Founded in 1648, Northumberland County is one of 95 counties in the state of Virginia. Historically, Northumberland County was formed from The county was created by the Virginia General Assemblyin 1648 during a period of rapid population growth and geographic expansion. The city of Heathsville is the county seat. With FIPS code of 133, Northumberland County has a population of 12,029 and area of 192 square miles (497 km2).
List of all cities in Northumberland County, VA alphabetically
| City/Town | Postal Code | Area Code |
| Burgess, VA | 22432 | 804 |
| Callao, VA | 22435 | 804 |
| Edwardsville, VA | 22456 | 804 |
| Heathsville, VA | 22473 | 804 |
| Lewisetta, VA | 22511 | 804 |
| Lottsburg, VA | 22511 | 804 |
| Ophelia, VA | 22530 | 804 |
| Reedville, VA | 22539 | 804 |
| Walmsley, VA | 22435 | 804 |
| Wicomico Church, VA | 22579 | 804 |