Mason County, Texas
County seat: Mason · Population 3,990 (2025) · 929 sq mi
Mason County is the 208th most populous of Texas's 254 counties, with 3,990 people (2025 estimate). Its county seat is Mason. It is part of the West Texas region, one of the 12 Texas Comptroller economic regions. The map shows its 1 city or town and the 6 neighboring counties.
Mason County facts
- County seat
- Mason
- Population (2025 estimate)
- 3,990 +0.9% since 2020
- Land area
- 929 sq mi 98th largest of 254
- Water area
- 3 sq mi
- Population density
- 4 per sq mi
- Established
- 1858
- Named after
- Fort Mason place in Texas, United States
- Largest city
- Mason 2,171
- Median household income
- $74,180
- Cities and towns
- 1
- ZIP codes
- 6
- Time zone
- Central
- FIPS code
- 48319
Cities and towns in Mason County
Mason County has 1 incorporated place. Populations count the people living inside Mason County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Mason (county seat) | City | 2,171 |
ZIP codes in Mason County
6 ZIP codes reach into Mason County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 76820
- 76825 also McCulloch County
- 76842 also San Saba County
- 76856
- 76869 also San Saba and Llano counties
- 78618 also Gillespie County
Population of Mason County, 2020–2025
Mason County grew by 37 people (+0.9%) between April 2020 and July 2025: 156 more deaths than births and a net gain of 196 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 3,970 |
| 2021 | 3,936 |
| 2022 | 3,983 |
| 2023 | 3,937 |
| 2024 | 4,010 |
| 2025 | 3,990 |
Neighboring counties
- Llano County east · 23,353 people
- Kimble County southwest · 4,438 people
- McCulloch County north · 7,472 people
- Gillespie County southeast · 28,527 people
- Menard County west · 1,956 people
- San Saba County northeast · 5,787 people
Printable Mason 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) (118 KB)
- PNG (2400 px) (50 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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