Washington County, Texas
County seat: Brenham · Population 38,288 (2025) · 604 sq mi
Washington County is the 86th most populous of Texas's 254 counties, with 38,288 people (2025 estimate). Its county seat is Brenham. It is part of the Central Texas region, one of the 12 Texas Comptroller economic regions. The map shows its 2 cities and towns and the 7 neighboring counties.
Washington County facts
- County seat
- Brenham
- Population (2025 estimate)
- 38,288 +7% since 2020
- Land area
- 604 sq mi 228th largest of 254
- Water area
- 18 sq mi
- Population density
- 63 per sq mi
- Established
- 1836
- Named after
- George Washington Founding Father and first U.S. president (1732–1799)
- Largest city
- Brenham 19,957
- Median household income
- $77,825
- Cities and towns
- 2
- ZIP codes
- 7
- Time zone
- Central
- FIPS code
- 48477
Cities and towns in Washington County
Washington County has 2 incorporated cities, towns and villages. Populations count the people living inside Washington County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Brenham (county seat) | City | 19,957 | |
| Burton | City | 288 |
ZIP codes in Washington County
7 ZIP codes reach into Washington County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 77426 also Austin County
- 77833 also Austin County
- 77835 also Austin County
- 77868 also Grimes, Brazos and Waller counties
- 77880
- 78932 also Fayette County
- 78946 also Lee and Fayette counties
Population of Washington County, 2020–2025
Washington County grew by 2,493 people (+7%) between April 2020 and July 2025: 512 more deaths than births and a net gain of 2,925 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 35,791 |
| 2021 | 35,925 |
| 2022 | 36,371 |
| 2023 | 37,244 |
| 2024 | 37,683 |
| 2025 | 38,288 |
Neighboring counties
- Austin County south · 33,625 people
- Burleson County northwest · 20,549 people
- Waller County southeast · 69,858 people
- Lee County west · 18,729 people
- Fayette County southwest · 25,459 people
- Brazos County north · 249,088 people
- Grimes County northeast · 34,252 people
Printable Washington 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) (147 KB)
- PNG (2400 px) (80 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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