Fun SF and Bay Area Demographics
Population
All Bay Area 
counties have been rapidly growing in population. San Francisco is the second most densely populated city in the country. Driving around San Francisco you'll know it is only getting more dense.
Education
Along with 
Washington DC and Seattle, the Bay Area ranks among the best educated metro areas in the country.
Residents
Some local context to the current political issue of immigration. The Bay Area would be a totally different place without it.