Prairie Grove is a city in Washington County, Arkansas, United States. The population was 4,380 at the 2010 Census. It is part of the Northwest Arkansas region, and home to Prairie Grove Battlefield State Park. The park spans a large amount of land and contains a visitor center, museum, several monuments, a driving tour and a collection of period buildings and homes.
Prairie Grove was the site of the Battle of Prairie Grove during the American Civil War. Confederate forces under General Thomas C. Hindman attempted to prevent the juncture of two Federal forces under Generals James G. Blunt and Francis J. Herron. The result of the battle was a tactical stalemate which assured permanent Union control of northwest Arkansas. The battlefield is now a State Military Park.
A post office has been in operation at Prairie Grove since 1867. Prairie Grove was platted in 1877.
A 100-foot wind turbine near Prairie Grove, installed in the early 2000s.
The Natural Resources Defense Council released an issue paper stating between that 1997 and 2001, Prairie Grove was the center of a cluster of testicular cancer cases.