County · Texas

Rockwall County

Rockwall County is a county in the U.S. state of Texas. As of the 2020 census, its population was 107,819; it was estimated to be 140,738 in 2025. Its county seat is Rockwall and both the county and city are named for a wall-like subterranean rock formation that runs throughout the county. Rockwall County is part of the Dallas–Fort Worth–Arlington metropolitan statistical area. It was one of the 25 fastest-growing counties in the U.S. in 2009. Rockwall County is listed as the wealthiest county in Texas and the 17th-wealthiest in the United States by median household income. Cities in Rockwall County include Rockwall, Heath, Royse City, Fate, McClendon-Chisholm, Mobile City, and part of Rowlett.

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Commissioners Court Primary
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Cities and towns 6

Reference data (Census of Governments 2022)

Census ID (PID6): 175936
FIPS state: 48
FIPS county: 397
FIPS place: 99397
Census record name: COUNTY OF ROCKWALL
Mailing address: 101 E RUSK ST, ROCKWALL 75087