ZIP Code 90638 · La Mirada, California
Los Angeles County · 15,589 counted · 5 districts
Each percentage here is a share of the 15,589 homes counted in ZIP Code 90638, 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 90638, La Mirada, California are not the districts named for high school, and the set changes in both directions: 2 districts arrive for high school only, 2 run the early grades and stop, and 1 serves both bands. 5 districts hold the 15,589 homes counted here between them, and Norwalk-La Mirada Unified is the largest by homes. The largest share is high enough that one name is right for most of the homes counted and wrong for the other 1,326: 1,324 homes with East Whittier City Elementary and Buena Park Elementary; 2 homes in districts too small to name here.
Three districts share the early grades
3 districts hold a measurable share of ZIP Code 90638 at this level. Norwalk-La Mirada Unified is the largest with 14,263 homes; the smallest of them holds 144 homes. East Whittier City Elementary and Buena Park Elementary are named here for grade school and not for high school.
Every track below is 35 cells long and stands for all 15,589 homes counted in ZIP Code 90638, so one cell is 445 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.
- Norwalk-La Mirada Unified School District14,263 of 15,589 homes91%
- East Whittier City Elementary School District1,180 of 15,589 homes7.6%
- Buena Park Elementary School District144 of 15,589 homes0.9%
Below half a percent at the grade school level: ABC Unified School District and South Whittier Elementary School District hold 2 homes between them, which is why they are counted under the list rather than inside it. A lookup that named them alongside the districts above would be listing a boundary crossing rather than an answer.
Three districts share high school
3 districts hold a measurable share of ZIP Code 90638 at this level. Norwalk-La Mirada Unified is the largest with 14,263 homes; the smallest of them holds 144 homes. Whittier Union High and Fullerton Joint Union High are named here for high school and not for the early grades.
- Norwalk-La Mirada Unified School District14,263 of 15,589 homes91%
- Whittier Union High School District1,181 of 15,589 homes7.6%
- Fullerton Joint Union High School District144 of 15,589 homes0.9%
Below half a percent at the high school level: ABC Unified School District holds 1 home, which is why it is counted under the list rather than inside it. A lookup that named it alongside the districts above would be listing a boundary crossing rather than an answer.
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:
- Norwalk-La Mirada Unified School District NCES ID 0627690 nlmusd.org (562) 210-2000
- Whittier Union High School District NCES ID 0642480 wuhsd.k12.ca.us (562) 698-8121
- East Whittier City Elementary School District NCES ID 0611850 ewcsd.org (562) 907-5900
- Buena Park Elementary School District NCES ID 0606360 bpsd.us (714) 522-8412
- Fullerton Joint Union High School District NCES ID 0614760 fjuhsd.org (714) 870-2800
The set of names changes in both directions
Whittier Union High and Fullerton Joint Union High are named for high school here and for no elementary grades, and East Whittier City Elementary and Buena Park 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 90638
A lookup that answers ZIP Code 90638 with one district name has to pick one of the names below and drop the rest. Measured against the 15,589 homes counted here, for the early grades it is wrong for 1,326 homes and for high school it is wrong for 1,326 homes. 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 90638
The districts named above are not alike in size or in reach. Whittier Union High touches 15 ZIP Code areas in all and holds 1,181 homes inside this one; Norwalk-La Mirada Unified touches 6 areas. Norwalk-La Mirada Unified is the only district in at least one ZIP Code area somewhere in the country, while Whittier Union High is never the only one anywhere: every postal area it touches, it shares.
- Norwalk-La Mirada Unified School District14,263 of 15,589 here · 6 ZIP areas in all
- Whittier Union High School District1,181 of 15,589 here · 15 ZIP areas in all
- East Whittier City Elementary School District1,180 of 15,589 here · 8 ZIP areas in all
- Buena Park Elementary School District144 of 15,589 here · 6 ZIP areas in all
- Fullerton Joint Union High School District144 of 15,589 here · 14 ZIP areas in all
Where Norwalk-La Mirada Unified goes from here
Norwalk-La Mirada Unified School District runs kindergarten through grade 12, and it is the only school district serving 1 of the 6 ZIP Code areas it touches, shares 3 more with neighbors, and holds under half a percent of the homes in the remaining 2. Inside its own boundary it holds 35,854 homes over 16 square miles; the part of it counted in ZIP Code 90638 is 14,263 of those. The district it shares the most postal ground with is Whittier Union High School District, across 3 ZIP Code areas. Its thinnest measured foothold is elsewhere: in ZIP Code area 90604 it holds 415 of 12,563 homes, or 3.3% of them.
How 90638 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, 70 areas in California name more than this ZIP Code does and 1,638 name fewer. Nationally more than one district is named in 53% of 33,555 areas.
Look up 90638 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 90638 recomputes the same 15,589 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: 1,326 of the 15,589 homes counted in 90638 sit outside the district holding the most of them, and the line between the two runs along streets rather than around the postal area.
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.