County ZIP codes · Ohio · FIPS 39081
Jefferson County, OH ZIP Codes
Jefferson County, Ohio has 25 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 23 residential and 2 for PO boxes or a single organization. 20 of the residential ones lie mainly in Jefferson County and 3 mainly in a neighboring county; 11 cross the county line. Median household income ranges from $46,941 in 43907 (Cadiz) to $74,107 in 43953 (Steubenville) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Jefferson County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $55,446 and $69,228.
They carry 22 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 23 residential ZIP codes in Jefferson County
20 ZIP codes lie mainly in Jefferson County; 3 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 43952 | Steubenville | 17,836 | 694 | $48k | $124k | 100% |
| 43953 | Steubenville | 11,274 | 609 | $74k | $150k | 100% |
| 43964 | Toronto | 8,952 | 189 | $60k | $133k | 100% |
| 43938 | Mingo Junction | 5,660 | 173 | $55k | $101k | 100% |
| 43943 | Rayland | 3,457 | 77 | $55k | $136k | 98% |
| 43910 | Bloomingdale | 3,191 | 59 | $71k | $182k | 94% |
| 43944 | Richmond | 2,593 | 84 | $69k | $168k | 100% |
| 43901 | Adena | 2,232 | 72 | $64k | $108k | 66% |
| 43917 | Dillonvale | 2,207 | 68 | $59k | $94k | 91% |
| 43963 | Tiltonsville | 1,262 | 2,862 | $57k | $105k | 100% |
| 43913 | Brilliant | 1,213 | 500 | $44k | $83k | 100% |
| 43908 | Bergholz | 1,073 | 35 | $63k | $100k | 93% |
| 43930 | Hammondsville | 1,017 | 31 | $68k | – | 82% |
| 43932 | Irondale | 1,008 | 45 | $55k | $152k | 93% |
| 43971 | Yorkville | 923 | 728 | $49k | $135k | 67% |
| 43948 | Smithfield | 623 | 1,037 | $143k | $79k | 100% |
| 43939 | Mount Pleasant | 341 | 372 | $46k | $97k | 100% |
| 43926 | Empire | 252 | 834 | $46k | – | 100% |
| 43961 | Stratton | 221 | 1,068 | $40k | $61k | 100% |
| 43925 | East Springfield | 39 | 187 | – | – | 100% |
Partly in Jefferson County
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
11 ZIP codes of Jefferson County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Jefferson | Elsewhere |
|---|---|---|
| 43907 | 3% | Harrison County97% |
| 43943 | 98% | Belmont County2% |
| 43910 | 94% | Harrison County6% |
| 43945 | 12% | Columbiana County59%; Carroll County29% |
| 43901 | 66% | Harrison County26%; Belmont County8% |
| 43917 | 91% | Belmont County9% |
| 43903 | 35% | Carroll County65% |
| 43908 | 93% | Carroll County7% |
| 43930 | 82% | Columbiana County18% |
| 43932 | 93% | Columbiana County7% |
| 43971 | 67% | Belmont County33% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 43941 | Piney Fork |
| 43970 | Wolf Run |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Jefferson County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Jefferson County starts with 439.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 439 | Pittsburgh, PA (SCF 150) | 25 | 61 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.