California GenealogyEdit This Page

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This article is about a state of the United States. For other uses, see California (disambiguation).

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United States go to California

Welcome to California, the Golden State

Most unique genealogical features:


Extinct or Renamed Counties:  Branciforte · Klamath · Lake (Nevada) · Pahute · Roop · Nataqua Territory

Click on the map below to go to a county page. Hover over a county to see its name. To see a larger version of the map, click here.


Del NorteSiskiyou CountyModoc CountyHumboldt CountyTrinity CountyShasta CountyLassen County, CaliforniaMendocino CountyTehama CountyPlumas CountyGlenn CountyButte CountyLake CountySierra CountyColusa CountyYuba CountySutter CountyNevada CountySonoma CountyNapa CountyYolo CountyPlacer CountyEl Dorado CountySacramento CountySolano CountyMarin CountyContra Costa CountySan Joaquin CountyAmador CountyAlpine CountySan Francisco CountySan Mateo CountyAlameda CountyCalaveras CountyTuolumne CountyStanislaus CountySanta Clara CountyMono CountySanta Cruz CountyMerced CountyMariposa CountyMadera CountyFresno CountySan Benito CountyMonterey CountyKings CountyTulare CountyInyo CountySan Luis Obispo CountySanta Barbara CountyKern CountyVentura CountyLos Angeles CountySan Bernardino CountyOrange CountyRiverside CountySan Diego CountyImperial CountyCalifornia-county-map.gif

Major Repositories

California State Archives · California State Library · Sutro Library · California Historical Society · California Genealogical Society · UC Berkeley Bancroft Library · Los Angeles Public Library · Chinese Historical Society · National Archives Pacific Region (Riverside) · National Archives Pacific Region (San Francisco) · Family History Library

Migration Routes

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Applegate Trail · Butterfield Overland Mail · California Trail · Camino Real de California · Central Overland Trail · Mormon Trail to Southern California · Old Spanish Trail · Atlantic and Pacific Railroad · Central Pacific Railroad · Santa Fe Railway · Southern Pacific Railroad · Texas and Pacific Railway · Union Pacific Railroad · Ship Passenger Arrivals

Research Tools

Things You Can Do

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