Blythe is a city in Riverside County, California, United States, in the Palo Verde Valley, an agricultural area along the Colorado River. Blythe was named after Thomas Blythe, a gold prospector who established primary water rights to Colorado River in the region in 1877. The city was incorporated on July 21, 1916, and has a population of approximately 21,500 as of 2003. Blythe apartments for rent comparison page shows most up to date rent information on Blythe apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.