"The Bay Area is getting old fast, and it’s accelerating. Though aging is a global trend, the San Francisco metro area — which includes San Francisco, Alameda, Contra Costa, San Mateo and Marin counties — is already the third-oldest among 20 of the largest regions in the U.S., trailing only two places in Florida. And no other region is growing older at a quicker pace."
"Just 13.4 percent of San Francisco’s 805,235 residents are younger than 18, the smallest percentage of any major city in the country. By contrast, San Jose’s percentage of children is 24.8 percent, Oakland’s is 21.3 percent, Boston’s is 16.8 percent and Seattle’s is 15.4 percent, according to Brian Cheu, director of community development for the Mayor’s Office of Housing. Even Manhattan is composed of roughly 15 percent children, according to Dan Kelly, director of planning for San Francisco’s Human Services Agency.
In 1970, children made up 22 percent of San Francisco. In 1960, they constituted 25 percent."
"The Bay Area is getting old fast, and it’s accelerating. Though aging is a global trend, the San Francisco metro area — which includes San Francisco, Alameda, Contra Costa, San Mateo and Marin counties — is already the third-oldest among 20 of the largest regions in the U.S., trailing only two places in Florida. And no other region is growing older at a quicker pace."
More context from 2013 Chronicle article https://www.sfgate.com/bayarea/article/families-exodus-leave...