San Jacinto County, Texas
County seat: Coldspring · Population 29,488 (2025) · 569 sq mi
San Jacinto County is the 97th most populous of Texas's 254 counties, with 29,488 people (2025 estimate). Its county seat is Coldspring. It is part of the Southeast region, one of the 12 Texas Comptroller economic regions. The map shows its 4 cities and towns and the 5 neighboring counties.
San Jacinto County facts
- County seat
- Coldspring
- Population (2025 estimate)
- 29,488 +7.6% since 2020
- Land area
- 569 sq mi 233rd largest of 254
- Water area
- 59 sq mi
- Population density
- 52 per sq mi
- Established
- 1870
- Named after
- Battle of San Jacinto 1836 decisive battle of the Texas Revolution
- Largest city
- Shepherd 1,942
- Median household income
- $65,364
- Cities and towns
- 4 plus 2 CDPs
- ZIP codes
- 8
- Time zone
- Central
- FIPS code
- 48407
Cities and towns in San Jacinto County
San Jacinto County has 4 incorporated cities, towns and villages. Populations count the people living inside San Jacinto County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Shepherd | City | 1,942 | |
| Coldspring (county seat) | City | 886 | |
| Point Blank | City | 734 | |
| Cleveland | City | 0 | Liberty and Montgomery counties |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Cape Royale | 574 | |
| Oakhurst | 266 |
ZIP codes in San Jacinto County
8 ZIP codes reach into San Jacinto County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 77320 also Walker County
- 77328 also Montgomery and Liberty counties
- 77331
- 77358 also Walker and Montgomery counties
- 77359
- 77364
- 77371 also Liberty County
- 77378 also Montgomery County
Population of San Jacinto County, 2020–2025
San Jacinto County grew by 2,082 people (+7.6%) between April 2020 and July 2025: 467 more deaths than births and a net gain of 2,521 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 27,542 |
| 2021 | 27,836 |
| 2022 | 28,428 |
| 2023 | 29,168 |
| 2024 | 29,328 |
| 2025 | 29,488 |
Neighboring counties
- Polk County northeast · 53,434 people
- Montgomery County southwest · 781,194 people
- Walker County northwest · 83,842 people
- Liberty County southeast · 121,364 people
- Trinity County north · 14,384 people
Printable San Jacinto 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) (138 KB)
- PNG (2400 px) (89 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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