Mason is located in Warren County. About 34,792 people live here (as of 2020). Between 2010 and 2020, the population grew from 30,712 to 34,792. The region is at 247 meters above sea level. The area covers about 48.4 square kilometers. There are about 2.154 streets in Mason. The region was founded in 1815. The postal codes are 45040. The dialing code is 513. Mason is city in Warren County, Ohio, United States. Among other things, Mason has public Transport, hotels, restaurants, cafés, supermarkets, attractions, hairdressers, dentists, doctors and pharmacies.
| Year built | 1815 |
| Area | 48.4 km² |
| Elevation | 247 m |
| Located in | Warren County |
| Postal code | 45040 |
| Country | United States |
| Population | 34792 |
| Official name | Mason |
| Bike path |
| Bike lane on roadway |
| Cycling allowed on bus lane |
| Bicycle street |
| Open to cyclists |
| Open to cyclists, good path |
| Cycling prohibited |
| Cobblestone |
| Long-distance bike route | (depending on scale) |
| Long-distance bike route |
| Long-distance hiking trail | (depending on scale) |
| Long-distance hiking trail |
| Pedestrians prohibited |