Hart is located in Castro County. About 869 people live here (as of 2020). Between 2010 and 2020, the population declined from 1,114 to 869. The region is at 1119 meters above sea level. The area covers about 1.9 square kilometers. There are about 36 streets in Hart. The postal codes are 79043. The dialing code is 806. Hart is city in Castro County, Texas, United States.
| Area | 1.9 km² |
| Elevation | 1119 m |
| Located in | Castro County |
| Postal code | 79043 |
| Country | United States |
| Population | 869 |
| Official name | Hart |
| 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 |