County Maps US

McDuffie County, Georgia

A county in Georgia, ranked 84 of 159 by population.

CountyFIPS 13189

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

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Population
21,640
+31 (+0.1%) since 2020
Land area
257.4
square miles. A further 3.3% of the total area is water
Population density
84.1
people per square mile, computed rather than published
County seat
Thomson
Seat of county government.
Established
1870
155 years ago
Largest city
Thomson city
Population 6,763.

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 McDuffie 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 McDuffie County, Georgia 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 692 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 McDuffie County ranks

Position among the 159 counties of Georgia, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn GeorgiaNationally
Population21,64084th of 1591,740th of 3,144
Land area257.4 sq mi117th of 1592,891st of 3,144
Population density84.1 per sq mi69th of 1591,038th of 3,144
Median household income$56,73388th of 1592,357th of 3,143

Full data for McDuffie County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population21,640Vintage 2025 Population Estimates
Population in 202021,609Vintage 2025 Population Estimates
2020 estimates base?21,628Vintage 2025 Population Estimates
Land area257.4 sq mi2025 Gazetteer Files
Water area8.9 sq mi2025 Gazetteer Files
Total area266.3 sq mi2025 Gazetteer Files
Population density?84.1 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$56,733American Community Survey 2020-2024 5-Year Estimates
Median home value$170,200American Community Survey 2020-2024 5-Year Estimates
Median age38.9American Community Survey 2020-2024 5-Year Estimates
Households8,149American Community Survey 2020-2024 5-Year Estimates
Housing units9,510American 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
-49
233 births, 282 deaths
Net migration
-55
More people moved out than moved in.

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

The 6 areas bordering McDuffie 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
Warren CountyGeorgia31 mi5,269
Columbia CountyGeorgia29 mi169,189
Wilkes CountyGeorgia22 mi9,540
Lincoln CountyGeorgia4.9 mi8,112
Richmond CountyGeorgia4.5 mi206,559
Jefferson CountyGeorgia1.8 mi15,011

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

All 159 counties of Georgia

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

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