County Maps US

Bastrop County, Texas

A county in Texas, ranked 42 of 254 by population.

CountyFIPS 48021

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

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Population
118,908
+20,848 (+21.3%) since 2020
Land area
888.2
square miles. A further 0.8% of the total area is water
Population density
134
people per square mile, computed rather than published
County seat
Bastrop
Seat of county government.
Established
1836
189 years ago
Largest city
Bastrop city
Population 13,383.

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 Bastrop 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 Bastrop 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 696 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 Bastrop 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
Population118,90842nd of 254542nd of 3,144
Land area888.2 sq mi163rd of 254895th of 3,144
Population density134 per sq mi42nd of 254749th of 3,144
Median household income$86,22626th of 254397th of 3,143

Full data for Bastrop County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population118,908Vintage 2025 Population Estimates
Population in 202098,060Vintage 2025 Population Estimates
2020 estimates base?97,229Vintage 2025 Population Estimates
Land area888.2 sq mi2025 Gazetteer Files
Water area7.3 sq mi2025 Gazetteer Files
Total area895.6 sq mi2025 Gazetteer Files
Population density?134 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$86,226American Community Survey 2020-2024 5-Year Estimates
Median home value$314,800American Community Survey 2020-2024 5-Year Estimates
Median age37.0American Community Survey 2020-2024 5-Year Estimates
Households36,868American Community Survey 2020-2024 5-Year Estimates
Housing units39,706American 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
+677
1,531 births, 854 deaths
Net migration
+2,325
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 Bastrop 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
Lee CountyTexas33 mi18,729
Travis CountyTexas30 mi1,389,670
Caldwell CountyTexas28 mi55,150
Fayette CountyTexas25 mi25,459
Williamson CountyTexas2.4 mi752,827

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.