Oldham County, Texas
County seat: Vega · Population 1,783 (2025) · 1,501 sq mi
Oldham County is the 234th most populous of Texas's 254 counties, with 1,783 people (2025 estimate). Its county seat is Vega. It is part of the High Plains region, one of the 12 Texas Comptroller economic regions. The map shows its 2 cities and towns and the 6 neighboring counties.
Oldham County facts
- County seat
- Vega
- Population (2025 estimate)
- 1,783 +1.4% since 2020
- Land area
- 1,501 sq mi 21st largest of 254
- Water area
- 1 sq mi
- Population density
- 1 per sq mi
- Established
- 1876
- Named after
- William Simpson Oldham Sr. American politician (1813-1868)
- Largest city
- Vega 891
- Median household income
- $79,900
- Cities and towns
- 2 plus 2 CDPs
- ZIP codes
- 6
- Time zone
- Central
- FIPS code
- 48359
Cities and towns in Oldham County
Oldham County has 2 incorporated cities, towns and villages. Populations count the people living inside Oldham County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Vega (county seat) | City | 891 | |
| Adrian | City | 136 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Boys Ranch | 309 | |
| Wildorado | 157 |
ZIP codes in Oldham County
6 ZIP codes reach into Oldham County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 79001 also Deaf Smith County
- 79010 also Potter County
- 79018 also Hartley and Moore counties
- 79092 also Deaf Smith County
- 79098 also Deaf Smith, Randall and Potter counties
- 88430
Population of Oldham County, 2020–2025
Oldham County grew by 24 people (+1.4%) between April 2020 and July 2025: 6 more births than deaths and a net gain of 19 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 1,766 |
| 2021 | 1,734 |
| 2022 | 1,763 |
| 2023 | 1,773 |
| 2024 | 1,794 |
| 2025 | 1,783 |
Neighboring counties
- Deaf Smith County south · 18,626 people
- Hartley County north · 4,904 people
- Quay County, New Mexico west · 8,454 people
- Potter County east · 114,453 people
- Moore County northeast · 21,891 people
- Randall County southeast · 152,351 people
Printable Oldham 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) (126 KB)
- PNG (2400 px) (54 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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