DistrictByZip Every school district that touches your ZIP Code

ZIP Code 94513 · Brentwood, California

Contra Costa County · 22,299 counted · 4 districts

Grade schoolBrentwood Union Elementary School District97%21,578 of 22,299 homes
High schoolLiberty Union High School District100%22,299 of 22,299 homes

Each percentage here is a share of the 22,299 homes counted in ZIP Code 94513, 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.

The districts named for the early grades in ZIP Code 94513, Brentwood, California are not the districts named for high school, and the set changes in both directions: 1 district arrives for high school that no elementary answer names, and 3 run the early grades and stop. 4 districts hold the 22,299 homes counted here between them, and Liberty Union High is the largest by homes. Districts holding under half a percent of the homes named at their own level are listed separately below and are not counted in that number. The area sits in Contra Costa County, California.

Three districts share the early grades

3 districts hold a measurable share of ZIP Code 94513 at this level. Brentwood Union Elementary is the largest with 21,578 homes; the smallest of them holds 172 homes. Brentwood Union Elementary, Knightsen Elementary and Byron Union Elementary are named here for grade school and not for high school.

Every track below is 35 cells long and stands for all 22,299 homes counted in ZIP Code 94513, so one cell is 637 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.

  • Brentwood Union Elementary School District21,578 of 22,299 homes97%
  • Knightsen Elementary School District549 of 22,299 homes2.5%
  • Byron Union Elementary School District172 of 22,299 homes0.8%

Antioch Unified School District and Oakley Union Elementary School District reach into ZIP Code 94513 at the grade school level and hold no home counted in it: the boundary crosses the postal area without picking up a single one.

One district covers high school, and a sliver does not

Liberty Union High School District is the only high school district holding a measurable share of ZIP Code 94513, with 22,299 of the 22,299 homes counted in the area; 1 district more is named below the half-percent line. Liberty Union High is named here for high school and not for the early grades.

  • Liberty Union High School District22,299 of 22,299 homes100%

Antioch Unified School District reaches into ZIP Code 94513 at the high school level and holds no home counted in it: the boundary crosses the postal area without picking up a single one.

Have a street address?

A ZIP Code names every district that can serve the area; a street address settles which one serves a home. The Census Bureau geocoder takes an exact address and returns its school districts from the current boundary files, free and with no account.

Check an exact address with the Census Geocoder

Then confirm it with the district office. Each district named here, with its NCES district ID, website and phone:

The set of names changes in both directions

Liberty Union High is named for high school here and for no elementary grades, and Brentwood Union Elementary, Knightsen Elementary and Byron Union Elementary run the early grades and no more. An address on the wrong street can therefore change district at the change of grade and land in a district that was never part of its elementary answer, while a neighbor two blocks away keeps one name the whole way through.

What one district name costs in 94513

A lookup that answers ZIP Code 94513 with one district name has to pick one of the names below and drop the rest. Measured against the 22,299 homes counted here, for the early grades it is wrong for 721 homes and for high school one name is right for every home counted. That is the whole difference between this page and a one-line answer: the same federal file, read to the end instead of to the first row.

The districts that reach into 94513

The districts named above are not alike in size or in reach. Liberty Union High touches 10 ZIP Code areas in all and holds 22,299 homes inside this one; Byron Union Elementary touches 4 areas. Not one of them is ever the only district in a ZIP Code area anywhere in the country: every postal area they touch, they share with somebody.

  • Liberty Union High School District22,299 of 22,299 here · 10 ZIP areas in all
  • Brentwood Union Elementary School District21,578 of 22,299 here · 5 ZIP areas in all
  • Knightsen Elementary School District549 of 22,299 here · 5 ZIP areas in all
  • Byron Union Elementary School District172 of 22,299 here · 4 ZIP areas in all

Where Brentwood Union Elementary goes from here

Brentwood Union Elementary School District runs kindergarten through grade 8, and it shares 3 of the 5 ZIP Code areas it touches with neighbors, holds under half a percent of the homes in the remaining 2, and is the only district in none of them. Inside its own boundary it holds 22,471 homes over 57 square miles; the part of it counted in ZIP Code 94513 is 21,578 of those. The district it shares the most postal ground with is Liberty Union High School District, across 3 ZIP Code areas. Its thinnest measured foothold is elsewhere: in ZIP Code area 94517 it holds 202 of 4,758 homes, or 4.2% of them.

How 94513 compares in California

Across California the boundary file names more than one district in 996 of the 1,788 ZIP Code areas it names a district for, 56% of them, and 3 areas in the state have no high school district named for part of their homes. Counting the districts named at either level, 150 areas in California name more than this ZIP Code does and 1,489 name fewer. Nationally more than one district is named in 53% of 33,555 areas.

Look up 94513 again, or look up another ZIP Code

The lookup holds every ZIP Code area in the country with homes in it, including the ones with no page of their own. Opening it at 94513 recomputes the same 22,299 homes from the same snapshot, and typing five other digits answers for somewhere else. No server is asked for the answer: the whole index travels with the lookup page itself.

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: one district covers every home counted in 94513, and even then the street is what enrolls a child, because magnet, charter and choice programs ignore the boundary entirely.

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.

What this site can hand you instead:

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.