| ZIP Codes: | 21 ZIP Codes (16 Standard, 5 PO Box, 0 Unique) [See All] |
| Area Codes: | 234 / 330 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:18 PM |
| Population: | 104,765 [See All] |
| FIPS: | 39029 |
| CBSA: | Salem, OH |
| Land Area: | 603 sq mi |
| Water Area: | 4 sq mi |
| Coordinates: | 40.7779, -80.7820 |
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104,765 residents live across 21 ZIPs covering 603 sq mi, served by 21 distinct USPS-recognized cities.
Population moved from 111,410 to 104,316 from 2014 to 2024 — a -6.4% change. 5 ZIPs gained residents, 13 lost.
The county's wealthiest ZIP 44441 (Negley, $144,412 median) and poorest ZIP 44490 (Washingtonville, $38,906) are 15.8 miles apart — a 3.7× income gap across local geography.
Median home values vary 2.2× across this county — from $102,500 in 43968 (Wellsville) to $226,400 in 44445 (New Waterford).
Density varies 18× across the county — from 42 people/sq mi in 43945 (Salineville) to 742 in 44490 (Washingtonville).
Educational attainment ranges from 10.9% bachelor's+ in 43945 (Salineville) to 34.0% in 44408 (Columbiana) — the breadth of educational profiles across the area.
Within Ohio, this is the #27 most populous of 88 counties and ranks #42 for median household income .
Weighted by population, the typical household earns about $61,813 across the county — reflecting what a typical resident sees, not a simple ZIP average.
18.1% of adults age 25+ hold a bachelor's degree or higher (13,684 of 75,721 reporting).
16 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 3.7× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
Columbiana County lost 6.0% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 44460 | Salem | Standard | 25,082 | $57,423 | 107.5 | -5.1% |
| 43920 | East Liverpool | Standard | 21,103 | $50,251 | 42.4 | -9.3% |
| 44432 | Lisbon | Standard | 12,030 | $61,125 | 106.0 | -10.9% |
| 44408 | Columbiana | Standard | 11,159 | $74,028 | 35.8 | 5.4% |
| 44413 | East Palestine | Standard | 7,397 | $50,999 | 24.4 | -2.2% |
| 43968 | Wellsville | Standard | 6,623 | $59,200 | 35.8 | -1.8% |
| 44431 | Leetonia | Standard | 4,788 | $68,750 | 27.7 | 3.0% |
| 44445 | New Waterford | Standard | 2,914 | $85,188 | 15.5 | -9.2% |
| 43945 | Salineville | Standard | 2,910 | $62,500 | 69.2 | -9.3% |
| 44423 | Hanoverton | Standard | 2,177 | $80,583 | 32.2 | -24.4% |
| 44634 | Homeworth | Standard | 1,837 | $80,136 | 18.7 | -13.1% |
| 44455 | Rogers | Standard | 1,597 | $71,050 | 17.8 | -1.6% |
| 44441 | Negley | Standard | 1,571 | $144,412 | 16.5 | 3.6% |
| 44427 | Kensington | Standard | 1,451 | — | 30.8 | 0.9% |
| 44625 | East Rochester | Standard | 962 | $75,060 | 20.3 | -43.0% |
| 44490 | Washingtonville | Standard | 597 | $38,906 | 0.8 | -31.4% |
| 44415 | Elkton | PO Box | 345 | — | 0.0 | — |
| 44665 | North Georgetown | PO Box | 104 | — | 0.0 | — |
| 43962 | Summitville | PO Box | 67 | $90,833 | 0.9 | -23.9% |
| 44493 | Winona | PO Box | 51 | — | 0.1 | 30.8% |
| 44492 | West Point | PO Box | — | — | 0.0 | — |