According to the United States Census Bureau, the city has a total area of 1.5square miles (3.9Square kilometers).None of the area is covered with water. Most land development within Waller is located near the historic town Center, however; businesses oriented toward travelers are beginning to locate along the U.S. Highway 290 corridor. Waller is a city in Texas, United States, partly in Waller County and partly in Harris County within the HoustonSugar LandBaytown metropolitan area. The population was 2,092 at the 2000 census. The Waller area is located along U.S. Highway 290 (Northwest Freeway) forty-one miles (66km) northwest of Downtown Houston.