Counties in California by school enrolment, children aged 3 and 4

Alpine County had the highest school enrolment, children aged 3 and 4 of 57 counties in 2022, at 88.4%. Trinity County had the lowest, at 5.6%. The median was 40.6% and the figure for California was 44.7%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest88.4Alpine County
Median40.657 counties
California44.7History

Map of counties, 2022

Alameda County: 55.4 %Alpine County: 88.4 %Amador County: 54.1 %Butte County: 40.6 %Calaveras County: 29.7 %Colusa County: 38.6 %Contra Costa County: 51.9 %Del Norte County: 45.2 %El Dorado County: 54.5 %Fresno County: 35.8 %Glenn County: 24.3 %Humboldt County: 44 %Imperial County: 37.1 %Inyo County: 37.5 %Kern County: 31.5 %Kings County: 26.7 %Lake County: 38.3 %Lassen County: 34 %Los Angeles County: 48.8 %Madera County: 37.1 %Marin County: 64.3 %Mariposa County: 38.1 %Mendocino County: 46.2 %Merced County: 35.2 %Modoc County: 59.7 %Mono County: 76.3 %Monterey County: 32.7 %Napa County: 49.2 %Nevada County: 54.5 %Orange County: 54.3 %Placer County: 48.3 %Plumas County: 24 %Riverside County: 29.9 %Sacramento County: 39.2 %San Benito County: 40.3 %San Bernardino County: 33.3 %San Diego County: 46.5 %San Francisco County: 74.1 %San Joaquin County: 38.2 %San Luis Obispo County: 48.4 %San Mateo County: 61.1 %Santa Barbara County: 42.4 %Santa Clara County: 56.4 %Santa Cruz County: 43 %Shasta County: 42 %Siskiyou County: 37 %Solano County: 38.2 %Sonoma County: 45.7 %Stanislaus County: 33.9 %Sutter County: 40.7 %Tehama County: 38.9 %Trinity County: 5.6 %Tulare County: 31.5 %Tuolumne County: 51.7 %Ventura County: 40.1 %Yolo County: 53.1 %Yuba County: 38.7 %
  • Under 34
  • 34 to 38
  • 38 to 41
  • 41 to 47
  • 47 to 54
  • 54 and over
  • No data
%, 2022. Hatched areas have no value for this period. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Alpine County: 88.4 %Alpine County88.4Mono County: 76.3 %Mono County76.3San Francisco County: 74.1 %San Francisco County74.1Marin County: 64.3 %Marin County64.3San Mateo County: 61.1 %San Mateo County61.1Modoc County: 59.7 %Modoc County59.7Santa Clara County: 56.4 %Santa Clara County56.4Alameda County: 55.4 %Alameda County55.4Nevada County: 54.5 %Nevada County54.5El Dorado County: 54.5 %El Dorado County54.5Orange County: 54.3 %Orange County54.3Amador County: 54.1 %Amador County54.1Yolo County: 53.1 %Yolo County53.1Contra Costa County: 51.9 %Contra Costa County51.9Tuolumne County: 51.7 %Tuolumne County51.7Napa County: 49.2 %Napa County49.2Los Angeles County: 48.8 %Los Angeles County48.8San Luis Obispo County: 48.4 %San Luis Obispo County48.4Placer County: 48.3 %Placer County48.3San Diego County: 46.5 %San Diego County46.5Mendocino County: 46.2 %Mendocino County46.2Sonoma County: 45.7 %Sonoma County45.7Del Norte County: 45.2 %Del Norte County45.2Humboldt County: 44 %Humboldt County44Santa Cruz County: 43 %Santa Cruz County43Santa Barbara County: 42.4 %Santa Barbara County42.4Shasta County: 42 %Shasta County42Sutter County: 40.7 %Sutter County40.7Butte County: 40.6 %Butte County40.6San Benito County: 40.3 %San Benito County40.3Ventura County: 40.1 %Ventura County40.1Sacramento County: 39.2 %Sacramento County39.2Tehama County: 38.9 %Tehama County38.9Yuba County: 38.7 %Yuba County38.7Colusa County: 38.6 %Colusa County38.6Lake County: 38.3 %Lake County38.3Solano County: 38.2 %Solano County38.2San Joaquin County: 38.2 %San Joaquin County38.2Mariposa County: 38.1 %Mariposa County38.1Inyo County: 37.5 %Inyo County37.5Imperial County: 37.1 %Imperial County37.1Madera County: 37.1 %Madera County37.1Siskiyou County: 37 %Siskiyou County37Fresno County: 35.8 %Fresno County35.8Merced County: 35.2 %Merced County35.2Lassen County: 34 %Lassen County34Stanislaus County: 33.9 %Stanislaus County33.9San Bernardino County: 33.3 %San Bernardino County33.3Monterey County: 32.7 %Monterey County32.7Kern County: 31.5 %Kern County31.5Tulare County: 31.5 %Tulare County31.5Riverside County: 29.9 %Riverside County29.9Calaveras County: 29.7 %Calaveras County29.7Kings County: 26.7 %Kings County26.7Glenn County: 24.3 %Glenn County24.3Plumas County: 24 %Plumas County24Trinity County: 5.6 %Trinity County5.6Alpine County: 88.4 %Alpine County88.4Mono County: 76.3 %Mono County76.3San Francisco County: 74.1 %San Francisco County74.1Marin County: 64.3 %Marin County64.3San Mateo County: 61.1 %San Mateo County61.1Modoc County: 59.7 %Modoc County59.7Santa Clara County: 56.4 %Santa Clara County56.4Alameda County: 55.4 %Alameda County55.4Nevada County: 54.5 %Nevada County54.5El Dorado County: 54.5 %El Dorado County54.5Orange County: 54.3 %Orange County54.3Amador County: 54.1 %Amador County54.1Yolo County: 53.1 %Yolo County53.1Contra Costa County: 51.9 %Contra Costa County51.9Tuolumne County: 51.7 %Tuolumne County51.7Napa County: 49.2 %Napa County49.2Los Angeles County: 48.8 %Los Angeles County48.8San Luis Obispo County: 48.4 %San Luis Obispo County48.4Placer County: 48.3 %Placer County48.3San Diego County: 46.5 %San Diego County46.5Mendocino County: 46.2 %Mendocino County46.2Sonoma County: 45.7 %Sonoma County45.7Del Norte County: 45.2 %Del Norte County45.2Humboldt County: 44 %Humboldt County44Santa Cruz County: 43 %Santa Cruz County43Santa Barbara County: 42.4 %Santa Barbara County42.4Shasta County: 42 %Shasta County42Sutter County: 40.7 %Sutter County40.7Butte County: 40.6 %Butte County40.6San Benito County: 40.3 %San Benito County40.3Ventura County: 40.1 %Ventura County40.1Sacramento County: 39.2 %Sacramento County39.2Tehama County: 38.9 %Tehama County38.9Yuba County: 38.7 %Yuba County38.7Colusa County: 38.6 %Colusa County38.6Lake County: 38.3 %Lake County38.3Solano County: 38.2 %Solano County38.2San Joaquin County: 38.2 %San Joaquin County38.2Mariposa County: 38.1 %Mariposa County38.1Inyo County: 37.5 %Inyo County37.5Imperial County: 37.1 %Imperial County37.1Madera County: 37.1 %Madera County37.1Siskiyou County: 37 %Siskiyou County37Fresno County: 35.8 %Fresno County35.8Merced County: 35.2 %Merced County35.2Lassen County: 34 %Lassen County34Stanislaus County: 33.9 %Stanislaus County33.9San Bernardino County: 33.3 %San Bernardino County33.3Monterey County: 32.7 %Monterey County32.7Kern County: 31.5 %Kern County31.5Tulare County: 31.5 %Tulare County31.5Riverside County: 29.9 %Riverside County29.9Calaveras County: 29.7 %Calaveras County29.7Kings County: 26.7 %Kings County26.7Glenn County: 24.3 %Glenn County24.3Plumas County: 24 %Plumas County24Trinity County: 5.6 %Trinity County5.6
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Alpine County88.4+1.2 pts
2Mono County76.3-17.2 pts
3San Francisco County74.1+0.3 pts
4Marin County64.3+0.3 pts
5San Mateo County61.1-1.1 pts
6Modoc County59.7+7.8 pts
7Santa Clara County56.4-0.3 pts
8Alameda County55.4-0.3 pts
9Nevada County54.5-5.8 pts
10El Dorado County54.5-4.6 pts
11Orange County54.3+0.5 pts
12Amador County54.1+10.2 pts
13Yolo County53.1+1.5 pts
14Contra Costa County51.9+0.1 pts
15Tuolumne County51.7-9.2 pts
16Napa County49.2+1.6 pts
17Los Angeles County48.8-1.1 pts
18San Luis Obispo County48.4-0.9 pts
19Placer County48.3-1.3 pts
20San Diego County46.5-0.7 pts
21Mendocino County46.2-0.9 pts
22Sonoma County45.7-1.7 pts
23Del Norte County45.2+8 pts
24Humboldt County44-1.2 pts
25Santa Cruz County43-2.1 pts
26Santa Barbara County42.4+0.4 pts
27Shasta County42+0.3 pts
28Sutter County40.7-0.4 pts
29Butte County40.6-2 pts
30San Benito County40.3+7.5 pts
31Ventura County40.1-2.9 pts
32Sacramento County39.2-1.1 pts
33Tehama County38.9-9.5 pts
34Yuba County38.7-1.5 pts
35Colusa County38.6-13 pts
36Lake County38.3-4.1 pts
37Solano County38.2-1.4 pts
38San Joaquin County38.2+0.4 pts
39Mariposa County38.1+10.4 pts
40Inyo County37.5-19.7 pts
41Imperial County37.1-4.9 pts
41Madera County37.1-1.1 pts
43Siskiyou County37-3.9 pts
44Fresno County35.8-1.3 pts
45Merced County35.2-3.8 pts
46Lassen County34-3.3 pts
47Stanislaus County33.9-2.7 pts
48San Bernardino County33.3-0 pts
49Monterey County32.7-3.1 pts
50Kern County31.5+0.1 pts
50Tulare County31.5+0.3 pts
52Riverside County29.9-1.1 pts
53Calaveras County29.7-15.1 pts
54Kings County26.7-3.4 pts
55Glenn County24.3+6.5 pts
56Plumas County24-4 pts
57Trinity County5.6+1.2 pts

