The government of San Jacinto County, Texas is a county government operating under the Texas Constitution and the laws of the State of Texas. The county government is composed of elected officials, including the County Judge, four County Commissioners, the County Clerk, the County Treasurer, the County Tax Assessor-Collector, the County Sheriff, the County Attorney, and the County Surveyor.

San Jacinto County is located in the East Texas region of the state of Texas. The county seat is Coldspring. The county was created in 1870. The county is home to the Sam Houston National Forest, Lake Livingston, and the San Jacinto River. The economy of the county is largely based on agriculture, timber, and oil and gas production.

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