Washington County, TX ZIP Codes & Directory
Complete postal guide for Washington County, Texas. Featuring the official county seat of Brenham, largest municipality Brenham, and serving 2 incorporated municipal entities.
Municipalities Located in Washington County
Incorporated Cities, Towns, and Villages
Active USPS Postal Codes in Washington County
Standard delivery zones and geographic service boundaries
Frequently Asked Questions About Washington County, TX
What is the county seat and largest city in Washington County? ▾
The official county seat of Washington County is Brenham, and its largest incorporated municipality by population is Brenham.
How many cities, towns, and villages are in Washington County? ▾
Washington County encompasses 2 incorporated municipal entities, including 2 cities, 0 towns, and 0 villages.
What is the total population and land area of Washington County? ▾
According to official U.S. Census Bureau data, Washington County has a population of approximately 35,805 residents and spans an area of 609 square miles.
How many postal codes operate in Washington County? ▾
There are 1 active USPS postal codes serving addresses within Washington County, Texas.