Other periods

About this ranking

Children aged 3 and 4 enrolled in public or private school, including nursery school and preschool, at any time in the three months before the interview, as a percentage of all children aged 3 and 4. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

Reported by households, so it includes private nursery schools. Small counties have only a few dozen children in the sample, and their rates can swing widely between periods.

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 B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs (Counties in California by school enrolment, children aged 3 and 4, 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat

MLA 9

American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs, Counties in California by school enrolment, children aged 3 and 4, 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/california-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. Counties in California by school enrolment, children aged 3 and 4, 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Also distributed by Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/california-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs, Counties in California by school enrolment, children aged 3 and 4, 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat, via Invokely: https://invokely.ai/rankings/preschool-enrollment-ages-3-4/california-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_california_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs: Counties in California by school enrolment, children aged 3 and 4, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/california-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs: Counties in California by school enrolment, children aged 3 and 4, 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat
L2  - https://invokely.ai/rankings/preschool-enrollment-ages-3-4/california-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/preschool-enrollment-ages-3-4/california-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b14003.dat. Retrieved 2026-10-12.
ER  - 
Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

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 school enrolment, children aged 3 and 4 using official data, and cite the source.
rank_places {"indicator":"preschool_enrolment_rate_3_4","level":"province","within":"California","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=preschool_enrolment_rate_3_4&level=province&within=California&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest school enrolment, children aged 3 and 4?

Alpine County, with 88.4% in 2022, according to the U.S. Census Bureau.

Which county has the lowest school enrolment, children aged 3 and 4?

Trinity County, with 5.6% in 2022.

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 B14003: children aged 3 and 4 enrolled in public or private school as a percentage of all children aged 3 and 4, calculated with stored inputs. Retrieved 2026-10-12.

School enrolment, children aged 3 and 4: other rankings

Counties in California: more rankings