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Mason County, Texas

Updated November 1, 2026 · Data: U.S. Census Bureau

Mason County, Texas has its county seat in Mason and FIPS code 48319. About 3,951 people live here, the 208th most populated of the 254 Texas counties.

County seat	Mason
FIPS code	48319 (Texas 48 + county 319) · all Texas FIPS codes
Population	3,951 (208th of 254)
Land area	928.8 sq mi (98th largest; + 3.4 sq mi water)
People per sq mi	4.3
Time zone	Central time (America/Chicago)
Median home value	$274,600
Median property tax paid	$2,239 a year (about 0.82% of the median home value: our calculation, not an official rate)
Official website	www.co.mason.tx.us

What counties border Mason County?

Mason County shares a border with 6 counties:

What cities and towns are in Mason County?

1 places with 1,000+ people have residents here; together they hold about 50% of the county's population. The rest live in smaller communities and rural areas.

Place	Population	Residents in this county
Mason	1,993	100.0%

CDP = census-designated place: a named community with no city government.

What ZIP codes are in Mason County?

6 ZIP code areas with residents touch Mason 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 Mason County, Texas?

Mason.

What is the FIPS code for Mason County?

48319. The first two digits (48) are Texas; the last three (319) are the county.

What counties border Mason County?

Gillespie County, Kimble County, Llano County, McCulloch County, Menard County, San Saba County.

How many people live in Mason County?

About 3,951 (ACS 2019-2023 5-year estimate), the 208th most of the 254 Texas counties.

What time zone is Mason County in?

Central time (America/Chicago).

What is the largest city in Mason County?

Mason, with about 1,993 people (counting all of it, including any part in another county).

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