County Maps US

Aiken County, South Carolina

A county in South Carolina, ranked 11 of 46 by population.

CountyFIPS 45003

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

Download SVGFull South Carolina map downloads

Population
181,515
+12,345 (+7.3%) since 2020
Land area
1,071
square miles. A further 0.9% of the total area is water
Population density
170
people per square mile, computed rather than published
County seat
Aiken
Seat of county government.
Established
1871
154 years ago
Largest city
Aiken city
Population 33,808.

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 Aiken 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 Aiken 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 800 by 791 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 Aiken 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
Population181,51511th of 46387th of 3,144
Land area1,071 sq mi4th of 46601st of 3,144
Population density170 per sq mi15th of 46629th of 3,144
Median household income$70,60910th of 461,156th of 3,143

Full data for Aiken County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population181,515Vintage 2025 Population Estimates
Population in 2020169,170Vintage 2025 Population Estimates
2020 estimates base?168,810Vintage 2025 Population Estimates
Land area1,071 sq mi2025 Gazetteer Files
Water area9.5 sq mi2025 Gazetteer Files
Total area1,080 sq mi2025 Gazetteer Files
Population density?170 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$70,609American Community Survey 2020-2024 5-Year Estimates
Median home value$218,000American Community Survey 2020-2024 5-Year Estimates
Median age42.0American Community Survey 2020-2024 5-Year Estimates
Households69,916American Community Survey 2020-2024 5-Year Estimates
Housing units80,008American 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
+415
2,558 births, 2,143 deaths
Net migration
+2,752
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 Aiken 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
Richmond CountyGeorgia46 mi206,559
Lexington CountySouth Carolina42 mi317,588
Barnwell CountySouth Carolina30 mi20,653
Edgefield CountySouth Carolina28 mi29,808
Orangeburg CountySouth Carolina16 mi83,177
Burke CountyGeorgia8.9 mi24,408
Saluda CountySouth Carolina6.3 mi19,680

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.