The Calipatria state prison is one among the many male only state prison facilities in California. It is located in the city of Calipatria, California, within Imperial County. The Calipatria State Prison facility first opened its doors in 1992, less than two years before the Centinela State Prison would open, which is also located in Imperial County. The Calipatria State Prison is often times referred to as the lowest prison in the Western Hemisphere, due to the fact that it is situated at approximately 184 feet below sea level. The original design for Calipatria State Prison was meant to hold a maximum of 2,200 inmates, though current population numbers are at about 4,200 prisoners housed in the facility. The staff consists of over 1,100 and has an annual budget of about $123 million.