Aransas County area

Population and density of Aransas County

The Census Bureau estimates that 26,146 people lived in Aransas County on July 1, 2025. That ranks #1,623 of 3,222 county equivalents nationally and #101 of 254 in Texas. Since the April 1, 2020 estimates base of 23,828, the population has grown by 2,318 (+9.7%), compared with +8.8% for Texas as a whole.

With 252.3 square miles of land, that is 104 people per square mile (40 per km²), placing Aransas County #960 nationally for density and #50 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 6.2 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Aransas County

4 incorporated places lie at least partly in Aransas County. Together they are home to 13,851 people (53%); the other 12,295 (47%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Rockport city, with 11,348 residents in the county. By land, Corpus Christi city is the largest at 167.7 mi² across all its counties. Among places with at least 1,000 residents in 2020, Rockport city grew fastest since then (+12.7%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Aransas County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Aransas County is an outlying county of the Corpus Christi, TX Metropolitan Statistical Area. Its 3 county equivalents have 451,191 residents on 1,785 square miles of land; Aransas County accounts for 14.1% of the land and 5.8% of the residents. By combined land it ranks #177 of 393 metropolitan areas, and #122 by population. It belongs to the Corpus Christi-Kingsville-Alice, TX Combined Statistical Area.

ZIP codes

5 ZIP Code Tabulation Areas have land in Aransas County; 3 of them have most of their land inside the county, and the others mainly cover neighboring areas.

7795078336783587838278390

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Aransas County

Aransas County shares a land border with 4 county equivalents. Each of them has more land than Aransas County. The largest neighbor is Nueces County (839.4 mi²) and the smallest is Calhoun County (506.9 mi²). Together with its neighbors, Aransas County forms a block of 3,062.4 mi² of land, of which it holds 8.2%.

How big is Aransas County compared with U.S. states?

Aransas County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 4.1 times as much. Texas’s county land could hold about 1,036 areas the size of Aransas County.

Another way to picture it: the same land area would fill a square about 15.9 miles (25.6 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Aransas County?

Aransas County has more land than 317 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Aransas County at #2,079 nationally by total area, 826 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 52.2%, compared with a national county-equivalent median of 1.2% — 51 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Aransas County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.