Rockwall County, Texas
County seat: Rockwall · Population 140,738 (2025) · 127 sq mi
Rockwall County is the 36th most populous of Texas's 254 counties, with 140,738 people (2025 estimate). Its county seat is Rockwall. It is part of the Metroplex region, one of the 12 Texas Comptroller economic regions. The map shows its 9 cities and towns and the 4 neighboring counties.
Rockwall County facts
- County seat
- Rockwall
- Population (2025 estimate)
- 140,738 +30.5% since 2020
- Land area
- 127 sq mi 254th largest of 254
- Water area
- 22 sq mi
- Population density
- 1,106 per sq mi
- Established
- 1873
- Named after
- Rockwall city in and county seat of Rockwall County, Texas, United States
- Largest city
- Rockwall 53,980
- Median household income
- $127,981
- Cities and towns
- 9
- ZIP codes
- 9
- Time zone
- Central
- FIPS code
- 48397
Cities and towns in Rockwall County
Rockwall County has 9 incorporated cities, towns and villages. Populations count the people living inside Rockwall County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Rockwall (county seat) | City | 53,980 | |
| Fate | City | 29,007 | |
| Royse City | City | 18,933 | Collin and Hunt counties |
| Heath | City | 11,638 | Kaufman County |
| Rowlett | City | 8,434 | Dallas County |
| McLendon-Chisholm | City | 5,629 | Kaufman County |
| Wylie | City | 1,660 | Collin and Dallas counties |
| Mobile City | City | 172 | |
| Dallas | City | 5 | Collin, Dallas, Denton and Kaufman counties |
ZIP codes in Rockwall County
9 ZIP codes reach into Rockwall County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 75032
- 75087 also Collin County
- 75088 also Dallas County
- 75089 also Dallas County
- 75098 also Collin and Dallas counties
- 75126 also Kaufman County
- 75132
- 75160 also Kaufman and Hunt counties
- 75189 also Hunt and Collin counties
Population of Rockwall County, 2020–2025
Rockwall County grew by 32,854 people (+30.5%) between April 2020 and July 2025: 2,818 more births than deaths and a net gain of 30,163 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 109,199 |
| 2021 | 116,645 |
| 2022 | 123,439 |
| 2023 | 131,418 |
| 2024 | 136,880 |
| 2025 | 140,738 |
Neighboring counties
- Kaufman County south · 209,235 people
- Collin County northwest · 1,297,179 people
- Dallas County southwest · 2,661,397 people
- Hunt County northeast · 123,336 people
Printable Rockwall County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (127 KB)
- PNG (2400 px) (60 KB)
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Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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