La Marque is a city in Galveston County, Texas, United States, south of Houston. The city population in 2020 was 18,030. La Marque experienced considerable growth in the 1950s, during which the city provided a general administrative and trades and crafts workforce helping to support the petrochemical complex in adjoining Texas City. It is the hometown of U.S. Senator Kay Bailey Hutchison and Norman Bulaich.