Counties in California by natural change, July to June
San Diego County had the highest natural change, July to June of 58 counties in 2021, at 9,799. Shasta County had the lowest, at -792. The median was 108 and the figure for California was 67,737. Source: the U.S. Census Bureau.
Map of counties, 2021
- Under -200
- -200 to -100
- -100 to 0
- 0 to 800
- 800 to 2,500
- 2,500 and over
All counties, 2021
Full ranking
| Rank | Counties | 2021 | Change on 2020 |
|---|---|---|---|
| 1 | San Diego County Estimated | 9,799 | -30.2% |
| 2 | Santa Clara County Estimated | 7,023 | -21.6% |
| 3 | Los Angeles County Estimated | 5,620 | -83.6% |
| 4 | Alameda County Estimated | 5,125 | -17.8% |
| 5 | San Bernardino County Estimated | 4,433 | -63.9% |
| 6 | Fresno County Estimated | 4,072 | -35.5% |
| 7 | Sacramento County Estimated | 4,049 | -29.5% |
| 8 | Kern County Estimated | 3,871 | -33.8% |
| 9 | Orange County Estimated | 3,754 | -68.5% |
| 10 | Riverside County Estimated | 2,911 | -66.5% |
| 11 | Contra Costa County Estimated | 2,684 | +5.5% |
| 12 | Tulare County Estimated | 2,403 | -29% |
| 13 | San Mateo County Estimated | 2,234 | -16.3% |
| 14 | San Joaquin County Estimated | 2,173 | -39.9% |
| 15 | Monterey County Estimated | 2,021 | -30.5% |
| 16 | Santa Barbara County Estimated | 1,629 | -11.5% |
| 17 | Merced County Estimated | 1,424 | -26.3% |
| 18 | Stanislaus County Estimated | 1,199 | -54.9% |
| 19 | Solano County Estimated | 1,035 | -3.3% |
| 20 | Ventura County Estimated | 971 | -53.3% |
| 21 | Kings County Estimated | 962 | -19.7% |
| 22 | San Francisco County Estimated | 857 | -48% |
| 23 | Madera County Estimated | 629 | -27.2% |
| 24 | Yolo County Estimated | 406 | -29.9% |
| 25 | Yuba County Estimated | 349 | -34.6% |
| 26 | Imperial County Estimated | 325 | -77.1% |
| 27 | San Benito County Estimated | 318 | -25.2% |
| 28 | Sutter County Estimated | 304 | -11.9% |
| 29 | Santa Cruz County Estimated | 118 | -61.4% |
| 30 | Colusa County Estimated | 97 | -23% |
| 31 | Glenn County Estimated | 64 | -52.9% |
| 32 | Mono County Estimated | 54 | -29.9% |
| 33 | Lassen County Estimated | 6 | -92.8% |
| 34 | Sierra County Estimated | -16 | +27.3% |
| 35 | Alpine County Estimated | -29 | -866.7% |
| 36 | Marin County Estimated | -32 | +72.9% |
| 37 | Trinity County Estimated | -54 | +35.7% |
| 38 | Modoc County Estimated | -64 | -77.8% |
| 39 | Mariposa County Estimated | -84 | -71.4% |
| 40 | Napa County Estimated | -89 | +52.9% |
| 41 | Inyo County Estimated | -92 | -736.4% |
| 42 | Del Norte County Estimated | -98 | -151.3% |
| 43 | Plumas County Estimated | -101 | -74.1% |
| 44 | Sonoma County Estimated | -144 | +63.8% |
| 45 | Tehama County Estimated | -150 | -600% |
| 46 | Placer County Estimated | -187 | -1,235.7% |
| 47 | Amador County Estimated | -190 | -5.6% |
| 48 | Mendocino County Estimated | -191 | -114.6% |
| 49 | Lake County Estimated | -208 | -12.4% |
| 50 | Calaveras County Estimated | -227 | -26.8% |
| 51 | San Luis Obispo County Estimated | -245 | -12.4% |
| 52 | Siskiyou County Estimated | -263 | -17.4% |
| 53 | Humboldt County Estimated | -270 | -76.5% |
| 54 | Tuolumne County Estimated | -365 | -64.4% |
| 55 | El Dorado County Estimated | -386 | -62.2% |
| 56 | Nevada County Estimated | -422 | -53.5% |
| 57 | Butte County Estimated | -483 | -257.8% |
| 58 | Shasta County Estimated | -792 | -71.1% |
Other periods
About this ranking
Estimated births minus deaths of residents from July 1 of the previous year through June 30 of the reported year. A negative value means more deaths than births.
Equals births_july_june minus deaths_july_june for the same place and year. Not a calendar-year figure.
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. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.Citation styles
APA 7
U.S. Census Bureau. (2026). Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021 (Counties in California by natural change, July to June, 2021) [Data set]. Retrieved October 12, 2026, from https://www.census.gov/programs-surveys/popest/data/data-sets.html
MLA 9
Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in California by natural change, July to June, 2021. U.S. Census Bureau, 26 Mar. 2026, https://www.census.gov/programs-surveys/popest/data/data-sets.html. Invokely, https://invokely.ai/rankings/natural-change-july-june/california-counties?period=2021. Accessed 12 Oct. 2026.
Chicago (author-date)
U.S. Census Bureau. 2026. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Counties in California by natural change, July to June, 2021. Dataset. Accessed October 12, 2026. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Also distributed by Invokely, https://invokely.ai/rankings/natural-change-july-june/california-counties?period=2021.
Harvard
U.S. Census Bureau (2026) Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021, Counties in California by natural change, July to June, 2021 [Dataset]. Available at: https://www.census.gov/programs-surveys/popest/data/data-sets.html, via Invokely: https://invokely.ai/rankings/natural-change-july-june/california-counties?period=2021 (Accessed: 12 October 2026).
BibTeX
@misc{census_counties_in_california_by_2021,
author = {{U.S. Census Bureau}},
title = {{Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in California by natural change, July to June, 2021}},
year = {2026},
howpublished = {Data set},
url = {https://www.census.gov/programs-surveys/popest/data/data-sets.html},
urldate = {2026-10-12},
note = {Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/california-counties?period=2021. Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. Retrieved 2026-10-12.},
}
RIS
TY - DATA
AU - U.S. Census Bureau
TI - Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021: Counties in California by natural change, July to June, 2021
PY - 2026
DA - 2026/03/26
PB - U.S. Census Bureau
DB - Invokely
UR - https://www.census.gov/programs-surveys/popest/data/data-sets.html
L2 - https://invokely.ai/rankings/natural-change-july-june/california-counties?period=2021
Y2 - 2026/10/12
N1 - Accessed via Invokely, https://invokely.ai/rankings/natural-change-july-june/california-counties?period=2021.
N1 - Publisher attribution: U.S. Census Bureau. Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. https://www.census.gov/programs-surveys/popest/data/data-sets.html. 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 natural change, July to June using official data, and cite the source.
rank_places {"indicator":"natural_change_july_june","level":"province","within":"California","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=natural_change_july_june&level=province&within=California&limit=10Questions
Which county has the highest natural change, July to June?
San Diego County, with 9,799 in 2021, according to the U.S. Census Bureau.
Which county has the lowest natural change, July to June?
Shasta County, with -792 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, Population Estimates Program: natural change (births minus deaths), July 1 of the previous year to June 30 of the reported year; vintage 2020 files for 2011 to 2020 and the latest 2020s vintage from 2021. Retrieved 2026-10-12.