Popuplation 32,269 Total Area 58.09 (22.43 mi²) Median Household Income $207,917 Poverty Rate1.99% Southlake Tx Population. (2019-05-12). Retrieved 2019-12-22, from http://worldpopulationreview.com/us-cities/southlake-tx/ * Photo Markers Construction: Street Photos: Invalid Request Website Latest Southlake Posts 2019-12-13