Ask which American school district is the most diverse and the honest answer requires a definition, because "diverse" can mean a lot of things. If it means a student body spread most evenly across racial and ethnic groups, so that two students picked at random are least likely to share a background, then the answer is not a coastal megacity. It is Hawaii.
Using a diversity index, the same measure behind our look at the most diverse public high schools in America, here are the most diverse large school districts in the country, limited to the districts that enroll at least 50,000 students.
| Rank | District | State | Students | Index | W / B / H / A / 2+ |
|---|---|---|---|---|---|
| 1 | Hawaii Department of Education | HI | 167,071 | 0.793 | 11 / 1 / 19 / 23 / 20 |
| 2 | Howard County Public Schools | MD | 57,565 | 0.769 | 29 / 25 / 14 / 24 / 7 |
| 3 | Fort Bend ISD | TX | 79,663 | 0.755 | 13 / 28 / 27 / 28 / 4 |
| 4 | Elk Grove Unified | CA | 63,093 | 0.751 | 15 / 10 / 28 / 36 / 9 |
| 5 | Montgomery County Public Schools | MD | 159,181 | 0.750 | 23 / 22 / 36 / 14 / 5 |
| 6 | NYC Geographic District 2 | NY | 54,599 | 0.748 | 24 / 13 / 37 / 20 / 5 |
| 7 | Katy ISD | TX | 96,111 | 0.746 | 25 / 15 / 36 / 18 / 5 |
| 8 | Prince William County Public Schools | VA | 90,242 | 0.743 | 26 / 19 / 37 / 12 / 6 |
| 9 | Fairfax County Public Schools | VA | 179,323 | 0.739 | 36 / 10 / 29 / 18 / 6 |
| 9 | Henrico County Public Schools | VA | 50,518 | 0.739 | 31 / 35 / 14 / 14 / 6 |
| 11 | Seattle School District No. 1 | WA | 50,773 | 0.735 | 44 / 14 / 15 / 12 / 13 |
| 12 | Cobb County | GA | 104,811 | 0.733 | 32 / 29 / 26 / 6 / 6 |
| 13 | Wake County Schools | NC | 163,037 | 0.729 | 41 / 21 / 20 / 13 / 4 |
| 14 | Gwinnett County | GA | 180,522 | 0.728 | 15 / 32 / 36 / 13 / 4 |
| 15 | Loudoun County Public Schools | VA | 81,486 | 0.726 | 39 / 7 / 20 / 27 / 6 |
W / B / H / A / 2+ = percent white, Black, Hispanic, Asian, and two-or-more races. Districts enrolling at least 50,000 students. Source: NCES SY 2024-25, compiled by allk12.
Why Hawaii, and Why the Index
A diversity index measures how evenly students are spread across groups. A district that is 90% one race scores low even if it technically enrolls a little of everyone. Spread the students out and the score rises, toward a practical ceiling near 0.86 that nobody reaches.
Hawaii tops the list, at 0.793, for a reason no mainland district can replicate: it has no majority group and an enormous share of students who identify as two or more races, 20% of the state, several times the national figure. Its statewide system is also the only one of its kind, since Hawaii runs all its public schools as a single district.
The Suburbs of Washington Own the Rest
The most striking pattern is regional. Four of the fifteen most diverse large districts ring Washington, D.C.: Fairfax, Prince William, Loudoun, and Henrico, all in Virginia, joined just across the river by Maryland's Montgomery and Howard counties. Six of the top fifteen sit in the greater D.C. and Baltimore corridor. These are affluent, highly educated suburbs that have absorbed decades of immigration from Asia, Latin America, and Africa, and it shows in schools where no group dominates.
Texas contributes two fast-growing Houston-area systems, Fort Bend and Katy. Georgia contributes two Atlanta suburban county districts, Cobb and Gwinnett. Sacramento's Elk Grove and the Research Triangle's Wake County fill out a list that is, almost entirely, a map of the country's booming, immigrant-heavy suburbs rather than its old central cities.
One Caveat About New York
New York City, the nation's largest school system, does not appear here as a single entry, and that is a quirk of how the data is organized rather than a statement about the city. In federal records, the city's schools are split into dozens of geographic districts, so no single New York City row aggregates to one system. What ranks sixth above is Manhattan's District 2, one slice of the whole. Read this list as a ranking of administratively distinct districts, and understand that a unified New York City figure would sit high on it.
What these districts do is stay balanced across tens or hundreds of thousands of students. For the full underlying data, see our most diverse public schools report.
Data note: rankings use a Simpson diversity index across the seven federal race and ethnicity categories, computed on enrollment-weighted shares from NCES SY 2024-25 school-level data. The universe is districts enrolling at least 50,000 students. Virtual schools are excluded.
Sources
NCES: Common Core of Data (enrollment and racial/ethnic demographics)
NCES Condition of Education: Racial/Ethnic Enrollment in Public Schools
