THE HARRIS COUNTY LAND BRIEF
Land in the
Northern Humid Gulf Coastal Prairies setting.
Harris County has 1,707.1 square miles of land in Texas. 3 mapped landscape regions meet across Harris County: Northern Humid Gulf Coastal Prairies, Flatwoods, Southern Tertiary Uplands.
Low coastal plains extend along the western Gulf, contrasting with more irregular inland country. Grassland was the principal natural cover, with river corridors and coastal features adding local variation.
Regional context: Western Gulf Coastal Plain ↗ · Regional mapping across the county footprint
Where the landscape changes
Harris County intersects 3 mapped regional units. The largest mapped shares are:
- Northern Humid Gulf Coastal Prairies89.5%
- Flatwoods10.2%
- Southern Tertiary Uplands0.2%
South Central Plains in Harris 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 Harris County
The atlas lists 46 cities, towns, townships, and Census communities associated with Harris County, including Houston, League City, Pearland. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Harris County by land and water
The Census records 69.9 square miles of water within Harris County, or 3.9% of its total area. That share is close to Harris County’s 3.9%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Harris County has 216.9 times the land area of nearby Aldine CDP (7.87 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Brazoria County, Chambers County, Fort Bend County, Galveston County, Liberty County, Montgomery County, Waller County within Texas. A tract near one of these lines should be matched to the county identifier on its own records.

