Rowlett is a city in Dallas and Rockwall Counties in Texas, United States, and an eastern suburb of Dallas. It is a growing, upscale community with nearly $1.5 billion in development in the Dallas–Fort Worth metroplex, located on Lake Ray Hubbard. The population was 62,535 at the 2020 census, and according to 2023 census estimates, the city is estimated to have a population of 66,813.