| ZIP Codes: | 23 ZIP Codes (16 Standard, 7 PO Box, 0 Unique) [See All] |
| Area Codes: | 220 / 234 / 330 / 740 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:54:39 PM |
| Population: | 67,490 [See All] |
| FIPS: | 39081 |
| CBSA: | Weirton-Steubenville, WV-OH |
| Land Area: | 449 sq mi |
| Water Area: | 3 sq mi |
| Coordinates: | 40.3631, -80.7585 |
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67,490 residents live across 23 ZIPs covering 449 sq mi, served by 22 distinct USPS-recognized cities.
Population moved from 71,086 to 67,490 from 2014 to 2024 — a -5.1% change. 6 ZIPs gained residents, 15 lost.
The county's wealthiest ZIP 43948 (Smithfield, $142,606 median) and poorest ZIP 43913 (Brilliant, $43,914) are 7.9 miles apart — a 3.2× income gap across local geography.
Median home values vary 2.3× across this county — from $78,500 in 43948 (Smithfield) to $181,600 in 43910 (Bloomingdale).
Density varies 88× across the county — from 31 people/sq mi in 43930 (Hammondsville) to 2,687 in 43963 (Tiltonsville).
Educational attainment ranges from 3.8% bachelor's+ in 43930 (Hammondsville) to 30.5% in 43953 (Steubenville) — the breadth of educational profiles across the area.
Within Ohio, this is the #37 most populous of 88 counties and ranks #70 for median household income .
Weighted by population, the typical household earns about $60,059 across the county — reflecting what a typical resident sees, not a simple ZIP average.
19.9% of adults age 25+ hold a bachelor's degree or higher (9,569 of 47,974 reporting). The most-educated ZIPs cluster around Steubenville.
16 Standard delivery, 7 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 3.2× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
Jefferson County lost 5.1% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 43952 | Steubenville | Standard | 17,836 | $47,624 | 25.8 | -4.8% |
| 43953 | Steubenville | Standard | 11,274 | $74,107 | 18.5 | -1.2% |
| 43964 | Toronto | Standard | 8,952 | $60,365 | 47.9 | -4.9% |
| 43938 | Mingo Junction | Standard | 5,660 | $55,446 | 32.2 | 3.3% |
| 43943 | Rayland | Standard | 3,457 | $54,784 | 42.9 | 14.3% |
| 43910 | Bloomingdale | Standard | 3,191 | $71,396 | 56.4 | -2.3% |
| 43944 | Richmond | Standard | 2,593 | $69,228 | 32.1 | -1.1% |
| 43901 | Adena | Standard | 2,232 | $63,603 | 34.4 | -4.9% |
| 43917 | Dillonvale | Standard | 2,207 | $59,280 | 30.9 | -29.6% |
| 43903 | Amsterdam | Standard | 2,116 | $73,281 | 37.2 | 0.1% |
| 43963 | Tiltonsville | Standard | 1,262 | $56,813 | 0.5 | -5.7% |
| 43913 | Brilliant | Standard | 1,213 | $43,914 | 3.1 | -25.3% |
| 43908 | Bergholz | Standard | 1,073 | $62,841 | 29.8 | -34.9% |
| 43930 | Hammondsville | Standard | 1,017 | $68,382 | 33.2 | 27.8% |
| 43932 | Irondale | Standard | 1,008 | $54,531 | 20.1 | 14.3% |
| 43971 | Yorkville | Standard | 923 | $49,327 | 1.2 | -22.2% |
| 43948 | Smithfield | PO Box | 623 | $142,606 | 0.5 | 1.3% |
| 43939 | Mount Pleasant | PO Box | 341 | $46,250 | 0.9 | -42.6% |
| 43926 | Empire | PO Box | 252 | $45,938 | 0.6 | -8.4% |
| 43961 | Stratton | PO Box | 221 | $39,500 | 0.4 | -10.9% |
| 43925 | East Springfield | PO Box | 39 | — | 0.2 | -88.1% |
| 43970 | Wolf Run | PO Box | — | — | 0.0 | — |
| 43941 | Piney Fork | PO Box | — | — | 0.0 | — |