Hardtner is located in Barber County. About 167 people live here (as of 2020). Between 2010 and 2020, the population declined from 172 to 167. The region is at 434 meters above sea level. The area covers about 0.8 square kilometers. There are about 18 streets in Hardtner. The postal codes are 67057. The dialing code is 620. Hardtner is human settlement in Barber County, Kansas, United States of America. Among other things, Hardtner has schools.
| Area | 0.8 km² |
| Elevation | 434 m |
| Located in | Barber County |
| Postal code | 67057 |
| Country | United States |
| Population | 167 |
| Official name | Hardtner |
| 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 |