OC's 125th Birthday - Quasquicentennial

In 1889, locals voted to separate from Los Angeles County and form the County of Orange. In 1989, the County of Orange commemorated its centennial. Throughout 2014, the County will celebrate its 125th anniversary, also known as the Quasquicentennial. 

"This Day in History" Calendar

Orange County HistoryClick here to view a timeline of significant events in Orange County history, courtesy of OC Archives.


OC Through the Decades

OC Through the DecadesClick here for images of 125 years of Orange County history, compiled by the OC Archives and presented at the County’s Quasquicentennial celebration at the OC Fair on August 1, 2014.

Click here to take a photo journey back in time through 125 years of Orange County history, presented by the OC Public Library.

OC Icons

OC iconsClick here to learn about 125 iconic people, places and things that make Orange County an amazing place to live, work and play.