County Maps US

Rockwall County, Texas

A county in Texas, ranked 36 of 254 by population.

CountyFIPS 48397

Within Texas
Rockwall County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Rockwall, the county seat, located via the 2025 Census Gazetteer.

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Population
140,738
+31,539 (+28.9%) since 2020
Land area
127.2
square miles. A further 14.6% of the total area is water
Population density
1,106
people per square mile, computed rather than published
County seat
Rockwall
Seat of county government.
Established
1873
152 years ago
Largest city
Rockwall city
Population 53,980.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Rockwall County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Rockwall County, Texas from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 737 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Rockwall County ranks

Position among the 254 counties of Texas, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn TexasNationally
Population140,73836th of 254481st of 3,144
Land area127.2 sq mi254th of 2543,077th of 3,144
Population density1,106 per sq mi9th of 254148th of 3,144
Median household income$127,9811st of 25435th of 3,143

Full data for Rockwall County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population140,738Vintage 2025 Population Estimates
Population in 2020109,199Vintage 2025 Population Estimates
2020 estimates base?107,884Vintage 2025 Population Estimates
Land area127.2 sq mi2025 Gazetteer Files
Water area21.7 sq mi2025 Gazetteer Files
Total area148.9 sq mi2025 Gazetteer Files
Population density?1,106 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$127,981American Community Survey 2020-2024 5-Year Estimates
Median home value$415,500American Community Survey 2020-2024 5-Year Estimates
Median age37.5American Community Survey 2020-2024 5-Year Estimates
Households41,237American Community Survey 2020-2024 5-Year Estimates
Housing units43,580American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
+666
1,504 births, 838 deaths
Net migration
+3,231
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 4 areas bordering Rockwall County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Kaufman CountyTexas15 mi209,235
Collin CountyTexas13 mi1,297,179
Dallas CountyTexas12 mi2,661,397
Hunt CountyTexas9.6 mi123,336

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 254 counties of Texas

Open the interactive Texas county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.