Tag Archives: Bay Area

Bay Area Demographics – In Detail

San Francisco Bay Area Demographics

18 charted analyses of ancestry, affluence, education, real estate,
politics, poverty and employment for San Francisco, Marin, Napa,
Sonoma, San Mateo, Santa Clara, Alameda & Contra Costa Counties.

4th Quarter 2014, Paragon Special Report

These charts are mostly based on U.S. Census surveys from 2010 to 2013. Each of the 8 counties examined contains areas of widely varying demographics, and the multiple reports analyzed (6+ for each county) contain counts and estimates made at different times. Though these statistics are broad overviews, we still found many fascinating insights – and hope you will as well.

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Ancestry, Race & Age

For the most part, the ancestry and race categories used below
are as designated in the U.S. Census reports.

Ancestry: This first chart is a collated overview of the 8 counties. The Bay Area is one of the most multi-cultural places on earth, but (not broken out on this chart) this diversity is not evenly spread: Different ethnic and national groups often cluster in specific counties. For example, San Francisco has the largest populations with Chinese or Russian ancestry; Santa Clara has, by far, the greatest number of residents from India, Vietnam or Mexico; Alameda leads in those of Portuguese or Pacific Island heritage. For breakdowns by county, U.S. Census reports can be accessed here.

Race: Marin County has by far the largest percentage white (non-Hispanic) population at 73%, followed by Sonoma and Napa. San Francisco has the largest Asian percentage at 34.4%, with Santa Clara just behind at 34.1%. Santa Clara is the only county where white isn’t the largest group – Asian is bigger by a tiny margin. Napa has the largest Hispanic percentage at 33%, with 5 other counties between 23% and 27%. Alameda has the most substantial percentage black population at 12%.


Foreign-Born: The foreign-born population in the Bay Area is large (behind only New York, Miami, LA and Chicago) with again, different groups predominating in different counties. About 50% of our foreign-born residents have acquired U.S. citizenship.

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