Brenham is a city in east-central Texas in Washington County, Texas, United States, with a population of 16,147 according to the 2009 census. It is the county seat of Washington County. Brenham is south of College Station, and about halfway between Houston and Austin.Brenham is renowned as the heart of the bluebonnet region in Central Texas. The local chamber of commerce promotes the Bluebonnet Trails and offers free maps to guide visitors along the most scenic routes that also pass by historic sites and attractions.As the county seat for Washington County, the county is also home of the "Birthplace of Texas," the site of the signing of the Texas Declaration of Independence on March 2, 1836 in the town of Washington. A TPWD State Historic Park is now located at the site.Brenham is also known for a German heritage festival that takes place each May called Maifest, similar to Volksfest.