ZIP Codes of Aransas County, TX

Population & People
Population & People
Total Population
21,046
Household Income
Household Income
Median Income
$80,692
Housing
Housing
Total Housing Units
13,950
Business & Economy
Business & Economy
Total Businesses
572
Employment
Employment
Employment Rate
49.29%
Education
Education
Bachelor's Degree+
31.84%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 3 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:3 ZIP Codes (1 Standard, 2 PO Box, 0 Unique) [See All]
Area Code:361
Timezone:Central (GMT -06:00)
Local Time:2:13:50 PM
Population:21,046 [See All]
FIPS:48007
CBSA:Corpus Christi, TX
Land Area:117 sq mi
Water Area:56 sq mi
Coordinates:28.1079, -97.0435
Quick Link:
https://www.zip-codes.com/county/tx-aransas.asp
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Texas's #113 most populous county
21,046 residents across 3 ZIPs — #113 of 254 Texas counties.

Standout ZIPs in this County


Most Populous
Rockport · 20,568 people
97.7% of county total
Highest Income
Fulton · $86,250 median
1.1× county average
Largest Land Area
Rockport · 117.2 sq mi
Spans the most ground
Fastest Growth
Rockport · 0.5% (10-yr)
20,459 → 20,568 residents
Most Educated
Rockport · 31.4% bachelor's+
5,021 of 15,994 adults 25+

Things worth knowing about Aransas County


21,046 residents live across 3 ZIPs covering 117 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 21,026 to 21,046 from 2014 to 2024 — a +0.1% change. 1 ZIPs gained residents, 1 lost.

The county's wealthiest ZIP 78358 (Fulton, $86,250 median) and poorest ZIP 78382 (Rockport, $75,135) are 9.5 miles apart — a 1.1× income gap across local geography.

Density varies 10× across the county — from 175 people/sq mi in 78382 (Rockport) to 1,687 in 78358 (Fulton).

Educational attainment ranges from 31.4% bachelor's+ in 78382 (Rockport) to 46.7% in 78358 (Fulton) — the breadth of educational profiles across the area.

Within Texas, this is the #113 most populous of 254 counties and ranks #54 for median household income .

Weighted by population, the typical household earns about $75,387 across the county — reflecting what a typical resident sees, not a simple ZIP average.

31.8% of adults age 25+ hold a bachelor's degree or higher (5,244 of 16,472 reporting).

1 Standard delivery, 2 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Aransas County


Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Rockport

All ZIP Codes in Aransas County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
78382RockportStandard20,568$75,135117.20.5%
78358FultonPO Box478$86,2500.3-15.7%
78381RockportPO Box0.0

Adjacent & Nearby Counties