Bastrop County, Texas
County seat: Bastrop · Population 118,908 (2025) · 888 sq mi
Bastrop County is the 42nd most populous of Texas's 254 counties, with 118,908 people (2025 estimate). Its county seat is Bastrop. It is part of the Capital region, one of the 12 Texas Comptroller economic regions. The map shows its 5 cities and towns and the 5 neighboring counties.
Bastrop County facts
- County seat
- Bastrop
- Population (2025 estimate)
- 118,908 +22.3% since 2020
- Land area
- 888 sq mi 163rd largest of 254
- Water area
- 7 sq mi
- Population density
- 134 per sq mi
- Established
- 1836
- Named after
- Felipe Enrique Neri Dutch businessman (1759-1827)
- Largest city
- Bastrop 13,383
- Median household income
- $86,226
- Cities and towns
- 5 plus 8 CDPs
- ZIP codes
- 15
- Time zone
- Central
- FIPS code
- 48021
Cities and towns in Bastrop County
Bastrop County has 5 incorporated cities, towns and villages. Populations count the people living inside Bastrop County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Bastrop (county seat) | City | 13,383 | |
| Elgin | City | 11,412 | Travis County |
| Smithville | City | 4,367 | |
| Austin | City | 0 | Hays, Travis and Williamson counties |
| Mustang Ridge | City | 0 | Caldwell and Travis counties |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Camp Swift | 8,239 | |
| Wyldwood | 4,934 | |
| Cedar Creek | 4,440 | |
| Circle D-KC Estates | 3,135 | |
| Rosanky | 1,695 | |
| McDade | 1,070 | |
| Red Rock | 436 | |
| Paige | 129 |
ZIP codes in Bastrop County
15 ZIP codes reach into Bastrop County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 78602
- 78612 also Travis County
- 78616 also Caldwell and Travis counties
- 78617 also Travis County
- 78621 also Travis, Williamson and Lee counties
- 78650 also Lee County
- 78653 also Travis County
- 78659 also Lee County
- 78662 also Caldwell County
- 78941 also Fayette, Gonzales and Lavaca counties
- 78942 also Lee and Fayette counties
- 78945 also Fayette and Lee counties
- 78953 also Caldwell County
- 78957 also Fayette County
- 78959 also Gonzales, Fayette and Caldwell counties
Population of Bastrop County, 2020–2025
Bastrop County grew by 21,679 people (+22.3%) between April 2020 and July 2025: 2,776 more births than deaths and a net gain of 18,899 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 98,060 |
| 2021 | 102,270 |
| 2022 | 106,581 |
| 2023 | 111,561 |
| 2024 | 115,937 |
| 2025 | 118,908 |
Neighboring counties
- Lee County northeast · 18,729 people
- Travis County northwest · 1,389,670 people
- Caldwell County southwest · 55,150 people
- Fayette County southeast · 25,459 people
- Williamson County northwest · 752,827 people
Printable Bastrop County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (148 KB)
- PNG (2400 px) (90 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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