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Montgomery County Ohio Last Updated: 08/16/2026 |
| Montgomery County is located in southwestern Ohio, United States. According to the 2020 census, the population was 537,309. The county seat is Dayton. There are 24 cities in Montgomery County, Ohio. Montgomery is an affluent, historic suburb northeast of Cincinnati, known for its charming 19th-century historic district, top-rated public schools, and upscale restaurants. | |
| Montgomery County and the city of Dayton are home to several rear-area memorials, including: the National Aviation Heritage Site, the National Museum of the United States Air Force, Carillon Historical Park, the Dayton Metro Library, the Aviation Trail Museum, and the Wright Company Factory. | |