Washington County
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Washington County, Texas
Washington County is in the Blackland Prairies region of southeast central Texas. The center of the county is at 30°14' north latitude and 96°24' west longitude. Brenham, the seat of government, is near the county's center and seventy-five air miles east of Austin. The county was named for George Washington, the first president of the United States. Washington County encompasses 611 square miles of gently rolling land with elevations ranging between 200 to 500 feet above sea level. Sloping generally southeasterly, the area drains into the Brazos River, which runs along the eastern border. Other prominent streams include New Year's Creek, East Fork Mill Creek, Doe Run Creek, Wolf Creek, and Yegua Creek, which forms the county's northern border. Soils along the Brazos River are brownish to reddish, cracking and clayey or loamy; in most of the rest of the county, shallow to deep clayey soils cover a bed of chalk. Subterranean water reservoirs include the Catahoula, Oakville, and Lagarto formations. Washington County, located in the post oak belt, is well timbered, and elms, ashes, hackberries, hickories, pecans, cottonwoods, red cedar, mulberry, and other trees grow in its forests. The county's climate is subtropical and humid, with an average annual precipitation of forty inches. Temperatures range from an average low of 39° F in January to an average high of 96° F in July; the growing season lasts 277 days. The principle mineral resources include oil, natural gas, lignite, brick clay, salt and sulphur. The county is linked to the rest of the state by U.S. Highway 290, which crosses east to west, and by the Burlington Northern Santa Fe Railroad, which runs north-south.
Adapted from the official Handbook of Texas, a state encyclopedia developed by the Texas State Historical Association (TSHA). It is an authoritative source of trusted historical records.
James L. Hailey, John Leffler | © Texas State Historical Association
Washington County at a Glance
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County Map of Texas
Washington County
- Washington County
Currently Exists
Yes
Place type
Washington County is classified as a County
Altitude Range
150 ft – 560 ft
Places of Washington County
Photos of Washington County and surrounding areas
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Washington County, Texas
The Washington County Courthouse is located in Brenham, Texas. Photograph by Renelibrary.

Washington County, Texas
Map of Washington County, Texas. Map Credit: Robert Plocheck.

Brenham, Texas
Historic Aereal Map of Brenham, Texas from 1873. Brenham is the seat of Washington County, Texas. Photograph Credit: Augustus Koch via Wikipedia. Brenham
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Cormorants on Somerville Lake
Photo by Beverly Moseley, USDA NRCS Texas, Public Domain Somerville Lake

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Washington County by the Numbers
Population & Civilian Labor Counts
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Population Counts
Washington County
Pop. | Year | Source |
---|---|---|
35,882 | 2019 | United States Census Bureau |
Civilian Labor Counts
Washington County
People | Year | Source |
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14,645 | 2019 | Texas Workforce Commission |
Per Capita Income
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Per Capita Income (USD) | Year | Source |
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$52,265 | 2019 | U.S. Bureau of Economic Analysis |
Property Values, Retail Sales, and Wages
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Property Values
Washington County
USD ($) | Year | Source |
---|---|---|
6,929,801,168 | 2019 | State Property Tax Board |
Retail Sales
Washington County
USD ($) | Year | Source |
---|---|---|
536,144,558 | 2019 | State Comptroller of Public Accounts |
Wages
Washington County
USD ($) | Year | Source |
---|---|---|
167,888,485 | 2019 | Texas Workforce Commission |
Unemployment
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Unemployment Percentage | Year | Source |
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6.5 | 2019 | Texas Workforce Commission |
Rainfall
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Rainfall (inches) | Year | Source |
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45.1 | 2019 | National Oceanic and Atmospheric Administration |
Temperature Ranges
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Min. (January Average, °F) | Max. (July Average, °F) | Year | Source |
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39.0 | 94.2 | 2019 | National Oceanic and Atmospheric Administration |
Land Area & Total Area
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Land Area
Washington County
Area (square miles) | Year | Source |
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604.0 | 2019 | United States Census Bureau |
Total Area
Washington County
Area (square miles) | Year | Source |
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621.8 | 2019 | United States Census Bureau |