County Maps US

Horry County, South Carolina

The largest of South Carolina's 46 counties by land area.

CountyFIPS 45051

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

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Population
427,551
+73,777 (+20.9%) since 2020
Land area
1,133
square miles. A further 9.7% of the total area is water
Population density
377
people per square mile, computed rather than published
County seat
Conway
Seat of county government.
Established
1801
224 years ago
Largest city
Myrtle Beach city
Population 40,937.

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 Horry 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 Horry 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 728 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 Horry 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
Population427,5514th of 46179th of 3,144
Land area1,133 sq mi1st of 46554th of 3,144
Population density377 per sq mi7th of 46367th of 3,144
Median household income$66,88013th of 461,446th of 3,143

Full data for Horry County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population427,551Vintage 2025 Population Estimates
Population in 2020353,774Vintage 2025 Population Estimates
2020 estimates base?351,036Vintage 2025 Population Estimates
Land area1,133 sq mi2025 Gazetteer Files
Water area121.6 sq mi2025 Gazetteer Files
Total area1,255 sq mi2025 Gazetteer Files
Population density?377 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$66,880American Community Survey 2020-2024 5-Year Estimates
Median home value$287,700American Community Survey 2020-2024 5-Year Estimates
Median age48.7American Community Survey 2020-2024 5-Year Estimates
Households158,779American Community Survey 2020-2024 5-Year Estimates
Housing units217,419American 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
-1,801
3,383 births, 5,184 deaths
Net migration
+15,083
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 6 areas bordering Horry 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
Marion CountySouth Carolina70 mi28,242
Columbus CountyNorth Carolina34 mi50,487
Georgetown CountySouth Carolina28 mi65,912
Brunswick CountyNorth Carolina13 mi174,702
Dillon CountySouth Carolina8.6 mi27,458
Robeson CountyNorth Carolinaa single point119,941

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.