Rockwall County enjoyed explosive growth during the first few years of the twenty first century. According to the U.S. Census Bureau estimates Rockwall County is the third fastest growing county in America based on percent of growth between January 2000 and July 2006 for all counties that began the century with more than ten thousand residents.

The county was founded in 1873 because access to the county seat of Kaufman County, of which county the area was then a part, was inconvenient for the residents of what became Rockwall County. Today, both Rockwall and Kaufman counties are in the top 50 fastest growing counties of the 21st Century.

The population spurt of the last six years has made Rockwall County the fastest growing county in the Lone Star State of Texas and the third fastest in the nation.

Although no figures are available to determine how the growth may have affected the price of homes in the area, in the year 2000 the median cost for a home within the 129 square mile jurisdiction was $147,100.