kids encyclopedia robot

Jefferson County, Ohio facts for kids

Kids Encyclopedia Facts
Quick facts for kids
Jefferson County
Jefferson County Courthouse
Jefferson County Courthouse
Flag of Jefferson County
Official seal of Jefferson County
Map of Ohio highlighting Jefferson County
Location within the U.S. state of Ohio
Map of the United States highlighting Ohio
Ohio's location within the U.S.
Country  United States
State  Ohio
Founded July 29, 1797
Named for Thomas Jefferson
Seat Steubenville
Largest city Steubenville
 • Total 411 sq mi (1,060 km2)
 • Land 408 sq mi (1,060 km2)
 • Water 2.6 sq mi (7 km2)  0.6%%
 • Total 65,249
 • Density 158.76/sq mi (61.30/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 6th

Jefferson County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 65,249. Its county seat is Steubenville. The county is named for Thomas Jefferson, who was vice president at the time of its creation.

Jefferson County is part of the Weirton-Steubenville, WV-OH Metropolitan Statistical Area, which is also included in the Pittsburgh-New Castle-Weirton, PA-WV-OH Combined Statistical Area.


Jefferson County was organized on July 29, 1797 by proclamation of Governor Arthur St. Clair, six years before Ohio was granted statehood.

In 1786, the United States built Fort Steuben to protect the government surveyors mapping the land west of the Ohio River. When the surveyors completed their task a few years later, the fort was abandoned. In the meantime, settlers had built homes around the fort; they named their settlement La Belle. When the County was created in 1797, La Belle was selected as the County seat. The town was subsequently renamed Steubenville, in honor of the abandoned fort.

During the first half of the nineteenth century, Steubenville was primarily a port town, and the rest of the county consisted of small villages and farms. However, in 1856, Frazier, Kilgore and Company erected a rolling mill (the forerunner of steel mills) and the Steubenville Coal and Mining Company sank a coal shaft, resulting in Jefferson County becoming one of the leading centers of the new Industrial Revolution.

Jefferson County's population has declined to 70% of its 1960 figure as its manufacturing base collapsed over the last few decades.


According to the U.S. Census Bureau, the county has a total area of 411 square miles (1,060 km2), of which 408 square miles (1,060 km2) is land and 2.6 square miles (6.7 km2) (0.6%) is water.

Adjacent counties


Historical population
Census Pop.
1800 8,766
1810 17,260 96.9%
1820 18,531 7.4%
1830 22,489 21.4%
1840 25,030 11.3%
1850 29,133 16.4%
1860 26,115 −10.4%
1870 29,188 11.8%
1880 33,018 13.1%
1890 39,415 19.4%
1900 44,357 12.5%
1910 65,423 47.5%
1920 77,580 18.6%
1930 88,307 13.8%
1940 98,129 11.1%
1950 96,495 −1.7%
1960 99,201 2.8%
1970 96,193 −3.0%
1980 91,564 −4.8%
1990 80,298 −12.3%
2000 73,894 −8.0%
2010 69,709 −5.7%
2020 65,249 −6.4%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2020

2010 census

As of the 2010 United States Census, there were 69,709 people, 29,109 households, and 18,713 families living in the county. The population density was 170.7 inhabitants per square mile (65.9/km2). There were 32,826 housing units at an average density of 80.4 per square mile (31.0/km2). The racial makeup of the county was 91.9% white, 5.6% black or African American, 0.4% Asian, 0.1% American Indian, 0.2% from other races, and 1.7% from two or more races. Those of Hispanic or Latino origin made up 1.1% of the population. In terms of ancestry, 20.0% were German, 17.1% were Irish, 12.9% were Italian, 9.1% were English, 8.3% were Polish, and 4.6% were American.

Of the 29,109 households, 26.4% had children under the age of 18 living with them, 47.0% were married couples living together, 12.4% had a female householder with no husband present, 35.7% were non-families, and 30.5% of all households were made up of individuals. The average household size was 2.32 and the average family size was 2.86. The median age was 43.9 years.

The median income for a household in the county was $37,527 and the median income for a family was $47,901. Males had a median income of $43,601 versus $27,965 for females. The per capita income for the county was $20,470. About 12.4% of families and 17.7% of the population were below the poverty line, including 29.5% of those under age 18 and 7.7% of those age 65 or over.


Commercial air service is available at nearby Pittsburgh International Airport to the east via U.S. Route 22. The county is served by two general aviation fields, the Jefferson County Airpark and the Eddie Dew Memorial Airpark.

Ohio Route 7 is the main north–south highway through the county.


Map of Jefferson County Ohio With Municipal and Township Labels
Map of Jefferson County, Ohio with Municipal and Township Labels




  • Brush Creek
  • Cross Creek
  • Island Creek
  • Knox
  • Mount Pleasant
  • Ross
  • Salem
  • Saline
  • Smithfield
  • Springfield
  • Steubenville
  • Warren
  • Wayne
  • Wells

Census-designated places

Unincorporated communities

Historical community

Carpenter's Fort, or Carpenter's Station as it was sometimes called, was established in the summer of 1781 when John Carpenter built a fortified house above the mouth of Short Creek on the Ohio side of the Ohio River in Coshocton County, but now in Jefferson County, Ohio, near Marietta, Ohio.

Population ranking

The population ranking of the following table is based on the 2010 census of Jefferson County.

county seat

Rank City/Town/etc. Population (2010 Census) Municipal type
1 Steubenville 18,659 City
2 Toronto 5,091 City
3 Wintersville 3,924 Village
4 Mingo Junction 3,454 Village
5 Tiltonsville 1,372 Village
6 Yorkville partially in Belmont County 1,079 Village
7 Smithfield 869 Village
8 Adena 759 Village
9 Dillonvale 665 Village
10 Bergholz 664 Village
11 Amsterdam 511 Village
12 Mount Pleasant 478 Village
13 Richmond 481 Village
14 Rayland 417 Village
15 Irondale 387 Village
16 Empire 299 Village
17 Stratton 294 Village
18 Pottery Addition 293 CDP
19 New Alexandria 272 Village
20 Bloomingdale 202 Village


Colleges and universities

  • Franciscan University of Steubenville

Community, junior, and technical colleges

  • Eastern Gateway Community College
  • Trinity Health System School of Nursing

Public school districts

  • Buckeye Local School District
  • Edison Local School District
  • Indian Creek Local School District
  • Steubenville City School District
  • Toronto City School District

High schools

  • Buckeye Local High School
  • Catholic Central High School
  • Edison High School
  • Indian Creek High School
  • Jefferson County Christian School
  • Steubenville High School
  • Toronto High School
kids search engine
Jefferson County, Ohio Facts for Kids. Kiddle Encyclopedia.