Gaines County, Texas
County seat: Seminole · Population 23,956 (2025) · 1,502 sq mi
Gaines County is the 105th most populous of Texas's 254 counties, with 23,956 people (2025 estimate). Its county seat is Seminole. It is part of the West Texas region, one of the 12 Texas Comptroller economic regions. The map shows its 3 cities and towns and the 6 neighboring counties.
Gaines County facts
- County seat
- Seminole
- Population (2025 estimate)
- 23,956 +10.9% since 2020
- Land area
- 1,502 sq mi 19th largest of 254
- Water area
- 1 sq mi
- Population density
- 16 per sq mi
- Established
- 1876
- Largest city
- Seminole 7,730
- Median household income
- $74,132
- Cities and towns
- 3 plus 1 CDPs
- ZIP codes
- 5
- Time zone
- Central
- FIPS code
- 48165
Cities and towns in Gaines County
Gaines County has 3 incorporated cities, towns and villages. Populations count the people living inside Gaines County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Seminole (county seat) | City | 7,730 | |
| Seagraves | City | 2,352 | |
| Denver City | Town | 0 | Yoakum County |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Loop | 128 |
ZIP codes in Gaines County
5 ZIP codes reach into Gaines County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 79323 also Yoakum County
- 79331 also Dawson, Martin and Borden counties
- 79342
- 79359 also Yoakum and Terry counties
- 79360
Population of Gaines County, 2020–2025
Gaines County grew by 2,357 people (+10.9%) between April 2020 and July 2025: 1,819 more births than deaths and a net gain of 527 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 21,699 |
| 2021 | 21,876 |
| 2022 | 22,107 |
| 2023 | 22,552 |
| 2024 | 23,272 |
| 2025 | 23,956 |
Neighboring counties
- Andrews County south · 18,914 people
- Lea County, New Mexico west · 74,749 people
- Dawson County east · 11,776 people
- Yoakum County north · 7,438 people
- Terry County northeast · 11,720 people
- Martin County southeast · 5,284 people
Printable Gaines 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) (125 KB)
- PNG (2400 px) (53 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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