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About Rio del Mar

Rio del Mar*, California, is a 4.6 square mile community on Monterey Bay in Santa Cruz County. Founded in the 1920’s, Rio del Mar’s population at the time of the 2000 census was 9,198.
Rio del Mar is located at latitude 36.968 N and longitude 121.899 W.   RDM zip code is 95003. The time zone is Pacific Standard Time (PST), or GMT -8, or -7 in summer. 
*Spanish = River to the sea

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