Houston is a city in Matanuska-Susitna Borough, Alaska, United States. It is part of the Anchorage, Alaska Metropolitan Statistical Area. It is loc…Houston is a city in Matanuska-Susitna Borough, Alaska, United States. It is part of the Anchorage, Alaska Metropolitan Statistical Area. It is located roughly 33 miles from downtown Anchorage, though it is a 57-mile drive between the two points. The population was 1,975 at the 2020 census, up from 1,912 in 2000.