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San Francisco County, California
San Francisco is a consolidated city and county of 47 square miles, the densest major market in the West and the financial and technology center of Northern California. Development is entirely infill and conversion — downtown office-to-residential, Mission Bay and Treasure Island buildout — under a discretionary-review process, historic-resource rules, and sea-level-rise planning along the eastern waterfront.
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San Francisco County at a glance
- 828,000Population (2024)
- San FranciscoCounty seat
- 47 sq miLand area
- 17,617 / sq miDensity
- $141,000Median household income
- $1,380,000Median home value
What the live San Francisco County map shows
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- City Boundaries: 1
- School Boundaries: 1
- Congressional Districts: 2
- Soils: 17
- State House Districts: 3
- State Senate Districts: 2
- Voter Precincts: 514
- Wetlands: 7
- Development News: 3
Cities and towns in San Francisco County
San Francisco.