Cypress is an unincorporated community in Harris County, Texas, United States located completely inside the extraterritorial jurisdiction of the City of Houston. The Cypress area is located along U.S. Highway 290 is twenty-four miles northwest of Downtown Houston. The Cypress urban cluster ranks 50th in the top 100 highest-income urban areas in the United States.Large scale residential and commercial development beginning in the 1980s transformed the once rural area into one of the Houston area's largest suburban communities.