County Maps US

Galveston County, Texas

A county in Texas, ranked 16 of 254 by population.

CountyFIPS 48167

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

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Population
372,207
+20,621 (+5.9%) since 2020
Land area
379.4
square miles. A further 56.6% of the total area is water
Population density
981
people per square mile, computed rather than published
County seat
Galveston
Seat of county government.
Established
1838
187 years ago
Largest city
League City city
Population 117,255 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 Galveston 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 Galveston 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 800 by 574 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 Galveston 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
Population372,20716th of 254209th of 3,144
Land area379.4 sq mi244th of 2542,606th of 3,144
Population density981 per sq mi10th of 254164th of 3,144
Median household income$86,10527th of 254400th of 3,143

Full data for Galveston County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population372,207Vintage 2025 Population Estimates
Population in 2020351,586Vintage 2025 Population Estimates
2020 estimates base?350,682Vintage 2025 Population Estimates
Land area379.4 sq mi2025 Gazetteer Files
Water area494.5 sq mi2025 Gazetteer Files
Total area874 sq mi2025 Gazetteer Files
Population density?981 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$86,105American Community Survey 2020-2024 5-Year Estimates
Median home value$314,600American Community Survey 2020-2024 5-Year Estimates
Median age38.8American Community Survey 2020-2024 5-Year Estimates
Households140,660American Community Survey 2020-2024 5-Year Estimates
Housing units161,868American 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
+707
3,931 births, 3,224 deaths
Net migration
+4,148
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 3 areas bordering Galveston 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
Chambers CountyTexas61 mi57,594
Brazoria CountyTexas39 mi419,080
Harris CountyTexas27 mi5,045,026

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

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.