San Jacinto County ( ) is a county in the U.S. state of Texas. As of the 2020 census, its population was 27,402. Its county seat is Coldspring. The county's name comes from the Battle of San Jacinto, which secured Texas' independence from Mexico and established a republic in 1836.
thumb|San Jacinto County Courthouse, located in Coldspring
thumb|Old San Jacinto County Jail
Geography
According to the U.S. Census Bureau, the county has a total area of , of which are land and (9.3%) are covered by water.
Major highways
- 20px U.S. Highway 59
- 20px Interstate 69 is currently under construction and will follow the current route of U.S. 59 in most places.
- 25px U.S. Highway 190
- 20px State Highway 150
- 20px State Highway 156
The TTC-69 component (recommended preferred) of the once-planned Trans-Texas Corridor went through San Jacinto County.
Adjacent counties
- Trinity County (north)
- Polk County (east)
- Liberty County (southeast)
- Montgomery County (southwest)
- Walker County (west)
National protected area
- Sam Houston National Forest (part)