Aransas County, Texas
County seat: Rockport · Population 26,146 (2025) · 252 sq mi
Aransas County is the 101st most populous of Texas's 254 counties, with 26,146 people (2025 estimate). Its county seat is Rockport. It is part of the South Texas region, one of the 12 Texas Comptroller economic regions. The map shows its 4 cities and towns and the 4 neighboring counties.
Aransas County facts
- County seat
- Rockport
- Population (2025 estimate)
- 26,146 +9.7% since 2020
- Land area
- 252 sq mi 249th largest of 254
- Water area
- 276 sq mi
- Population density
- 104 per sq mi
- Established
- 1871
- Named after
- Aransas Bay bay in Texas, United States of America
- Largest city
- Rockport 11,348
- Median household income
- $69,466
- Cities and towns
- 4 plus 2 CDPs
- ZIP codes
- 5
- Time zone
- Central
- FIPS code
- 48007
Cities and towns in Aransas County
Aransas County has 4 incorporated cities, towns and villages. Populations count the people living inside Aransas County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Rockport (county seat) | City | 11,348 | |
| Fulton | Town | 1,647 | |
| Aransas Pass | City | 856 | Nueces and San Patricio counties |
| Corpus Christi | City | 0 | Kleberg, Nueces and San Patricio counties |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Lamar | 1,202 | |
| Holiday Beach | 427 |
ZIP codes in Aransas County
5 ZIP codes reach into Aransas County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 77950 also Refugio County
- 78336 also San Patricio and Nueces counties
- 78358
- 78382
- 78390 also San Patricio County
Population of Aransas County, 2020–2025
Aransas County grew by 2,318 people (+9.7%) between April 2020 and July 2025: 1,092 more deaths than births and a net gain of 3,415 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 23,930 |
| 2021 | 24,508 |
| 2022 | 24,963 |
| 2023 | 25,360 |
| 2024 | 25,686 |
| 2025 | 26,146 |
Neighboring counties
- Refugio County west · 6,657 people
- Calhoun County northeast · 19,599 people
- Nueces County southwest · 352,992 people
- San Patricio County southwest · 72,053 people
Printable Aransas 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) (141 KB)
- PNG (2400 px) (126 KB)
Paste this code to embed the map on your site:
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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