Population overview
Grimes County is home to roughly 34,252 people, making up about 0.11% of the total population of Texas. Within the East Texas region, it ranks #23 of 44 counties by population. The combination of 794 square miles of land and 34,252 residents yields a density of about 43.1 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 Grimes County compares
Compared with the other 253 Texas counties, Grimes 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 Grimes |
|---|---|---|
| Grimes County | 34,252 | — |
| East Texas region average | 64,981 | +90% |
| Texas county median | 18,916 | -45% |
| Largest in Texas (Harris) | 5,045,026 | +14629% |
Neighboring county populations
Grimes County shares borders with 6 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 |
| Brazos County | Bryan | 249,088 | 425.1 |
| Walker County | Huntsville | 83,842 | 106.4 |
| Waller County | Hempstead | 69,858 | 135.9 |
| Washington County | Brenham | 38,288 | 62.9 |
| Madison County | Madisonville | 14,226 | 30.3 |
Frequently asked questions
What is the population of Grimes County, Texas?+
Grimes County has an estimated population of 34,252 residents, based on the most recent U.S. Census data.
What is the population density of Grimes County?+
Grimes County has a population density of approximately 43.1 people per square mile across its 794 sq mi of land area — characteristic of a small-town / exurban county.
Where does Grimes County rank among Texas counties by population?+
Grimes County ranks #88 out of 254 Texas counties by total population, accounting for roughly 0.11% of the state's total population.
What is the most populous county near Grimes County?+
Among the 6 counties bordering Grimes, Montgomery County is the most populous with about 781,194 residents.
How is Grimes 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.