County Maps US

Lamar County, Mississippi

A county in Mississippi, ranked 10 of 82 by population.

CountyFIPS 28073

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

Download SVGFull Mississippi map downloads

Population
67,403
+3,012 (+4.7%) since 2020
Land area
496.6
square miles. A further 0.7% of the total area is water
Population density
136
people per square mile, computed rather than published
County seat
Purvis
Seat of county government.
Established
1904
121 years ago
Largest city
Hattiesburg city
Population 6,811 for the whole place, which extends beyond this county.

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 Lamar 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 Lamar 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 500 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 Lamar 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
Population67,40310th of 82814th of 3,144
Land area496.6 sq mi50th of 822,097th of 3,144
Population density136 per sq mi9th of 82743rd of 3,144
Median household income$70,9094th of 821,132nd of 3,143

Full data for Lamar County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population67,403Vintage 2025 Population Estimates
Population in 202064,391Vintage 2025 Population Estimates
2020 estimates base?64,218Vintage 2025 Population Estimates
Land area496.6 sq mi2025 Gazetteer Files
Water area3.4 sq mi2025 Gazetteer Files
Total area500 sq mi2025 Gazetteer Files
Population density?136 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$70,909American Community Survey 2020-2024 5-Year Estimates
Median home value$224,700American Community Survey 2020-2024 5-Year Estimates
Median age37.7American Community Survey 2020-2024 5-Year Estimates
Households25,381American Community Survey 2020-2024 5-Year Estimates
Housing units27,685American 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
+218
759 births, 541 deaths
Net migration
+265
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 5 areas bordering Lamar 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
Forrest CountyMississippi35 mi79,034
Marion CountyMississippi30 mi24,001
Pearl River CountyMississippi23 mi59,363
Covington CountyMississippi8.0 mi17,898
Jefferson Davis CountyMississippi4.0 mi10,941

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.