Troy is located in Miami County. About 26,305 people live here (as of 2020). Between 2010 and 2020, the population grew from 25,058 to 26,305. The region is at 252 meters above sea level. The area covers about 31.0 square kilometers. There are about 766 streets in Troy. The postal codes are 45373–45374, 45373, 45374. The dialing code is 937. Troy is city in and seat of Miami County, Ohio, United States. Among other things, Troy has restaurants, cafés, supermarkets, schools, banks, dentists and doctors. More information at
www.troyohio.gov.