| ZIP Codes: | 9 ZIP Codes (5 Standard, 4 PO Box, 0 Unique) [See All] |
| Area Codes: | 419 / 567 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:21 PM |
| Population: | 25,754 [See All] |
| FIPS: | 39117 |
| CBSA: | Columbus, OH |
| Land Area: | 278 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 40.5184, -82.7901 |
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25,754 residents live across 9 ZIPs covering 278 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 26,249 to 25,538 from 2014 to 2024 — a -2.7% change. 3 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 43334 (Marengo, $100,825 median) and poorest ZIP 43321 (Fulton, $48,125) are 4.6 miles apart — a 2.1× income gap across local geography.
Median home values vary 2.1× across this county — from $124,300 in 43320 (Edison) to $262,900 in 43334 (Marengo).
Density varies 68× across the county — from 38 people/sq mi in 43320 (Edison) to 2,593 in 43321 (Fulton).
Educational attainment ranges from 9.6% bachelor's+ in 43320 (Edison) to 23.6% in 43338 (Mount Gilead) — the breadth of educational profiles across the area.
Within Ohio, this is the #77 most populous of 88 counties and ranks #59 for median household income .
Weighted by population, the typical household earns about $78,296 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.2% of adults age 25+ hold a bachelor's degree or higher (3,592 of 18,753 reporting).
5 Standard delivery, 4 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 43338 | Mount Gilead | Standard | 10,599 | $72,311 | 97.2 | 4.2% |
| 43315 | Cardington | Standard | 6,873 | $73,770 | 84.7 | -3.0% |
| 43334 | Marengo | Standard | 6,326 | $100,825 | 64.4 | -8.0% |
| 43320 | Edison | Standard | 1,189 | $51,603 | 31.1 | -29.5% |
| 43321 | Fulton | Standard | 378 | $48,125 | 0.1 | 37.0% |
| 43317 | Chesterville | PO Box | 173 | $56,875 | 0.2 | 12.3% |
| 43350 | Sparta | PO Box | 146 | $70,583 | 0.1 | — |
| 43325 | Iberia | PO Box | 70 | — | 0.0 | — |
| 43349 | Shauck | PO Box | — | — | 0.0 | — |