THE ROUND ROCK LAND BRIEF
Land in the
Northern Blackland Prairie setting.
Round Rock city has 38.6 square miles of land in Travis County, Williamson County. Its Census reference point is in Northern Blackland Prairie, within Texas Blackland Prairies.
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.
Regional context: Texas Blackland Prairies ↗ · Classification at the Census reference point
One place name. 2 county geographies.
Round Rock intersects 2 county geographies: Travis County, Williamson County. A Round Rock mailing address alone cannot choose the right record office; use the county and parcel identifier on the tax bill or deed.
Round Rock by land and water
The Census records 0.35 square miles of water within Round Rock, or 0.9% of its total area. It is 1.8 percentage points lower than the 2.7% recorded for Texas. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Round Rock city has 6.1 times the land area of nearby Brushy Creek CDP (6.37 square miles). These areas describe boundaries, not comparable property prices.

