Largest School Districts in California 2026: Enrollment Rankings & Charts
California has 936 elementary, high school, and unified districts in the 2025–26 district-office dataset. Enrollment is highly uneven: Los Angeles Unified serves almost half a million students, while most districts enroll fewer than 5,000.
The ranking uses certified Fall Census Day enrollment from the California Department of Education. The full table covers the 100 largest school districts and distinguishes unified, elementary, and high school systems so grade-span differences remain visible.
California District Enrollment Statistics
District counts exclude county offices of education, State Board of Education entities, and state special schools.
20 Largest California School Districts
Ranked by 2025–26 Fall Census Day enrollment.
The chart summarizes the first 20 positions. Together, these districts enroll 1,451,280 students, or 25.3% of California public enrollment.
Scale differences within the leading group
- Los Angeles Unified enrolls 497,105 students, 4.43 times the enrollment of San Diego Unified.
- The first five districts account for 14.1% of statewide public enrollment.
- The gap between ranks 1 and 20 is 462,243 students.
Top 100 California School District Enrollment Ranking
The ranking includes only elementary, high school, and unified districts. State share uses California’s full 2025–26 public enrollment total.
| Rank | District | County | Type | Enrollment | State share | Charter share |
|---|---|---|---|---|---|---|
| 1 | Los Angeles Unified | Los Angeles | Unified | 497,105 | 8.67% | 29.0% |
| 2 | San Diego Unified | San Diego | Unified | 112,250 | 1.96% | 16.4% |
| 3 | Fresno Unified | Fresno | Unified | 70,163 | 1.22% | 4.8% |
| 4 | Elk Grove Unified | Sacramento | Unified | 65,483 | 1.14% | 1.9% |
| 5 | Long Beach Unified | Los Angeles | Unified | 61,679 | 1.08% | 0.5% |
| 6 | San Francisco Unified | San Francisco | Unified | 55,237 | 0.96% | 12.2% |
| 7 | San Juan Unified | Sacramento | Unified | 52,069 | 0.91% | 24.2% |
| 8 | Corona-Norco Unified | Riverside | Unified | 48,485 | 0.85% | 0.0% |
| 9 | San Bernardino City Unified | San Bernardino | Unified | 48,079 | 0.84% | 9.8% |
| 10 | Capistrano Unified | Orange | Unified | 46,429 | 0.81% | 14.3% |
| 11 | Clovis Unified | Fresno | Unified | 44,091 | 0.77% | 1.9% |
| 12 | Oakland Unified | Alameda | Unified | 43,484 | 0.76% | 22.1% |
| 13 | Kern High | Kern | High school | 43,356 | 0.76% | 1.1% |
| 14 | Sacramento City Unified | Sacramento | Unified | 41,868 | 0.73% | 13.7% |
| 15 | Irvine Unified | Orange | Unified | 38,407 | 0.67% | 1.7% |
| 16 | Riverside Unified | Riverside | Unified | 38,110 | 0.66% | 2.0% |
| 17 | Stockton Unified | San Joaquin | Unified | 38,043 | 0.66% | 19.4% |
| 18 | Santa Ana Unified | Orange | Unified | 36,134 | 0.63% | 7.6% |
| 19 | Garden Grove Unified | Orange | Unified | 35,946 | 0.63% | 0.0% |
| 20 | Sweetwater Union High | San Diego | High school | 34,862 | 0.61% | 4.2% |
| 21 | Poway Unified | San Diego | Unified | 34,087 | 0.59% | 0.0% |
