Beavercreek is the largest city in Greene County, Ohio, United States, and is the second largest suburb of Dayton behind Kettering. The population was 45,193 at the 2010 census. It is part of the Dayton Metropolitan Statistical Area. The Beavercreek area was settled in the early 19th century, and in 1979, a part of Beavercreek Township was incorporated and became the City of Beavercreek in February 1980.