County Maps US

Lancaster County, South Carolina

A county in South Carolina, ranked 15 of 46 by population.

CountyFIPS 45057

Within South Carolina
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
114,296
+17,707 (+18.3%) since 2020
Land area
549.2
square miles. A further 1.1% of the total area is water
Population density
208
people per square mile, computed rather than published
County seat
Lancaster
Seat of county government.
Established
1798
227 years ago
Largest city
Lancaster city
Population 9,623.

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, South Carolina 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 561 by 800 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 46 counties of South Carolina, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn South CarolinaNationally
Population114,29615th of 46565th of 3,144
Land area549.2 sq mi30th of 461,902nd of 3,144
Population density208 per sq mi13th of 46553rd of 3,144
Median household income$78,8695th of 46630th 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
Population114,296Vintage 2025 Population Estimates
Population in 202096,589Vintage 2025 Population Estimates
2020 estimates base?96,012Vintage 2025 Population Estimates
Land area549.2 sq mi2025 Gazetteer Files
Water area6.1 sq mi2025 Gazetteer Files
Total area555.2 sq mi2025 Gazetteer Files
Population density?208 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$78,869American Community Survey 2020-2024 5-Year Estimates
Median home value$329,900American Community Survey 2020-2024 5-Year Estimates
Median age42.5American Community Survey 2020-2024 5-Year Estimates
Households40,128American Community Survey 2020-2024 5-Year Estimates
Housing units43,832American 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
+338
1,518 births, 1,180 deaths
Net migration
+2,672
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 7 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
Kershaw CountySouth Carolina51 mi73,166
Union CountyNorth Carolina27 mi267,674
York CountySouth Carolina24 mi306,887
Chesterfield CountySouth Carolina23 mi44,740
Chester CountySouth Carolina22 mi33,001
Fairfield CountySouth Carolina6.8 mi20,340
Mecklenburg CountyNorth Carolina6.4 mi1,233,383

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

All 46 counties of South Carolina

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

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