Wapakoneta is a city in and the county seat of Auglaize County, Ohio, United States. Located along the Auglaize River, the city is about 56 miles north of Dayton and 83 miles south of Toledo. The population was 9,957 at the 2020 census. It is the principal city of the Wapakoneta micropolitan area, which is included in the Lima–Van Wert–Celina combined statistical area. Neil Armstrong, the first man on the Moon, grew up in Wapakoneta, which is now the home of the Armstrong Air& Space Museum.