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Rockwall is a city in North Texas and the county seat of Rockwall County, located on the eastern shore of Lake Ray Hubbard about 20 miles northeast of Dallas.

Rockwall was officially platted on April 17, 1854, and it takes its name from a naturally jointed, wall-like subterranean rock formation that pioneer T. U. Wade uncovered while digging a well, which looks like an artificial wall buried underground.

Rockwall is the seat of Rockwall County, created in 1873 from Kaufman County, which at roughly 147 square miles is the smallest county in Texas by area.

Rockwall grew up along the National Road of the Republic of Texas, built in the 1840s to connect the Red River to the Dallas area, where the road crossed the East Fork of the Trinity River.

Rockwall was transformed in 1969 when Lake Ray Hubbard was created by damming the East Fork of the Trinity River, shifting the town's economy toward recreation, tourism, and lakefront living anchored by The Harbor waterfront district and its lighthouse.

Rockwall counted 47,251 residents in the 2020 census, and the Census Bureau estimated its population had climbed to about 53,980 by 2025, making it one of the faster-growing cities in the Dallas-Fort Worth Metroplex.

Rockwall has about 18,273 households according to Census Bureau figures for 2020-2024, with an owner-occupied housing rate of 72.5%, about 2.78 persons per household, and a median owner-occupied home value of $411,700.

Rockwall has been a Texas Main Street Community since 2009 and was designated a Preserve America Community in 2015, with façade grants helping preserve its historic downtown square.