Geography of Rockwall County
Much of Rockwall County's 149 square miles now functions as part of a larger metro area: its population of about 140,738 gives it a density well above the Texas county average.
It lies in the North Texas region at about 32.90° N, 96.41° W and is one of the 25 smallest counties in Texas (254th of 254 by area). Rockwall County shares boundaries with 4 other Texas counties, and the closest major cities are Dallas (about 24 miles away in a straight line) and Fort Worth (about 55 miles).
North Texas runs from the Dallas–Fort Worth Metroplex out to the Red River and the Rolling Plains. It mixes one of America's largest urban regions with wheat fields, cattle country and small towns that grew up along railroads.
For a broader view of how Rockwall County fits within the state, download our free Texas map with counties and cities PDF — a printable, high-resolution reference showing all 254 Texas counties labeled with their county seats.
Population & demographics
With approximately 140,738 residents across 149 square miles, Rockwall County has a population density of about 944.6 people per square mile. It ranks among the more densely populated counties in Texas — a clear sign of metropolitan urbanization.
County seat: Rockwall
Rockwall is the county seat of Rockwall County, sharing its name with the county itself. This is where the county courthouse stands and where residents go for property records, vehicle registration, marriage licenses, court cases and voter services handled by the county clerk, district clerk and tax assessor-collector. As the county has grown, some offices have added annex locations closer to newer suburbs.
History & name origin
Rockwall County was established in 1873 and was named for Its county seat, which was named for a submerged stone wall found by its initial settlers. It was carved from territory previously part of Kaufman County.
Rockwall County, Texas — frequently asked questions
Quick answers about Rockwall County geography, population, county seat, neighboring counties, and how to use the maps on this page. Figures are sourced from the U.S. Census Bureau; answers are written and reviewed by the Texas County Map team.
Where is Rockwall County, Texas located?+
Rockwall County is located in the North Texas region of Texas at approximately 32.898° N, 96.408° W. It is one of the 254 counties of Texas and carries U.S. Census FIPS code 48397. The interactive map on this page renders the official U.S. Census TIGER boundary for Rockwall County over real-world OpenStreetMap, Esri satellite, and topographic basemaps.
How big is Rockwall County in square miles?+
Rockwall County covers approximately 149 square miles of land in the North Texas region — a compact county by Texas standards. By land area it ranks 254th out of 254 Texas counties. The full bounding box of the county is rendered to scale on the interactive map and matches the U.S. Census TIGER 2023 polygon.
What is the population of Rockwall County, Texas?+
Rockwall County has a population of approximately 140,738 residents. With 149 square miles of land, that works out to a population density of about 944.6 people per square mile, which is densely populated for a Texas county. That makes Rockwall County the 36th most populous of the 254 counties in Texas.
What is the county seat of Rockwall County?+
Rockwall is the county seat of Rockwall County, Texas, which was organized in 1873 and named for Its county seat, which was named for a submerged stone wall found by its initial settlers. Rockwall County was originally carved out of Kaufman County. County government offices, courthouses, and most public records for Rockwall County are located in Rockwall.
Which Texas counties border Rockwall County?+
Rockwall County shares borders with Hunt, Dallas, Kaufman, and Collin counties. These 4 neighboring counties are highlighted on the schematic boundary map and linked at the bottom of this page so you can quickly compare population, area, and county seats across the North Texas region.
Where can I download or print a map of Rockwall County?+
Use the "Download PDF" button below the Rockwall County map on this page to save a letter-size PDF of the county boundary, neighboring counties and incorporated places, drawn from U.S. Census Bureau 2023 boundary files. The "Official TxDOT road map" button downloads the Texas Department of Transportation county road mapbook for Rockwall County. Both files are stored on this site and download directly. Our free Texas map with counties and cities PDF shows all 254 counties on one sheet.
What is the FIPS code for Rockwall County, Texas?+
The full 5-digit U.S. Census FIPS code for Rockwall County is 48397, made up of Texas state code 48 and the 3-digit county code 397. This is the same FIPS code used by the U.S. Census Bureau TIGER/Line files, the American Community Survey, and most federal datasets that key on county.