(949) 631-5918 Thursday - Friday 10am - 3pm

Museum and Library

Historical Society MuseumThe Costa Mesa Historical Society office, archive, museum and library are open to the public on Thursdays and Fridays from 10:00am until 3:00pm, or at other times by appointment. The building is located near the downtown library and recreation center at 1870 Anaheim Avenue. Learn more…

Please note: the Anaheim Avenue entrance to the Historical Society Museum is temporarily closed while the new library is under construction. Please enter from Park Avenue, near the fire station. 

Diego Sepulveda Adobe

The Diego Sepulveda Adobe is open to the public for tours on the 1st and 3rd Saturdays of every month from 12 Noon to 4PM, or at other times by appointment.  The adobe is located in Estancia Park, 1900 Adams Avenue, Costa Mesa. Please contact us at the above address or phone number for more information. Learn more…

Write to Us

Costa Mesa Historical Society 
PO Box 1764 
Costa Mesa, CA 92628

(949) 631-5918
cmhistory@sbcglobal.net

SAAAB Wing
PO Box 1764 
Costa Mesa, CA 92628

(949) 631-5918
saaabwing@sbcglobal.net

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