1 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| San Francisco | 1 | 767,968 | 870,518 | -2.6% | 16,445 | 46.70 | City |
San Francisco is the largest city in San Francisco County, with a population of 767,968.
San Francisco is the smallest city in San Francisco County.
There is 1 city in San Francisco County, California.