THE GRIMES COUNTY LAND BRIEF
Land in the
Southern Post Oak Savanna setting.
Grimes County has 787.5 square miles of land in Texas. 5 mapped landscape regions meet across Grimes County: Southern Post Oak Savanna, Southern Blackland/Fayette Prairie, Southern Tertiary Uplands, among others.
The Post Oak Savanna's irregular plains form a transition between open prairie and the Piney Woods. Post oak, grassland and locally dense clay subsoils are characteristic regional elements.
Regional context: East Central Texas Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Grimes County intersects 5 mapped regional units. The largest mapped shares are:
- Southern Post Oak Savanna49.5%
- Southern Blackland/Fayette Prairie30.1%
- Southern Tertiary Uplands15.1%
- Floodplains and Low Terraces3.5%
- Floodplains and Low Terraces1.8%
Texas Blackland Prairies in Grimes County
Fine-textured clay soils distinguish the Blackland Prairie landscape from surrounding Texas regions. Its historic prairie setting now includes a mixture of agricultural areas and expanding developed corridors.
Read the regional source ↗South Central Plains in Grimes County
The Piney Woods occupy irregular plains at the western edge of the southern forest belt. Pine and hardwood landscapes alternate with wider river corridors such as the Red River valley.
Read the regional source ↗Finding your parcel within Grimes County
The atlas lists 9 cities, towns, townships, and Census communities associated with Grimes County, including Navasota, Pinebrook, Shiro. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Grimes County by land and water
The Census records 14.1 square miles of water within Grimes County, or 1.8% of its total area. That share is close to Grimes County’s 1.8%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Grimes County has 1,538 times the land area of nearby Anderson city (0.51 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Brazos County, Madison County, Montgomery County, Walker County, Waller County, Washington County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.

