County · code 48407
San Jacinto CountyTexas
San Jacinto County is a county in Texas with its seat in Coldspring. It was created on August 13, 1870, from parts of Liberty, Montgomery, Polk, and Walker counties.
- Founded1870
- County seatColdspring
- Named forBattle of San Jacinto
- Land area569 sq mi + 59 sq mi water
- Population27,402 2020 Census
- Parcels mapped35,962 checked 16 October 2026
Where it is
San Jacinto on the map of Texas
Texas has 254 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1870 from Liberty County, Montgomery County, Polk County and Walker County
An old deed may name a county that no longer exists, or a boundary that has since moved.
The county was authorized by the Constitutional Convention on January 5, 1869, with boundaries identical to the eventual county created in 1870. San Jacinto County was created from Liberty, Montgomery, Polk, and Walker counties on August 13, 1870, and fully organized by December 1, 1870. The county was named after the Battle of San Jacinto.
- 1869Changed Constitutional Convention authorized creation of San Jacinto from Liberty, Montgomery, Polk, and Walker; county was never organized or legalized by the Legislature. Boundaries were identical to those of San Jacinto created 13 August 1870. · Gammel, 6: "Ordinances Constitutional Convention 1868," 66
- 1870San Jacinto County created San Jacinto created from Liberty, Montgomery, Polk, and Walker; San Jacinto not fully organized. · Texas Laws 1870, 12th leg., called sess., ch. 59/p. 79
- 1870Changed San Jacinto fully organized. · Kennedy, 154
- 1874Boundary clarified Boundary of San Jacinto with Montgomery and Walker clarified (no change). · Texas Laws 1874, 14th leg., reg. sess., ch. 62/p. 71
Land and parcels
What the maps cover in San Jacinto
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 35,962 parcels from San Jacinto County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Official
One point per address, 22,537 in all from Texas Geographic Information Office (TxGIO, formerly TNRIS), a division of the Texas Water Development Board; StratMap program.
checked 14 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
San Jacinto by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
San Jacinto County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of San Jacinto County.
See your own lot on these maps
Open San Jacinto County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about San Jacinto County
- When was San Jacinto County founded?
- San Jacinto County was founded in 1870, formed from Liberty County, Montgomery County, Polk County and Walker County, and named after Battle of San Jacinto.
- What is the county seat of San Jacinto County?
- The county seat of San Jacinto County is Coldspring.
- Is there an online parcel map for San Jacinto County?
- Yes. San Jacinto County publishes a parcel map of 35,962 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has San Jacinto County's boundary or name changed?
- San Jacinto County was created in 1870 from Liberty County, Montgomery County, Polk County and Walker County. Since then the Atlas of Historical County Boundaries records 2 later changes, chiefly involving Liberty County, Montgomery County and Polk County.
- Is my lot in a flood zone?
- We do not have flood maps for San Jacinto County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby