Hartly is located in Kent County. About 73 people live here (as of 2020). Between 2010 and 2020, the population declined from 74 to 73. The region is at 21 meters above sea level. The area covers about 0.2 square kilometers. There are about 7 streets in Hartly. The postal codes are 19953. The dialing code is 302. Hartly is town in Kent County, Delaware, United States.
| Area | 0.2 km² |
| Elevation | 21 m |
| Located in | Kent County |
| Postal code | 19953 |
| Country | United States |
| Population | 73 |
| Official name | Hartly |
| 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 |
Public transit map Hartly Legend 
Bicycle map Hartly Legend 
Pedestrian map Hartly Legend