Counties in California by poverty rate (US five-year survey estimate)
Trinity County had the highest poverty rate (US five-year survey estimate) of 58 counties in 2021, at 22.5%. San Mateo County had the lowest, at 6.2%. The median was 13.1% and the figure for California was 12.3%. Source: the U.S. Census Bureau.
Map of counties, 2021
- Under 8.7
- 8.7 to 11
- 11 to 13
- 13 to 14
- 14 to 18
- 18 and over
All counties, 2021
Full ranking
Other periods
About this ranking
People with income in the past 12 months below the official US poverty thresholds, as a percentage of people whose poverty status is determined. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.
The headline single-year rate for states and counties is poverty_rate (SAIPE). Poverty status is not determined for people in institutions, military group quarters or college dormitories, or for unrelated children under 15. Absolute thresholds set by the US government, so not comparable with the EU at_risk_of_poverty_rate.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.
How to cite
U.S. Census Bureau. American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs (Counties in California by poverty rate (US five-year survey estimate), 2021) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat
MLA 9
American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs, Counties in California by poverty rate (US five-year survey estimate), 2021. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat. Invokely, https://invokely.ai/rankings/poverty-rate-acs/california-counties?period=2021. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs. Counties in California by poverty rate (US five-year survey estimate), 2021. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat. Also distributed by Invokely, https://invokely.ai/rankings/poverty-rate-acs/california-counties?period=2021.
Harvard
U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs, Counties in California by poverty rate (US five-year survey estimate), 2021 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat, via Invokely: https://invokely.ai/rankings/poverty-rate-acs/california-counties?period=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_california_by_2021,
author = {{U.S. Census Bureau}},
title = {{American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs: Counties in California by poverty rate (US five-year survey estimate), 2021}},
year = {2026},
howpublished = {Data set},
url = {https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/poverty-rate-acs/california-counties?period=2021. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs: Counties in California by poverty rate (US five-year survey estimate), 2021
PY - 2026
DA - 2026/01/29
PB - U.S. Census Bureau
DB - Invokely
UR - https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat
L2 - https://invokely.ai/rankings/poverty-rate-acs/california-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/poverty-rate-acs/california-counties?period=2021.
N1 - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2021/table-based-SF/data/5YRData/acsdt5y2021-b17001.dat. Retrieved 2026-10-12.
ER -
Use this data in your AI agent
Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank Counties in California by poverty rate (US five-year survey estimate) using official data, and cite the source.
rank_places {"indicator":"poverty_rate_acs","level":"province","within":"California","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=poverty_rate_acs&level=province&within=California&limit=10Questions
Which county has the highest poverty rate (US five-year survey estimate)?
Trinity County, with 22.5% in 2021, according to the U.S. Census Bureau.
Which county has the lowest poverty rate (US five-year survey estimate)?
San Mateo County, with 6.2% in 2021.
Where does this ranking come from?
Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B17001: population with income in the past 12 months below the poverty level as a percentage of the population for whom poverty status is determined, calculated with stored inputs. Retrieved 2026-10-12.
Poverty rate (US five-year survey estimate): other rankings
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