Northumberland County, Virginia
Northumberland County, Virginia, has 12,557 residents (July 2025 estimate). Its county seat is Heathsville. It uses Eastern Time and covers 191 sq mi (496 km²) of land.
- Resident population, July 2025
- 12,557
- Land area
- 191 sq mi (496 km²)
- County seat or government
- Heathsville
- Time zone
- Eastern TimeUTC-05:00 in January; UTC-04:00 in July
- Median household income
- $66,480 ± $4,444
- Median home value
- $346,800 ± $43,106
- Median rent, with utilities
- $1,038 ± $299
- Homes lived in by their owners
- 86.1% ± 3.6 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Lexington Park, MD metro area and Salisbury, MD metro area
- Water area
- 94.2 sq mi (244 km²)
- State
- Virginia
- County code (FIPS)
- 51133
- Coordinates (central point)
- 37.856975, -76.379688
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Northumberland County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Eastern TimeAmerica/New_York | UTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 224735,498 people
- 225034,296 people
- 224823,075 people
- 224352,215 people
- 225392,074 people
- 225111,239 people
- 22432256 people
7 ZIP Code areas overlap Northumberland County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
School districts in Northumberland County, largest first
- Northumberland County Public Schools12,188 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Kilmarnock, Virginia (town)1,333 people
- Heathsville, Virginia (CDP)98 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Lancaster County, Virginia11 mi south
- Richmond County, Virginia20 mi west
- St. Mary's County, Maryland27 mi north
- Westmoreland County, Virginia29 mi northwest
- Somerset County, Maryland32 mi northeast
- Accomack County, Virginia35 mi east
Before using this answer on a form
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