Lydia G Jauregui Cook (Postmaster)
lydia.g.jauregui-cook@usps.gov
497 Bell St
Los Alamos, CA 93440
Los Alamos, CA 93440
The Los Alamos Post Office is located in the state of California within Santa Barbara County. This location serves 2,058 Los Alamos residents with a median income of $68,750. It's estimated that approximately 3,285 packages pass through this post office each year.