Waller County is a county in the U.S. state of Texas. As of the 2010 census, the population was 43,205. Its county seat is Hempstead. The county was named for Edwin Waller, a signer of the Texas Declaration of Independence and first mayor of Austin.Waller County is included in the Houston-The Woodlands-Sugar Land, TX Metropolitan Statistical Area.GeographyAccording to the U.S. Census Bureau, the county has a total area of, of which is land and (0.8%) is water.Adjacent countiesGrimes County (north)Montgomery County (northeast)Harris County (east)Fort Bend County (south)Austin County (west)Washington County (northwest)
