Map of Rockwall County, Texas

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.

Rockwall County is part of the Dallas-Fort Worth–Arlington metropolitan statistical area. It was one of the top 25 fastest-growing counties in the U.S. in 2010. Rockwall County is listed as the sixth-wealthiest county in Texas.

Cities in Rockwall county include Rockwall, Heath, Royse City, Fate, McClendon-Chisholm, Mobile City, and part of Rowlett.

Rockwall County overview:
Name:	Rockwall County
FIPS code:	48-397
State:	Texas
Founded:	1873
Named for:	Rockwall, Texas, named in turn for its clastic dikes
Seat:	Rockwall
Largest city:	Dallas
Total Area:	149 sq mi (390 km²)
Land Area:	127 sq mi (330 km²)
Total Population:	107,819
Population Density:	720/sq mi (280/km²)
Time zone:	UTC−6 (Central)
Summer Time Zone (DST):	UTC−5 (CDT)
Website:	www.rockwallcountytexas.com

Rockwall County location map. Where is Rockwall County?

Rockwall County location on the U.S. Map. Where is Rockwall County. — Location of Rockwall County in the the United States.

Rockwall County location on the Texas map. Where is Rockwall County. — Location of Rockwall County in Texas.

History

Rockwall County was formed in 1873 from portions of Kaufman County. It split off because access to the county seat of Kaufman was inconvenient. It was named for its county seat, Rockwall. Rockwall County also is home to the great rock wall, which is no longer in public view today.

Rockwall County Road Map

Rockwall CountyStreet Map. — Street map of Rockwall County, Texas. Source: OpenStreetMap (OSM)

Rockwall CountyMap — Rockwall Countypolitical map.

Geography

According to the U.S. Census Bureau, the county has an area of 149 square miles (390 km), of which 127 square miles (330 km) are land and 22 square miles (57 km) (15%) are covered by water. It is the smallest county by area in Texas.