Duval County, Texas
Updated · Data: U.S. Census Bureau
Duval County, Texas has its county seat in San Diego and FIPS code 48131. About 9,824 people live here, the 165th most populated of the 254 Texas counties.
| County seat | San Diego |
|---|---|
| FIPS code | 48131 (Texas 48 + county 131) · all Texas FIPS codes |
| Population | 9,824 (165th of 254) |
| Land area | 1,793.5 sq mi (13th largest; + 2.1 sq mi water) |
| People per sq mi | 5.5 |
| Time zone | Central time (America/Chicago) |
| Median home value | $86,400 |
| Median property tax paid | $931 a year (about 1.08% of the median home value: our calculation, not an official rate) |
| Official website | www.co.duval.tx.us |
What counties border Duval County?
Duval County shares a border with 6 counties:
What cities and towns are in Duval County?
3 places with 1,000+ people have residents here; together they hold about 70% of the county's population. The rest live in smaller communities and rural areas.
| Place | Population | Residents in this county |
|---|---|---|
| San Diego | 3,795 | 77.7% (also in other counties) |
| Freer | 2,524 | 100.0% |
| Benavides | 1,399 | 100.0% |
CDP = census-designated place: a named community with no city government.
What ZIP codes are in Duval County?
8 ZIP code areas with residents touch Duval County; the ones marked * cross into another county.
Check an exact address with the address lookup, look up a ZIP code, or see how to confirm your county with official records.
Sources: Census TIGER/Line 2024 (boundary, area, neighbors); ACS 2019-2023 5-year (population, home value, taxes paid); Wikidata, CC0 (seat, website); timezone-boundary-builder (time zone). Data as of November 1, 2026. Not affiliated with any government agency.
FAQ
Frequently asked questions
What is the county seat of Duval County, Texas?
What is the FIPS code for Duval County?
What counties border Duval County?
How many people live in Duval County?
What time zone is Duval County in?
What is the largest city in Duval County?
Free · No signup · Private
Find your county now
Use your location, a city or a ZIP code. The check runs on your device; your location is never sent or stored.