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Knox County, Ohio
Map of Ohio highlighting Knox County
Location in the state of Ohio
Map of USA OH
Ohio's location in the U.S.
Founded March 1 1808[1]
Named for Henry Knox
Seat Mount Vernon
Largest city Mount Vernon
 - Total
 - Land
 - Water

530 sq mi (1,373 km²)
527 sq mi (1,365 km²)
2 sq mi (5 km²), 0.46%
 - (2000)
 - Density

103/sq mi (40/km²)
Time zone Eastern: UTC-5/-4

Knox County is a county located in the state of Ohio, United States. As of 2000, the population was 54,500. Its county seat is Mount Vernon6 and is named for Henry Knox, an officer in the American Revolutionary War who was later the first Secretary of War.[2]


According to the U.S. Census Bureau, the county has a total area of 1,371 km² (530 sq mi). 1,365 km² (527 sq mi) of it is land and 6 km² (2 sq mi) of it (0.46%) is water.

Adjacent counties Edit


As of the census² of 2000, there were 54,500 people, 19,975 households, and 14,362 families residing in the county. The population density was 40/km² (103/sq mi). There were 21,793 housing units at an average density of 16/km² (41/sq mi). The racial makeup of the county was 97.66% White, 0.67% Black or African American, 0.21% Native American, 0.34% Asian, 0.02% Pacific Islander, 0.21% from other races, and 0.89% from two or more races. 0.68% of the population were Hispanic or Latino of any race. 95.6% spoke English, 1.3% German and 1.1% Spanish as their first language.

There were 19,975 households out of which 32.50% had children under the age of 18 living with them, 59.60% were married couples living together, 8.50% had a female householder with no husband present, and 28.10% were non-families. 23.90% of all households were made up of individuals and 10.60% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.03.

In the county, the population was spread out with 24.80% under the age of 18, 11.70% from 18 to 24, 26.70% from 25 to 44, 23.00% from 45 to 64, and 13.80% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 94.70 males. For every 100 females age 18 and over, there were 90.90 males.

The median income for a household in the county was $38,877, and the median income for a family was $45,119. Males had a median income of $34,363 versus $24,352 for females. The per capita income for the county was $17,695. About 7.40% of families and 10.10% of the population were below the poverty line, including 13.60% of those under age 18 and 7.60% of those age 65 or over.


Main article: Ohio county government.

Localities Edit

Map of Knox County Ohio With Municipal and Township Labels

Map of Knox County, Ohio With Municipal and Township Labels

Municipalities Edit

Townships Edit

Other localities Edit

Colleges and universities Edit

Notable residentsEdit


  • ^ {{cite web|url = |title = Knox County data |accessdate = 2007-04-28 |publisher = Ohio State University
  • ^ Who Was Who in America, Historical Volume, 1607-1896. Marquis Who's Who. 1967. 
  • External linksEdit

    Coordinates: 40°24′N 82°25′W / 40.40, -82.42

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