County Maps US

Brazoria County, Texas

A county in Texas, ranked 14 of 254 by population.

CountyFIPS 48039

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

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Population
419,080
+45,590 (+12.2%) since 2020
Land area
1,363
square miles. A further 15.3% of the total area is water
Population density
307
people per square mile, computed rather than published
County seat
Angleton
Seat of county government.
Established
1836
189 years ago
Largest city
Pearland city
Population 115,821 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 Brazoria 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 Brazoria County, Texas 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 744 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 Brazoria County ranks

Position among the 254 counties of Texas, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn TexasNationally
Population419,08014th of 254183rd of 3,144
Land area1,363 sq mi27th of 254440th of 3,144
Population density307 per sq mi23rd of 254429th of 3,144
Median household income$97,99313th of 254183rd of 3,143

Full data for Brazoria County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population419,080Vintage 2025 Population Estimates
Population in 2020373,490Vintage 2025 Population Estimates
2020 estimates base?372,046Vintage 2025 Population Estimates
Land area1,363 sq mi2025 Gazetteer Files
Water area245.3 sq mi2025 Gazetteer Files
Total area1,609 sq mi2025 Gazetteer Files
Population density?307 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$97,993American Community Survey 2020-2024 5-Year Estimates
Median home value$301,600American Community Survey 2020-2024 5-Year Estimates
Median age36.7American Community Survey 2020-2024 5-Year Estimates
Households133,898American Community Survey 2020-2024 5-Year Estimates
Housing units150,321American 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
+1,803
4,649 births, 2,846 deaths
Net migration
+5,877
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 Brazoria 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
Matagorda CountyTexas62 mi36,463
Fort Bend CountyTexas48 mi975,191
Galveston CountyTexas39 mi372,207
Harris CountyTexas18 mi5,045,026
Wharton CountyTexas3.3 mi42,060

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

Side by side

All 254 counties of Texas

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

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