Networking

County Members

In 1979, 29 California counties formed PRISM (formerly CSAC Excess Insurance Authority), a Joint Powers Authority, for the sole purpose of finding cost effective insurance solutions and risk management services for members like you. PRISM's innovative and successful approach to insurance has been noticed across the state. Membership has expanded to include 54 of 58 counties in California.

County Information

Find information about member counties below. Each county's profile includes:

  • Board member and alternate member contact information
  • Program and committee participation records
County Name Member Since
Alameda County 6/1/1988
Alpine County 7/1/1986
Amador County 11/1/1979
Butte County 11/1/1979
Calaveras County 11/1/1979
Colusa County 7/1/1986
Contra Costa County 10/1/1994
Del Norte County 7/1/1980
El Dorado County 5/1/1992
Fresno County 11/1/1979
Glenn County 7/1/1986
Humboldt County 11/1/1979
Imperial County 7/1/1986
Inyo County 11/1/1979
Kern County 5/31/1989
Kings County 11/1/1979
Lake County 11/1/1979
Lassen County 7/1/1980
Madera County 4/1/1980
Marin County 7/1/1992
Mariposa County 7/1/1986
Mendocino County 11/1/1979
Merced County 7/1/1986
Modoc County 7/1/1985
Mono County 1/23/1993
Monterey County 7/1/1992
Napa County 7/1/1988
Nevada County 11/1/1979
Placer County 7/1/1980
Plumas County 7/1/1984
Riverside County 7/1/1984
Sacramento County 4/1/1992
San Benito County 3/18/1993
San Bernardino County 3/31/2014
San Diego County 6/15/1993
San Joaquin County 7/1/1995
San Luis Obispo County 11/1/1979
Santa Barbara County 11/1/1979
Santa Clara County 6/30/1984
Santa Cruz County 11/1/1979
Shasta County 11/1/1979
Sierra County 7/1/1986
Siskiyou County 10/8/1985
Solano County 7/1/1981
Sonoma County 11/1/1979
Stanislaus County 1/1/1986
Sutter County 7/1/1986
Tehama County 11/1/1979
Trinity County 7/1/1980
Tulare County 6/30/1988
Tuolumne County 10/1/1980
Ventura County 9/21/2004
Yolo County 7/1/1999
Yuba County 7/1/1981