County Maps US

Lancaster County, Virginia

A county in Virginia, ranked 112 of 133 by population.

CountyFIPS 51103

Within Virginia
Lancaster County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Lancaster, the county seat, located via the 2025 Census Gazetteer.

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Population
10,995
+96 (+0.9%) since 2020
Land area
133.3
square miles. A further 42.4% of the total area is water
Population density
82.5
people per square mile, computed rather than published
County seat
Lancaster
Seat of county government.
Established
1651
374 years ago
Largest city
Kilmarnock town
Population 1,381 for the whole place, which extends beyond this county.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Lancaster County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Lancaster County, Virginia from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 674 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Lancaster County ranks

Position among the 133 counties and independent cities of Virginia, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn VirginiaNationally
Population10,995112th of 1332,344th of 3,144
Land area133.3 sq mi94th of 1333,070th of 3,144
Population density82.5 per sq mi80th of 1331,050th of 3,144
Median household income$69,71362nd of 1331,217th of 3,143

Full data for Lancaster County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population10,995Vintage 2025 Population Estimates
Population in 202010,899Vintage 2025 Population Estimates
2020 estimates base?10,918Vintage 2025 Population Estimates
Land area133.3 sq mi2025 Gazetteer Files
Water area98.1 sq mi2025 Gazetteer Files
Total area231.4 sq mi2025 Gazetteer Files
Population density?82.5 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$69,713American Community Survey 2020-2024 5-Year Estimates
Median home value$327,000American Community Survey 2020-2024 5-Year Estimates
Median age58.2American Community Survey 2020-2024 5-Year Estimates
Households5,701American Community Survey 2020-2024 5-Year Estimates
Housing units7,496American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-174
59 births, 233 deaths
Net migration
+200
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Lancaster County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Middlesex CountyVirginia35 mi10,841
Northumberland CountyVirginia29 mi12,557
Richmond CountyVirginia13 mi9,294
Accomack CountyVirginia6.1 mi33,859
Essex CountyVirginiaa single point10,654

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 133 counties and independent cities of Virginia

Open the interactive Virginia county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.