Rockwall County is a county in the U.S. state of Texas. At 149 square miles, Rockwall County has the smallest area of any Texas county. Per the 2020 Census, its population was 107,819. Its county seat is Rockwall. The county and city are named for a wall-like subterranean rock formation that runs throughout the county.
Country: United States
State: Texas
Founded: 1873
Named for: Rockwall, Texas, named in turn for its clastic dikes
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