This is a list of Ghost Towns of California, at least the Northern part of the state that can reasonably be called part of the Pacific Northwest or Cascadia.
Alleghany
AMADOR CITY
Auburn
Berryessa
Big Bend
BRIDGEVILLE
BULL CREEK
BUTTE CITY
Camptonville
CARBONDALE
Cement
Cherokee
China Camp
Colfax
Collinsville
COLOMA
CRANNELL
Cuffey’s Cove
Deadwood
Downieville
DRY TOWN
Dutch Flat
EL DORADO
Elizabet
FALK
FIDDLETOWN
Forbestown
Forest
Forest Hill
Genesee
GEORGETOWN
Blocksburg
Graniteville
Grass Valley
Hammonton
HERBERTVILLE
HUMBOLDT CITY
IONE
Iowa Hill
JACKSON
Johnsville
Last Chance
LOCKE
Lucky’s Mining
Magalia
Meadow Lake
Meridian
Michigan Bluff
Morrisstown
Mulberry
Navarro By The Sea
Nevada City
New Chicago
Nord
North Bloomfield
North San Jaun
Oro Fino
Oroville
PETROLIA
PLACERVILLE
Poker Flat
Port Win
ROHNERVILLE
Rough and Ready
SALMON FALLS
Scales
Sierra City
Sierraville
Spenceville
Stirling City
SUTTER CREEK
Timbuctoo
VOLCANO
VOLCANOVILLE
Walker Mine
WEAVERVILLE
Yolo