Van Wert is a city in the U.S. state of Ohio and the county seat of Van Wert County. The municipality is located in northwestern Ohio. The population was 10,846 at the 2010 census. It is the principal city of and is included in the Van Wert Micropolitan Statistical Area, which is included in the Lima-Van Wert-Wapakoneta, Ohio Combined Statistical Area. Van Wert is named for Isaac Van Wart, one of the captors of Major John André in the American Revolutionary War. A center of peony cultivation, Van Wert has hosted the annual Van Wert Peony Festival on and off since 1902. Van Wert is home to the first county library in the United States, the Brumback Library.