County Maps US

Martin County, North Carolina

A county in North Carolina, ranked 78 of 100 by population.

CountyFIPS 37117

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

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Population
21,601
-353 (-1.6%) since 2020
Land area
456.4
square miles. A further 0.1% of the total area is water
Population density
47.3
people per square mile, computed rather than published
County seat
Williamston
Seat of county government.
Established
1774
251 years ago
Largest city
Williamston town
Population 5,086.

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 Martin 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 Martin County, North 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 646 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 Martin County ranks

Position among the 100 counties of North Carolina, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn North CarolinaNationally
Population21,60178th of 1001,742nd of 3,144
Land area456.4 sq mi51st of 1002,244th of 3,144
Population density47.3 per sq mi86th of 1001,529th of 3,144
Median household income$48,57889th of 1002,852nd of 3,143

Full data for Martin County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population21,601Vintage 2025 Population Estimates
Population in 202021,954Vintage 2025 Population Estimates
2020 estimates base?22,034Vintage 2025 Population Estimates
Land area456.4 sq mi2025 Gazetteer Files
Water area0.29 sq mi2025 Gazetteer Files
Total area456.7 sq mi2025 Gazetteer Files
Population density?47.3 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$48,578American Community Survey 2020-2024 5-Year Estimates
Median home value$109,700American Community Survey 2020-2024 5-Year Estimates
Median age46.8American Community Survey 2020-2024 5-Year Estimates
Households9,502American Community Survey 2020-2024 5-Year Estimates
Housing units11,058American 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
-163
213 births, 376 deaths
Net migration
+205
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 Martin 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
Bertie CountyNorth Carolina69 mi17,086
Beaufort CountyNorth Carolina21 mi44,670
Washington CountyNorth Carolina16 mi10,638
Pitt CountyNorth Carolina14 mi182,936
Edgecombe CountyNorth Carolina14 mi49,121
Halifax CountyNorth Carolina6.4 mi46,534

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

All 100 counties of North Carolina

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

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