| 22 | Fremont Unified | Alameda | Unified | 32,883 | 0.57% | 1.2% |
| 23 | Fontana Unified | San Bernardino | Unified | 31,958 | 0.56% | 1.1% |
| 24 | Twin Rivers Unified | Sacramento | Unified | 31,502 | 0.55% | 27.7% |
| 25 | Moreno Valley Unified | Riverside | Unified | 30,413 | 0.53% | 0.0% |
| 26 | Mt. Diablo Unified | Contra Costa | Unified | 30,330 | 0.53% | 3.2% |
| 27 | Lodi Unified | San Joaquin | Unified | 30,040 | 0.52% | 11.3% |
| 28 | West Contra Costa Unified | Contra Costa | Unified | 28,616 | 0.50% | 13.5% |
| 29 | Visalia Unified | Tulare | Unified | 28,448 | 0.50% | 3.4% |
| 30 | Chula Vista Elementary | San Diego | Elementary | 28,346 | 0.49% | 23.3% |
| 31 | Temecula Valley Unified | Riverside | Unified | 28,031 | 0.49% | 6.3% |
| 32 | San Ramon Valley Unified | Contra Costa | Unified | 27,986 | 0.49% | 0.0% |
| 33 | Bakersfield City | Kern | Elementary | 27,410 | 0.48% | 0.0% |
| 34 | Chino Valley Unified | San Bernardino | Unified | 26,562 | 0.46% | 3.6% |
| 35 | Manteca Unified | San Joaquin | Unified | 25,561 | 0.45% | 0.0% |
| 36 | Glendale Unified | Los Angeles | Unified | 25,281 | 0.44% | 0.0% |
| 37 | Desert Sands Unified | Riverside | Unified | 25,248 | 0.44% | 7.9% |
| 38 | Anaheim Union High | Orange | High school | 25,177 | 0.44% | 0.0% |
| 39 | Orange Unified | Orange | Unified | 24,622 | 0.43% | 9.1% |
| 40 | Hesperia Unified | San Bernardino | Unified | 24,592 | 0.43% | 6.2% |
| 41 | San Jose Unified | Santa Clara | Unified | 24,311 | 0.42% | 0.9% |
| 42 | Hemet Unified | Riverside | Unified | 22,791 | 0.40% | 3.4% |
| 43 | Downey Unified | Los Angeles | Unified | 22,661 | 0.40% | 0.0% |
| 44 | Rialto Unified | San Bernardino | Unified | 22,621 | 0.39% | 0.0% |
| 45 | East Side Union High | Santa Clara | High school | 22,560 | 0.39% | 13.6% |
| 46 | Folsom-Cordova Unified | Sacramento | Unified | 22,509 | 0.39% | 1.5% |
| 47 | Placentia-Yorba Linda Unified | Orange | Unified | 22,295 | 0.39% | 2.6% |
| 48 | Saddleback Valley Unified | Orange | Unified | 22,180 | 0.39% | 0.0% |
| 49 | Chaffey Joint Union High | San Bernardino | High school | 22,072 | 0.39% | 0.0% |
| 50 | Torrance Unified | Los Angeles | Unified | 22,014 | 0.38% | 0.0% |
| 51 | Grossmont Union High | San Diego | High school | 22,002 | 0.38% | 25.6% |
| 52 | Murrieta Valley Unified | Riverside | Unified | 21,603 | 0.38% | 0.0% |
| 53 | Antelope Valley Union High | Los Angeles | High school | 21,578 | 0.38% | 6.1% |
| 54 | Tustin Unified | Orange | Unified | 21,021 | 0.37% | 0.0% |
| 55 | William S. Hart Union High | Los Angeles | High school | 20,995 | 0.37% | 4.1% |
| 56 | Palmdale Elementary | Los Angeles | Elementary | 20,875 | 0.36% | 20.5% |
| 57 | Lake Elsinore Unified | Riverside | Unified | 20,821 | 0.36% | 2.5% |
| 58 | Madera Unified | Madera | Unified | 20,759 | 0.36% | 5.3% |
| 59 | Beaumont Unified | Riverside | Unified | 20,725 | 0.36% | 38.8% |
| 60 | Vista Unified | San Diego | Unified | 20,366 | 0.36% | 13.3% |
| 61 | Pomona Unified | Los Angeles | Unified | 20,058 | 0.35% | 10.1% |
