19731 zip code is for the port penn city which is located in new castle county of the delaware state. The complete information of the zip code 19731 is given below :
| Zip code | 19731 |
| City | Port Penn |
| County | New Castle |
| State | Delaware |
| Country | United States |
| Time zone | Eastern standard time (GMT -05:00) |
| Latitude | 39.5194° N |
| Longitude | 75.5775° W |