which county is katy tx
Katy is a city located in Harris, Fort Bend and Waller Counties in the U.S. state of Texas, within the HoustonâSugar LandâBaytown metropolitan area. The population was 11,775 at the 2000 census. Katy, suburb of Houston, Texas, is named for the Missouri-Kansas-Texas Railroad (commonly referred to as the K-T Railroad, now a part of Union Pacific) that ran through Katy in the 19th century.[citation needed] Katy was once known as Cane Island.