| 62 | Fairfield-Suisun Unified | Solano | Unified | 20,010 | 0.35% | 0.0% |
| 63 | Hayward Unified | Alameda | Unified | 19,631 | 0.34% | 12.8% |
| 64 | Palm Springs Unified | Riverside | Unified | 19,621 | 0.34% | 4.4% |
| 65 | Panama-Buena Vista Union | Kern | Elementary | 19,351 | 0.34% | 0.0% |
| 66 | Compton Unified | Los Angeles | Unified | 19,325 | 0.34% | 15.8% |
| 67 | Redlands Unified | San Bernardino | Unified | 19,268 | 0.34% | 1.4% |
| 68 | Val Verde Unified | Riverside | Unified | 18,717 | 0.33% | 0.0% |
| 69 | Cajon Valley Union | San Diego | Elementary | 18,709 | 0.33% | 14.1% |
| 70 | San Marcos Unified | San Diego | Unified | 18,588 | 0.32% | 0.5% |
| 71 | Montebello Unified | Los Angeles | Unified | 18,445 | 0.32% | 0.0% |
| 72 | Colton Joint Unified | San Bernardino | Unified | 17,830 | 0.31% | 0.0% |
| 73 | Jurupa Unified | Riverside | Unified | 17,486 | 0.31% | 0.0% |
| 74 | Newport-Mesa Unified | Orange | Unified | 17,408 | 0.30% | 0.0% |
| 75 | ABC Unified | Los Angeles | Unified | 17,300 | 0.30% | 0.0% |
| 76 | Santa Maria-Bonita | Santa Barbara | Elementary | 17,286 | 0.30% | 0.0% |
| 77 | Oceanside Unified | San Diego | Unified | 17,165 | 0.30% | 15.5% |
| 78 | Ontario-Montclair | San Bernardino | Elementary | 17,135 | 0.30% | 0.0% |
| 79 | Maricopa Unified | Kern | Unified | 16,739 | 0.29% | 98.2% |
| 80 | Natomas Unified | Sacramento | Unified | 16,664 | 0.29% | 34.8% |
| 81 | Oxnard Union High | Ventura | High school | 16,604 | 0.29% | 5.2% |
| 82 | Pajaro Valley Unified | Santa Cruz | Unified | 16,452 | 0.29% | 11.0% |
| 83 | Napa Valley Unified | Napa | Unified | 16,381 | 0.29% | 1.7% |
| 84 | Escondido Union | San Diego | Elementary | 16,376 | 0.29% | 18.0% |
| 85 | Antioch Unified | Contra Costa | Unified | 16,081 | 0.28% | 5.7% |
| 86 | Alvord Unified | Riverside | Unified | 16,043 | 0.28% | 0.0% |
| 87 | Central Unified | Fresno | Unified | 16,008 | 0.28% | 0.0% |
| 88 | Dehesa Elementary | San Diego | Elementary | 15,904 | 0.28% | 96.4% |
| 89 | Modesto City High | Stanislaus | High school | 15,865 | 0.28% | 4.1% |
| 90 | Coachella Valley Unified | Riverside | Unified | 15,618 | 0.27% | 1.3% |
| 91 | Modesto City Elementary | Stanislaus | Elementary | 15,457 | 0.27% | 7.6% |
| 92 | Conejo Valley Unified | Ventura | Unified | 15,442 | 0.27% | 0.0% |
| 93 | Salinas Union High | Monterey | High school | 15,345 | 0.27% | 0.0% |
| 94 | Hacienda la Puente Unified | Los Angeles | Unified | 15,148 | 0.26% | 0.0% |
| 95 | Simi Valley Unified | Ventura | Unified | 15,081 | 0.26% | 0.0% |
| 96 | Apple Valley Unified | San Bernardino | Unified | 15,067 | 0.26% | 9.9% |
| 97 | West Covina Unified | Los Angeles | Unified | 15,063 | 0.26% | 49.2% |
| 98 | Tracy Joint Unified | San Joaquin | Unified | 14,742 | 0.26% | 10.4% |
| 99 | Lucerne Valley Unified | San Bernardino | Unified | 14,625 | 0.26% | 92.1% |
| 100 | Alhambra Unified | Los Angeles | Unified | 14,505 | 0.25% | 0.0% |
District type and charter reporting
- The top 100 contain 79 unified, 11 high school, and 10 elementary districts.
- The rank-100 threshold is 14,505 students.
