Cat Hollow is a neighborhood in Brushy Creek, Texas. Brushy Creek is a census-designated place (CDP) in Williamson County, Texas, United States. Brushy Creek is located just west of Round Rock along the shore of Brushy Creek. According to the United States Census Bureau, the CDP has a total area of 8.7 square miles, all of it land.
The median income for a household in the CDP was $84,472, and the median income for a family was $85,370 (these figures had risen to $107,465 and $113,523 respectively as of a 2007 estimate). Males had a median income of $60,409 versus $39,542 for females. The per capita income for the CDP was $28,129. About 1.2% of families and 1.7% of the population were below the poverty line, including 2.0% of those under age 18 and 1.3% of those age 65 or over.