United States Penitentiary, Atwater

United States Penitentiary, Atwater
Interactive map of United States Penitentiary, Atwater
LocationMerced County, California
Coordinates37°23′10″N 120°33′30″W / 37.38611°N 120.55833°W / 37.38611; -120.55833
StatusOperational
Security classHigh-security (with minimum-security satellite camp)
Population1,187 [1,082 at the USP, 105 in prison camp] (September 2023)
Opened2001
Managed byFederal Bureau of Prisons
WardenB. M. Trate

The United States Penitentiary, Atwater (USP Atwater) is a high-security United States federal prison for male inmates in unincorporated Merced County, California. The institution also includes a minimum-security satellite camp. It is operated by the Federal Bureau of Prisons, a division of the United States Department of Justice.

USP Atwater is located on land formerly part of Castle Air Force Base. It is near the city of Atwater, 130 miles from San Francisco.