NOTE: Gray indicates insufficient data or a suppressed estimate.
Household sizes in the San Francisco metro skew notably smaller in the urban core, with San Francisco proper and parts of downtown Oakland displaying averages below 2.0, reflecting high concentrations of single-person and couple households. The largest household sizes, exceeding 3.0, cluster in the eastern and southeastern portions of the metro—particularly in zip codes near Antioch, eastern Concord, and pockets of East San Jose and Daly City—areas with higher immigrant populations and more multi-generational living arrangements. A clear gradient emerges moving outward from the urban core, with mid-range values (2.4–2.8) forming a transitional band through suburban communities like Hayward, Fremont, and Richmond.
Data: U.S. Census Bureau, 2023 ACS
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