Dimmit County, Texas
County seat: Carrizo Springs · Population 8,024 (2025) · 1,329 sq mi
Dimmit County is the 176th most populous of Texas's 254 counties, with 8,024 people (2025 estimate). Its county seat is Carrizo Springs. It is part of the South Texas region, one of the 12 Texas Comptroller economic regions. The map shows its 3 cities and towns and the 5 neighboring counties.
Dimmit County facts
- County seat
- Carrizo Springs
- Population (2025 estimate)
- 8,024 −6.9% since 2020
- Land area
- 1,329 sq mi 29th largest of 254
- Water area
- 6 sq mi
- Population density
- 6 per sq mi
- Established
- 1858
- Named after
- Philip Dimmitt officer in the Texian Army during the Texas Revolution
- Largest city
- Carrizo Springs 4,491
- Median household income
- $38,808
- Cities and towns
- 3 plus 3 CDPs
- ZIP codes
- 6
- Time zone
- Central
- FIPS code
- 48127
Cities and towns in Dimmit County
Dimmit County has 3 incorporated cities, towns and villages. Populations count the people living inside Dimmit County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Carrizo Springs (county seat) | City | 4,491 | |
| Asherton | City | 659 | |
| Big Wells | City | 448 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Carrizo Hill | 1,198 | |
| Catarina | 155 | |
| Brundage | 0 |
ZIP codes in Dimmit County
6 ZIP codes reach into Dimmit County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 78014 also La Salle County
- 78827
- 78830
- 78834 also Zavala County
- 78836
- 78839 also Zavala County
Population of Dimmit County, 2020–2025
Dimmit County shrank by 591 people (−6.9%) between April 2020 and July 2025: 45 more births than deaths and a net loss of 636 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 8,584 |
| 2021 | 8,484 |
| 2022 | 8,377 |
| 2023 | 8,293 |
| 2024 | 8,216 |
| 2025 | 8,024 |
Neighboring counties
- Webb County southeast · 281,224 people
- Zavala County north · 9,037 people
- Maverick County northwest · 58,823 people
- La Salle County east · 6,517 people
- Frio County northeast · 18,823 people
Printable Dimmit 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) (128 KB)
- PNG (2400 px) (55 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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