About DistrictByZip
This site answers one question, and it answers it in the plural: which school districts serve a ZIP Code. Of the 33,555 ZIP Code areas in the country with homes in them, 17,865 are served by more than one district, and on 2,711 of them the district that runs grade school is not the district that runs high school. Every other lookup we could find answers with a single name.
Who publishes it
BiLingoPlus LLC, a small independent software studio. There is no invented expert behind these pages and no byline: the writing is generated from the same computation as the numbers, and the studio stands behind both. The site is not affiliated with the Census Bureau, the Department of Education or any school district, and nothing here is endorsed or certified by any of them.
Corrections go to hello@districtbyzip.com, a mailbox on this domain read by a person. If a figure does not match the federal files, tell us which page and which row; the parsing is mechanical, so a mismatch is our bug and we want it.
Where the numbers come from
5 public Census Bureau files, named and linked on the method page with the day each was downloaded. The Bureau publishes which school district each census block belongs to and how many homes the block holds; it does not publish what happens when those blocks are grouped by ZIP Code area. That grouping is the whole of what this site adds, and it is why the homes were counted in 2020 while the district lines are the 2026 file.
Why there are no school ratings here
There are none, there will be none, and the reason is not modesty. A rating of school quality tracks the income and composition of the households already living inside a boundary far more closely than it tracks anything a school does, so printing one beside a boundary turns a reference into a sorting tool and hands a real estate agent something the Fair Housing Act forbids them to say. A page that reports where the lines run and refuses to grade what is inside them is one an agent can link to safely, and that is a deliberate design, not an omission. It follows from the same rule: no school ratings, no test scores, no rankings and no user reviews anywhere on this site.
The second refusal is narrower: this site never says which school an address is assigned to. District boundaries and school attendance zones are different maps, and no current national dataset of the second exists at all.
How to reuse it
The computed figures may be republished with a link back, and the whole dataset is downloadable rather than locked behind an interface.
What to do next
Ask the district office to confirm your street address: look on its site for a school locator, a find my school tool or an attendance zone map, or call the office.
A ZIP Code is a set of mail delivery routes, not a boundary: 17,865 of the 33,555 ZIP Code areas in the country with homes in 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.
District websites and phone numbers here come from the NCES Common Core of Data directory, 2024-25 school year, filed under the same district ID as the Census boundary files. Where it lists no usable website, none is printed rather than guessed.
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.
Where these numbers come from
The homes were counted in the 2020 Census and the district lines are the 2026 boundary file, so a fast-growing area may have changed since; ZIP Codes here are the Census Bureau's ZIP Code Tabulation Areas; a share is a share of homes, not the chance that one address is in a district; and a district is not a school attendance zone. Every source, file and caveat is on the method page.