Murrieta is a city in southwestern Riverside CountyCaliforniaUnited States. The population of Murrieta was 103,466 at the 2010 census. Murrieta experienced a 133.7% population increase between 2000 and 2010, according to the most recent census, making Murrieta one of the fastest growing cities in the state. This population boom in 2010 surpassed the population of the historically larger and more commercial city of Temecula to the south for the first time since the incorporation of either city. Temecula and Murrieta together form the southwestern anchor of the Inland Empire region. The Murrieta-Temecula-Menifee Urban Area had a population of 441,546 at the 2010 Census. Largely residential in character, Murrieta is typically characterized as a commuter town, with many of its residents commuting to jobs in San Diego CountyOrange CountyLos Angeles CountyTemecula, and Camp Pendleton.

Murrieta is bordered by Temecula to the south and the newly incorporated cities of Menifee and Wildomar to the north.