Population overview
San Jacinto County is home to roughly 29,488 people, making up about 0.09% of the total population of Texas. Within the East Texas region, it ranks #26 of 44 counties by population. The combination of 571 square miles of land and 29,488 residents yields a density of about 51.6 people per square mile — characteristic of small-town and exurban Texas, where towns are anchored by a county seat surrounded by working farmland and ranches.
How San Jacinto County compares
Compared with the other 253 Texas counties, San Jacinto County sits in the upper half of the population distribution. It represents the broad middle of Texas — small to mid-sized counties with a clear county seat and a regionally rooted economy.
| Comparison | Population | vs San Jacinto |
|---|---|---|
| San Jacinto County | 29,488 | — |
| East Texas region average | 64,981 | +120% |
| Texas county median | 18,916 | -36% |
| Largest in Texas (Harris) | 5,045,026 | +17009% |
Neighboring county populations
San Jacinto County shares borders with 5 counties. Comparing population across an adjacent corridor often reveals commuting patterns, school-district pull, and economic gravity.
| County | Seat | Population | Density |
|---|---|---|---|
| Montgomery County | Conroe | 781,194 | 748.3 |
| Liberty County | Liberty | 121,364 | 104.6 |
| Walker County | Huntsville | 83,842 | 106.4 |
| Polk County | Livingston | 53,434 | 50.6 |
| Trinity County | Groveton | 14,384 | 20.8 |
Frequently asked questions
What is the population of San Jacinto County, Texas?+
San Jacinto County has an estimated population of 29,488 residents, based on the most recent U.S. Census data.
What is the population density of San Jacinto County?+
San Jacinto County has a population density of approximately 51.6 people per square mile across its 571 sq mi of land area — characteristic of a small-town / exurban county.
Where does San Jacinto County rank among Texas counties by population?+
San Jacinto County ranks #97 out of 254 Texas counties by total population, accounting for roughly 0.09% of the state's total population.
What is the most populous county near San Jacinto County?+
Among the 5 counties bordering San Jacinto, Montgomery County is the most populous with about 781,194 residents.
How is San Jacinto County's population measured?+
Population figures are sourced from the U.S. Census Bureau — the decennial census and annual American Community Survey (ACS) population estimates. See our methodology for full sourcing.