 
American Paranormal Investigations – Northern California
San Francisco Ghost Society
Central California Paranormal Investigators
Pasadena Paranormal Research Society
South Coast Paranormal(SCP)
Pacific Paranormal Investigations(PPI)
Southern California Paranormal Detectives(S.C.P.D.)
San Diego Paranormal Research Project
Southern California Paranormal Investigators (Covering Riverside, San Bernardino and Orange Counties in CA)
Southern California Paranormal Research Society(SOCALPRS)
Northern California Paranormal Researchers(NCPR) (Covering the greater bay area of San Francisco, Sacramento, out to Turlock and just beyond, and as far south as Monterey)
Golden State Paranormal Research Society (Serving Inland Empire of Southern California (San Bernardino and Riverside Counties, and beyond)
California Paranormal Research(CPR)
Paranormal Studies and Investigations of Oregon(P.S.I.) (Covering Oregon, Washington, and California))
Haunted & Paranormal Investigations International(H.P.I. International) (Serving Northern and Central California)
Tulare County Paranormal Society (Covering Central California)
Spectral Intelligence Solutions (Covering The San Francisco Bay Area)
California Society for Paranormal Assistance & Research(CSPAR) (Covering all of Southern California)
California Haunted Investigations Paranormal Society(C.H.I.P.S) (Serving San Luis Obispo, Santa Barbara, Ventura, Kern, Los Angeles, San Bernardino, Orange, Riverside, Imperial, and San Diego Counties in Southern California)
Searching California Researching Energy Aliens & Manifestations(SCREAM Team) (Covering Northern California and surrounding areas)
X Paranormal (Covering Southern California)
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