County Maps US

Alcorn County, Mississippi

A county in Mississippi, ranked 22 of 82 by population.

CountyFIPS 28003

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

Download SVGFull Mississippi map downloads

Population
34,569
-163 (-0.5%) since 2020
Land area
400
square miles. A further 0.3% of the total area is water
Population density
86.4
people per square mile, computed rather than published
County seat
Corinth
Seat of county government.
Established
1870
155 years ago
Largest city
Corinth city
Population 14,345.

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 Alcorn 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 Alcorn County, Mississippi 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 541 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 Alcorn County ranks

Position among the 82 counties of Mississippi, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn MississippiNationally
Population34,56922nd of 821,323rd of 3,144
Land area400 sq mi82nd of 822,529th of 3,144
Population density86.4 per sq mi17th of 821,024th of 3,144
Median household income$51,26034th of 822,703rd of 3,143

Full data for Alcorn County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population34,569Vintage 2025 Population Estimates
Population in 202034,732Vintage 2025 Population Estimates
2020 estimates base?34,742Vintage 2025 Population Estimates
Land area400 sq mi2025 Gazetteer Files
Water area1.3 sq mi2025 Gazetteer Files
Total area401.4 sq mi2025 Gazetteer Files
Population density?86.4 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$51,260American Community Survey 2020-2024 5-Year Estimates
Median home value$142,100American Community Survey 2020-2024 5-Year Estimates
Median age40.0American Community Survey 2020-2024 5-Year Estimates
Households14,456American Community Survey 2020-2024 5-Year Estimates
Housing units16,283American 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
-65
382 births, 447 deaths
Net migration
+18
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 Alcorn 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
McNairy CountyTennessee23 mi26,236
Tippah CountyMississippi22 mi21,389
Prentiss CountyMississippi20 mi25,284
Tishomingo CountyMississippi17 mi18,639
Hardeman CountyTennessee2.1 mi25,274
Hardin CountyTennessee1.0 mi27,983

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

All 82 counties of Mississippi

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

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