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Genealogy & Local History

Printable brochure
"Finding Your Lake County Ancestors: Genealogy Resources in Lake County"

Find genealogy resources for ancestry in Lake County and beyond.
Lake County was part of Napa County and Mendocino county until 1861, so records before that time may be on file in Napa County or Mendocino County.  

Contact each organization directly for more information.

Lake County Library Collection

Books about Lake County

Lake County newspapers on microfilm 1863-current.

  • Births, marriages and deaths are partially indexed 1863-1949.
  • The local newspaper offices do not maintain extensive collections of back issues. 

The Mauldin Notes

The Mauldin Notes are 10,000 pages of Lake County historical information. Indexed

Lake County Library research assistance

Library staff will perform brief searches in the microfilms and make copies or scan articles.
Paper copies can be mailed to patrons, scans can be emailed to patrons.
1-15 copies are free,
16 or more copies are ten cents each.
Send requests for information to
Lake County Library
1425 N. High Street Lakeport CA 95453.
707-263-8817
SASE is desirable.
Email requests to Library@co.lake.ca.us

Lake County Directories

A few directories for Lake County were published and the Lake County Library does not have copies. The California State Library has some Lake County directories on microfilm in the California History Room.

Other Genealogy Resources in Lake County and Nearby Areas

Resources in California

General Resources