Centerville is a city in Montgomery and Greene counties in the U.S. state of Ohio. A part of the Dayton metropolitan area, its population was 23,999 as of the 2010 census.

Centerville is located at 39°38′19″N 84°8′53″W / 39.63861°N 84.14806°W / 39.63861; -84.14806 (39.638709, -84.148087). Although the city is located primarily in Montgomery County, a small portion is located in Greene County.

According to the United States Census Bureau, the city has a total area of 10.85 square miles (28.10 km²), of which 10.78 square miles (27.92 km²) is land and 0.07 square miles (0.18 km²) is water.

Centerville and Washington Township voted November 4, 2008 on whether to create a merger commission. The proposed merger commission succeeded in the city but failed in the township.

As of the census of 2010, there were 23,999 people, 10,693 households, and 6,694 families residing in the city. The population density was 2,226.3 inhabitants per square mile (859.6/km²). There were 11,421 housing units at an average density of 1,059.5 per square mile (409.1/km²). The racial makeup of the city was 90.2% White, 4.0% African American, 0.2% Native American, 3.2% Asian, 0.4% from other races, and 1.9% from two or more races. Hispanic or Latino of any race were 1.8% of the population.

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