While California saw its first population decline since 1900, a handful of Bay Area cities saw an increase in both population and housing units. Santa Clara, Morgan Hill, and Mountain View all saw their housing units grow, with most being multifamily facilities.

Overall, however, The nine counties in the Bay Area added just 20,522 housing units in 2020. Most counties saw sharp declines in the development of new homes and apartments.

Albany, in Alameda County, saw its population decline by 9.6 percent while all the cities in Marin County decreased.