Pattison is a city in Waller County, Texas, United States. As of the 2020 census, the population was 547. Pattison is located at 29°49′10″N 95…Pattison is a city in Waller County, Texas, United States. As of the 2020 census, the population was 547. Pattison is located at 29°49′10″N 95°59′0″W / 29.81944°N 95.98333°W. According to the United States Census Bureau, the city has a total area of 3.2 square miles, all land.