Jefferson County, Ohio

County seat: Steubenville · Population 63,597 (2025) · 408 sq mi

Jefferson County is the 40th most populous of Ohio's 88 counties, with 63,597 people (2025 estimate). Its county seat is Steubenville. The map shows its 18 cities and towns and the 7 neighboring counties.

Map of Jefferson County, Ohio with cities, towns and the county boundary
Jefferson County, Ohio with its cities and towns, unincorporated communities (CDPs) and neighboring counties. Boundaries: U.S. Census Bureau, 2025. Free to use with attribution (CC BY 4.0).
Download PDF (Letter) 130 KBPNG image 110 KBOhio county map

Jefferson County facts

County seat
Steubenville
Population (2025 estimate)
63,597 −2.5% since 2020
Land area
408 sq mi 66th largest of 88
Water area
3 sq mi
Population density
156 per sq mi
Established
1797
Named after
Thomas Jefferson Founding Father, U.S. president from 1801 to 1809 (1743–1826)
Largest city
Steubenville 17,922
Median household income
$59,055
Cities and towns
18 plus 4 CDPs
ZIP codes
23
Time zone
Eastern
FIPS code
39081

Cities and towns in Jefferson County

Jefferson County has 18 incorporated cities, towns and villages. Populations count the people living inside Jefferson County; cities that cross a county line also list the other counties.

NameTypePopulation 2025Also in
Steubenville (county seat)City17,922
TorontoCity5,149
WintersvilleVillage3,660
Mingo JunctionVillage3,233
TiltonsvilleVillage1,215
DillonvaleVillage591
AdenaVillage530Harrison County
BergholzVillage524
YorkvilleVillage522Belmont County
AmsterdamVillage425
RichmondVillage397
RaylandVillage384
Mount PleasantVillage377
IrondaleVillage316
StrattonVillage257
EmpireVillage232
New AlexandriaVillage224
BloomingdaleVillage133

Unincorporated communities (CDPs)

Census-designated places are communities without their own city government; the county provides their services.

CommunityPopulationAlso in
Brilliant1,213
Connorville183
Pottery Addition110
East Springfield39

ZIP codes in Jefferson County

23 ZIP codes reach into Jefferson County. ZIP codes ignore county lines, so some also cover a neighboring county.

Population of Jefferson County, 2020–2025

Jefferson County shrank by 1,633 people (−2.5%) between April 2020 and July 2025: 2,380 more deaths than births and a net gain of 753 people from migration.

Year (July 1)Population
202065,159
202165,062
202264,149
202364,092
202463,868
202563,597

Neighboring counties

Printable Jefferson County map

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Sources

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