Mills County, Texas
County seat: Goldthwaite · Population 4,580 (2025) · 748 sq mi
Mills County is the 203rd most populous of Texas's 254 counties, with 4,580 people (2025 estimate). Its county seat is Goldthwaite. It is part of the Central Texas region, one of the 12 Texas Comptroller economic regions. The map shows its 2 cities and towns and the 5 neighboring counties.
Mills County facts
- County seat
- Goldthwaite
- Population (2025 estimate)
- 4,580 +2.8% since 2020
- Land area
- 748 sq mi 208th largest of 254
- Water area
- 2 sq mi
- Population density
- 6 per sq mi
- Established
- 1887
- Named after
- John T. Mills American lawyer who served as a Supreme Court Justice for the Republic of Texas (1817-1871)
- Largest city
- Goldthwaite 1,774
- Median household income
- $67,620
- Cities and towns
- 2 plus 1 CDPs
- ZIP codes
- 9
- Time zone
- Central
- FIPS code
- 48333
Cities and towns in Mills County
Mills County has 2 incorporated cities, towns and villages. Populations count the people living inside Mills County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Goldthwaite (county seat) | City | 1,774 | |
| Mullin | Town | 130 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Priddy | 92 |
ZIP codes in Mills County
9 ZIP codes reach into Mills County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 76442 also Comanche and Hamilton counties
- 76531 also Hamilton and Comanche counties
- 76801 also Brown and Coleman counties
- 76844 also Hamilton and Lampasas counties
- 76853 also Lampasas and San Saba counties
- 76864
- 76870
- 76880
- 76890 also Brown and Comanche counties
Population of Mills County, 2020–2025
Mills County grew by 126 people (+2.8%) between April 2020 and July 2025: 218 more deaths than births and a net gain of 344 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 4,447 |
| 2021 | 4,488 |
| 2022 | 4,497 |
| 2023 | 4,546 |
| 2024 | 4,586 |
| 2025 | 4,580 |
Neighboring counties
- San Saba County southwest · 5,787 people
- Brown County northwest · 38,711 people
- Lampasas County southeast · 23,657 people
- Hamilton County northeast · 8,680 people
- Comanche County north · 14,432 people
Printable Mills 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) (130 KB)
- PNG (2400 px) (74 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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