County Data & Maps

With funding from the David and Lucile Packard Foundation, AIR has developed county-specific datasets and GIS maps to support preschool planning for all 58 counties in California. The supply and demand data provide a realistic assessment of the current profile of early care and education in the county.  The data can help planners target new resources to the communities where they are most needed.

County Supply and Demand Data. For each county in California, AIR has compiled early care and education supply and demand data at the zip code level, accessible through the county profile pages (see below). Each county needs assessment includes demand data (e.g., births and school enrollment) and licensed supply data (e.g., enrollment in State Preschool, Head Start, General Child Care, and other licensed programs). To help counties prioritize high-need areas, the datasets include enrollment in low Academic Performance Index (API) 1 - 3 and 1 - 5 schools, the percentage of four-year-olds who qualify for Free and Reduced-Price Lunch, the percentage of English Language Learners, and the estimated percentage of four-year-olds living in Title I school attendance areas.

Zip by zip supply and demand data available here.

County GIS Maps. Based on the most current data, AIR has generated GIS maps for each county (click on your county below). The maps are color-coded to illustrate the areas of the county where there is the greatest unmet need for early care and education and the largest number and percentage of children in low API school attendance areas. Before accessing your county data, download the Supply and Demand Assessment Instructions here. To help determine areas of the county that may be candidates for early phase-in of preschool, download the Criteria for Determining Priorities Checklist here. Do you need assistance with your county data? Contact Jennifer Anthony.  

Search County
County Namesort iconBirths, 2002% Ks in API 1-3 Schools% Ks in Title 1 Schools% 4s Served in HS, SP, or GCC
California State-Wide529,245286527
Alameda County21,723244423
Alpine County90950
Amador County25908239
Butte County2,250237140
Calaveras County32106364
Colusa County299299145
Contra Costa County13,232243621
Del Norte County282289248
El Dorado County1,75555528
Fresno County14,735497840
Glenn County410139841
Humboldt County1,379199140
Imperial County2,644519128
Inyo County169810062
Kern County12,107477331
Kings County2,282318444
Lake County628368442
Lassen County28999256
Los Angeles County150,437347429
Madera County2,127459132
Marin County2,75464914
Mariposa County125198151
Mendocino County1,062429049
Merced County3,993339539
Modoc County5829695
Mono County129119644
Monterey County6,874627737
Napa County1,556154826
Nevada County77215343
Orange County44,689215316
Placer County3,50243912
Plumas County18408939
Riverside County26,557316528
Sacramento County19,121194834
San Benito County903299116
San Bernardino County29,535367733
San Diego County43,711205823
San Francisco County8,308165028
San Joaquin County10,107386623
San Luis Obispo County2,35016730
San Mateo County9,347124718
Santa Barbara County5,680297330
Santa Clara County27,593134415
Santa Cruz County3,590386726
Shasta County1,94738641
Sierra County23010026
Siskiyou County405198942
Solano County5,839315118
Sonoma County5,644126517
Stanislaus County7,921298330
Sutter County1,252288241
Tehama County668249649
Trinity County9209861
Tulare County7,378438844
Tuolumne County43208841
Ventura County11,675245519
Yolo County2,362316227
Yuba County1,132188147