Listed on this page are all the active single family homes for sale in Winchester, California priced from $350,000-$450,000. Winchester is located in Southwest Riverside County. Winchester, in past years, has been mainly rural and home to agricultural businesses. Due to a boom in housing construction in the mid 2000s, Winchester has experienced rapid growth. Feel free to contact me, Sonya L. Sanders, for more local and lifestyle information or follow my blog. (760) 458-7195.