School districts in New York
56% of the 1,807 populated ZIP Code areas in New York are served by more than one school district — 1,018 of them, which puts the state 20th among the fifty-two. It is organized into 663 unified districts, 13 elementary districts and 3 secondary districts, the largest being New York City Department Of Education at 3,618,620 homes. Its most divided ZIP Code area, 13021, is split between 8 districts for elementary grades alone. In 17 of them the answer for grade school is not the answer for high school. The two districts that share the most ZIP Codes here are Elmont Union Free and Sewanhaka Central High, in 6 of them.
How often a ZIP Code here crosses a district line
The state is close to the national rate of 53%. Every count below comes from the census blocks in each ZIP Code area rather than from any published table; New York City Department Of Education is the largest district in it, at 3,618,620 homes.
- ZIP Code areas with a district1,807
- Served by more than one district1,018 (56%)
- Grade school and high school differ17 (0.9%)
- No high school district named4
- Unified districts663
- Elementary districts13
- Secondary districts3
- Homes in no district at all93
The largest districts in New York
New York City Department Of Education dominates the state: at 3,618,620 homes it holds more than three times what Buffalo City does in second place. A district that size sets the answer for dozens of ZIP Code areas at once, and the areas it covers alone are counted on its own page rather than assumed from its size.
The most divided ZIP Code area in New York
ZIP Code area 13021 holds 18,827 homes and 8 districts take a real share of them for the early grades, but Auburn City holds 84% on its own at that level. This is the shape that makes a single-name lookup look right: it names Auburn City and describes most of the homes here, and silently not the rest.
Each percentage here is a share of the 18,827 homes counted in ZIP Code 13021, not the chance that any one address is in that district. Enrollment follows the street: two houses on opposite sides of the same road can be in different districts, and only the district office can say which.
Every track below is 35 cells long and stands for all 18,827 homes counted in ZIP Code 13021, so one cell is 538 homes, rounded to the nearest whole cell. Cells lit solid are the homes one district holds, and the unlit cells are the homes held by the other districts in the same list.
- Auburn City School District15,806 of 18,827 homes84%
- Union Springs Central School District1,082 of 18,827 homes5.7%
- Port Byron Central School District678 of 18,827 homes3.6%
- Skaneateles Central School District505 of 18,827 homes2.7%
- Weedsport Central School District391 of 18,827 homes2.1%
- Moravia Central School District126 of 18,827 homes0.7%
- Jordan-Elbridge Central School District125 of 18,827 homes0.7%
- Southern Cayuga Central School District114 of 18,827 homes0.6%
For grade school, an answer of one district name would be wrong for 3,021 of the 18,827 here.
How much of New York a single district name misses
Across the 1,807 ZIP Code areas in New York with homes in them, an answer of one district name misses 781,726 of the 8,488,023 homes they hold — 9.2% of the state. In 724 of those areas the single name is the whole truth; in the other 1,083 it is not.
ZIP Code 11746 · Dix Hills, New York names 4 districts. South Huntington Union Free is the largest of them for grade school, and an answer of its name alone misses 13,065 of the 22,045 homes there; Half Hollow Hills Central, Huntington Union Free and Commack Union Free hold the rest.
ZIP Code 11706 · Bay Shore, New York names 5 districts. Bay Shore Union Free is the largest of them for grade school, and an answer of its name alone misses 10,831 of the 22,013 homes there; Brentwood Union Free, Fire Island Union Free and Islip Union Free hold the rest.
In ZIP Code 14150 · Tonawanda Town, New York the largest district for grade school is Kenmore-Tonawanda Union Free, and naming it alone misses 10,472 of the 19,945 homes counted there. The rest are with Tonawanda City and Sweet Home Central.
Where a ZIP Code here names more than one district
Of the 1,807 ZIP Code areas in New York that the federal file names a district for, 1,018 name more than one school district. These are the 12 with the most, starting at 8 districts in one postal area: Auburn, North New Hyde Park and Fort Plain. Each row opens the full answer for that ZIP Code, with every district named for grade school and for high school and the share of the homes each one holds.