- Charter share is shown because district-level totals can include students enrolled in charter schools assigned to the district reporting entity.
District Size Distribution
Most California districts are small by enrollment, but the largest size bands serve a large share of students.
Number of Districts by Enrollment Band
All 936 elementary, high school, and unified districts.
District count and student concentration move in opposite directions: the smallest bands contain many districts but a limited share of statewide enrollment.
Enrollment is concentrated above the median district size
- 354 districts enroll fewer than 1,000 students, but they account for only 1.9% of statewide enrollment.
- Districts with 10,000 to 24,999 students form the largest enrollment block at 32.2% of the statewide total.
Enrollment Concentration Across the Ranking
Cumulative shares show how much of California public enrollment is carried by a limited number of districts.
Counties with the Most Top-100 Districts
District count and combined enrollment measure different forms of county concentration.
| County | Top-100 districts | Combined enrollment | State share |
|---|---|---|---|
| Los Angeles | 15 | 812,032 | 14.17% |
| Riverside | 14 | 343,712 | 6.00% |
| San Diego | 11 | 338,655 | 5.91% |
| San Bernardino | 11 | 259,809 | 4.53% |
| Orange | 10 | 289,619 | 5.05% |
| Sacramento | 6 | 230,095 | 4.01% |
| San Joaquin | 4 | 108,386 | 1.89% |
| Kern | 4 | 106,856 | 1.86% |
| Contra Costa | 4 | 103,013 | 1.80% |
| Fresno | 3 | 130,262 | 2.27% |
| Alameda | 3 | 95,998 | 1.67% |
| Ventura | 3 | 47,127 | 0.82% |
County count does not equal enrollment weight
- Los Angeles places the most districts in the top 100, with 15.
- Los Angeles County has the largest combined top-100 enrollment at 812,032 students.
High Charter Shares Among Large Districts
A high charter share can raise a district reporting total even when students attend schools operated through separate charter organizations.
| Rank | District | County | Enrollment | Charter students | Charter share |
|---|---|---|---|---|---|
| 79 | Maricopa Unified | Kern | 16,739 | 16,438 | 98.2% |
| 88 | Dehesa Elementary | San Diego | 15,904 | 15,324 | 96.4% |
| 99 | Lucerne Valley Unified | San Bernardino | 14,625 | 13,467 | 92.1% |
| 97 | West Covina Unified | Los Angeles | 15,063 | 7,410 | 49.2% |
| 59 | Beaumont Unified | Riverside | 20,725 | 8,047 | 38.8% |
How District Structure Shapes the Ranking
Enrollment rank describes the scale of the reporting system, not school quality or student outcomes.
Unified districts dominate the leading positions
Unified systems usually serve kindergarten through grade 12, giving them a wider grade span than elementary-only or high-school-only districts.
City and district boundaries do not match
A district may serve several cities or only part of one city. Metropolitan enrollment cannot be inferred from a single district name.
Charter authorizing affects reported scale
District totals can include charter students assigned to the district record. Charter share adds context to unusually high totals for some smaller geographic systems.
Enrollment is not a performance measure
The ranking does not describe test scores, graduation rates, staffing levels, funding adequacy, class size, or school safety.
Source Years and Definitions
California Department of Education, California School District Offices 2025–26. Enrollment and charter counts are based on certified CALPADS Fall 1 Census Day records.
Fall Census Day was the first Wednesday in October 2025. The 2026 title refers to the publication cycle, while the source is the 2025–26 academic year.
The analysis includes 515 elementary districts, 76 high school districts, and 345 unified districts. County offices, state special schools, and State Board of Education entities are excluded from the district ranking.
Districts are sorted by Enroll Total from highest to lowest. Ties are ordered alphabetically. Displayed shares are rounded, while sort values retain greater precision.
Charter share equals Enroll Charter divided by Enroll Total for the district record. It is a reporting-composition measure, not a measure of district-operated school enrollment.
The full source contains 936 school districts. The publication ranking is explicitly limited to the largest 100 districts and does not represent every California district.
CDE Census Day Enrollment Data · California School District Offices 2025–26 · CDE Largest and Smallest Public School Districts