Data / Population density / San Francisco County

Population density in San Francisco County

Population density in San Francisco County was 6,832 inhabitants per km² in 2025, according to the U.S. Census Bureau. That is up 0.6% from 2024. That is the 1st highest of 58 counties in 2025.

2025, inhabitants per km²6,832
Change on 2024+0.6%
Rank1st of 58Counties in California ranked
Series high7,237.72020
Series low6,7262022

Population density in San Francisco County, 2020 to 2025

CSVChart (SVG)

6,6006,8007,0007,2007,4002020202120222023202420252020: 7,237.7 inhabitants per km²2021: 6,750 inhabitants per km²2022: 6,726 inhabitants per km²2023: 6,756.3 inhabitants per km²2024: 6,789.5 inhabitants per km²2025: 6,832 inhabitants per km²
inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09, published 2026-03-26.
All 6 values
Periodinhabitants per km²
20256,832
20246,789.5
20236,756.3
20226,726
20216,750
20207,237.7

Compared with California and United States

Place2025
San Francisco County6,832
California97.5
United States37.3

Rankings

Definition

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

How to cite

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

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Questions

What is the population density in San Francisco County?

Population density in San Francisco County was 6,832 inhabitants per km² in 2025, according to the U.S. Census Bureau. That is up 0.6% from 2024. That is the 1st highest of 58 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved by Invokely on 2026-10-09.

What was the highest population density in San Francisco County?

7,237.7 inhabitants per km² in 2020, the highest value since 2020 in this series.

More statistics for San Francisco County

All statistics for San Francisco County