- ZIP Code 13021 · Auburn, New York8 districts · 18,827 homes
- ZIP Code 11040 · North New Hyde Park, New York7 districts · 14,089 homes · two bands, two answers
- ZIP Code 13339 · Fort Plain, New York7 districts · 2,831 homes
- ZIP Code 11580 · Valley Stream, New York6 districts · 13,586 homes · two bands, two answers
- ZIP Code 10570 · Pleasantville, New York6 districts · 4,600 homes
- ZIP Code 10583 · Scarsdale, New York6 districts · 14,706 homes
- ZIP Code 11563 · Lynbrook, New York6 districts · 8,791 homes · two bands, two answers
- ZIP Code 11590 · Westbury, New York6 districts · 14,956 homes
- ZIP Code 11743 · Lloyd Harbor, New York6 districts · 16,080 homes
- ZIP Code 12180 · Troy, New York6 districts · 25,597 homes
- ZIP Code 12828 · Fort Edward, New York6 districts · 4,128 homes
- ZIP Code 13340 · Frankfort, New York6 districts · 3,498 homes
What to do next
Ask the district office to confirm your street address. A district settles that question on its own site: look for a school locator, a find my school tool, or an attendance zone map. Where there is none, ask the office itself.
A ZIP Code is a set of mail delivery routes, not a boundary: 1,018 of the 1,807 ZIP Code areas in New York with a district named for them are served by more than one school district, and the line between two of them runs along streets. Only the district can say which side of that line an address is on.
This site links to no district website. None of the federal files it is built from publishes one, and a guessed address is worse than none. It is the district office, not a search engine, that settles an address.
If a house purchase depends on the answer, ask the district itself for written confirmation of that exact address. A listing is not a district record, and neither is this page.
What this cannot tell you
The homes were counted in the 2020 Census and the district lines are the 2026 boundary file. Nothing on this page adjusts one to the other. Where houses have been built or cleared since the count, a share here describes the place as it was counted rather than as it stands today, and in the fastest-growing ZIP Code areas that gap is the largest single source of error on this site.
A share on this page is a share of the homes in the ZIP Code area, not a probability for any particular address. Enrollment is decided by street address, and a district may run magnet, charter or choice programs that ignore the boundary entirely. If a decision depends on the answer, the district office is the only authority; this page shows what the federal boundary files say and when they were published.
A district boundary is not a school attendance zone. This site never says which school an address is assigned to: no current national dataset of attendance zones exists, and the district draws them itself. Nor is anything here endorsed or certified by the Census Bureau; we use their published files, and that is the whole of the relationship.
A ZIP Code is a set of mail delivery routes, not an area. What is mapped here is the Census Bureau's ZIP Code Tabulation Area, the closest published approximation to it. The two are not identical, and a handful of ZIP Codes used only for post office boxes or single buildings have no tabulation area at all.
Where these numbers come from
School district boundaries come from the Census Bureau's Census Geographic Relationship File, current 2026 vintage, which assigns every census block to a unified district or to an elementary and a secondary district. Homes and residents in each block come from the 2020 Census Redistricting Data (PL 94-171), H1_001 and P1_001. The ZIP Code areas come from the same Geographic Relationship File, block to ZIP Code Tabulation Area. District names and grade ranges come from the Census Gazetteer 2025, with 2020 for districts no longer listed.
The place name printed beside a ZIP Code comes from the Census 2020 ZIP Code Tabulation Area relationship files: place, county subdivision and county, taken 2026-09-06. It is a label rather than a measurement: the Census Bureau does not publish which post office a ZIP Code belongs to, so the place named is the one covering the most land inside the area, not the city the Postal Service prints on an envelope.
Everything else on this page — the shares, the counts of districts per ZIP, the comparison between the two grade bands, the rankings — is computed here from those files. The source publishes none of it. Snapshot taken 2026-09-03.