| Official Name: | Pennrock, Delaware |
| Pushpin Map: | Delaware#USA |
| Pushpin Label: | Penrock |
| Pushpin Label Position: | left |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Delaware |
| Subdivision Type2: | County |
| Subdivision Name2: | New Castle |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 157 |
| Coordinates: | 39.7917°N -75.4872°W |
| Area Code: | 302 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 216857 |
Penrnock is an unincorporated community in New Castle County, Delaware, United States. Pennrock is located northeast of Silverside Road and southeast of Interstate 95 to the northeast of Wilmington.