Darke County is a county located in the U.S. state of Ohio. According to the 2010 census, it has a population of 52,959, which is a decrease of 0.7% from 53,309 in 2000. Its county seat is Greenville, and it is named for William Darke, an officer in the Revolution.

Darke County comprises the Greenville, OH Micropolitan Statistical Area, which is also included in the Dayton-Springfield-Sidney, OH Combined Statistical Area.

Notable natives included Annie Oakley, famed 19th-century markswoman who performed with Buffalo Bill’s Wild Westshow, who was born in Darke County; and Lucullus Virgil McWhorter, a farmer and frontiersman who studied and wrote about the historical American Indian tribes of West Virginia and Ohio.


According to the 2010 census, the county has a total area of 599.76 square miles (1,553.4 km2), of which 598.10 square miles (1,549.1 km2) (or 99.72%) is land and 1.66 square miles (4.3 km2) (or 0.28%) is water.

Adjacent counties

Darke County, Ohio, is one of the few counties in the United States to border eight other counties.

As of the census[7] of 2000, there were 53,309 people, 20,419 households, and 14,905 families residing in the county. The population density was 89 people per square mile (34/km²). There were 21,583 housing units at an average density of 36 per square mile (14/km²). The racial makeup of the county was 98.09% White, 0.39% Black or African American, 0.17% Native American, 0.25% Asian, 0.02% Pacific Islander, 0.34% from other races, and 0.74% from two or more races. 0.86% of the population were Hispanic or Latino of any race. 43.1% were of German, 20.1% American, 8.1% English, 6.8% Irish and 5.8% French ancestry according to Census 2000.

There were 20,419 households out of which 33.30% had children under the age of 18 living with them, 61.00% were married couples living together, 8.00% had a female householder with no husband present, and 27.00% were non-families. 23.50% of all households were made up of individuals and 11.00% 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 26.30% under the age of 18, 7.80% from 18 to 24, 27.50% from 25 to 44, 23.20% from 45 to 64, and 15.30% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 96.10 males. For every 100 females age 18 and over, there were 93.30 males.

The median income for a household in the county was $39,307, and the median income for a family was $45,735. Males had a median income of $32,933 versus $23,339 for females. The per capita income for the county was $18,670. About 6.00% of families and 8.00% of the population were below the poverty line, including 10.10% of those under age 18 and 9.20% of those age 65 or over.

Public school districts

Historic places

Darke County has 25 places listed on the National Register of Historic Places, including the Darke County Courthouse, Sheriff’s House and Jail and the Versailles Town Hall and Wayne Township House.