8× across this county — from $114,000 in 45332 (Hollansburg) to $324,700 in 45388 (Yorkshire).
Density varies 79× across the county — from 31 people/sq mi in 45348 (New Weston) to 2,417 in 45358 (Pitsburg).
Educational attainment ranges from 8.7% bachelor's+ in 45362 (Rossburg) to 22.8% in 45380 (Versailles) — the breadth of educational profiles across the area.
Within Ohio, this is the #51 most populous of 88 counties and ranks #28 for median household income .
Weighted by population, the typical household earns about $65,251 across the county — reflecting what a typical resident sees, not a simple ZIP average.
16.7% of adults age 25+ hold a bachelor's degree or higher (5,469 of 32,682 reporting).
10 Standard delivery, 5 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 |
|---|---|---|---|---|---|---|
| 45331 | Greenville | Standard | 22,356 | $53,801 | 150.2 | 0.3% |
| 45304 | Arcanum | Standard | 7,599 | $78,125 | 85.2 | -0.1% |
| 45380 | Versailles | Standard | 5,394 | $84,135 | 69.4 | 3.1% |
| 45390 | Union City | Standard | 3,432 | $52,150 | 55.0 | 3.7% |
| 45303 | Ansonia | Standard | 2,188 | $65,556 | 30.8 | 4.9% |
| 45346 | New Madison | Standard | 1,663 | $77,083 | 40.0 | -27.3% |
| 45362 | Rossburg | Standard | 1,071 | $61,687 | 33.1 | -22.6% |
| 45348 | New Weston | Standard | 848 | $120,170 | 27.7 | 1.4% |
| 45388 | Yorkshire | Standard | 841 | $86,996 | 17.7 | -5.0% |
| 45332 | Hollansburg | Standard | 716 | $77,250 | 13.6 | 7.8% |
| 45328 | Gettysburg | PO Box | 544 | $63,125 | 0.4 | -8.0% |
| 45358 | Pitsburg | PO Box | 362 | $60,625 | 0.1 | -17.4% |
| 45351 | Osgood | PO Box | 328 | $101,875 | 0.5 | 49.8% |
| 45352 | Palestine | PO Box | 173 | $62,500 | 0.1 | -4.4% |
| 45350 | North Star | PO Box | 69 | $102,500 | 0.5 | -47.3% |