"Prosper is near State Highway 289 ten miles northwest of McKinney in west central Collin County. It was built in 1902 as a stop on the St. Louis, San Francisco and Texas Railway in the agricultural region known as Elm Valley and was one of the last towns established in Collin County."
https://tshaonline.org/handbook/online/articles/HLP58Prosper Local EventsDid you know that you have water restrictions regarding outdoor water use when using your sprinkler system? Find out when you are allowed to water!