The Oxnard-Thousand Oaks-Ventura metropolitan statistical area (MSA) boundaries encompass all of Ventura County, Calif. The metro area is comprised of two key population centers: the Oxnard Plain and the Conejo/Simi Valleys. It also contains the rural regions of Santa Clara River Valley and Ojai Valley, and is home to the U.S. Navy bases of Port Hueneme and Point Mugu. Oxnard, Thousand Oaks and Ventura stake claims as the three largest cities in the area.
