ZIP Code 90631 · La Habra, California
Orange County · 23,058 counted · 5 districts
Each percentage here is a share of the 23,058 homes counted in ZIP Code 90631, 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 90631, La Habra, California are not the districts named for high school, and the set changes in both directions: 2 districts arrive for high school that no elementary answer names, and 3 run the early grades and stop. 5 districts hold the 23,058 homes counted here between them, and Fullerton Joint Union High 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 191: 187 homes with Whittier Union High and 4 homes in districts too small to name here.
Three districts share the early grades
3 districts hold a measurable share of ZIP Code 90631 at this level. La Habra City Elementary is the largest with 15,434 homes; the smallest of them holds 187 homes. La Habra City Elementary, Lowell Joint Elementary and East Whittier City Elementary are named here for grade school and not for high school.
Every track below is 35 cells long and stands for all 23,058 homes counted in ZIP Code 90631, so one cell is 659 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.
- La Habra City Elementary School District15,434 of 23,058 homes67%
- Lowell Joint Elementary School District7,433 of 23,058 homes32%
- East Whittier City Elementary School District187 of 23,058 homes0.8%
Below half a percent at the grade school level: Rowland Unified School District holds 4 homes, 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.
Hacienda La Puente Unified School District reaches into ZIP Code 90631 at the grade school level as well and holds no home counted in it: the boundary crosses the postal area without picking up a single one.
High school is split between two districts
2 districts hold a measurable share of ZIP Code 90631 at this level. Fullerton Joint Union High is the largest with 22,867 homes; the smallest of them holds 187 homes. Fullerton Joint Union High and Whittier Union High are named here for high school and not for the early grades.
- Fullerton Joint Union High School District22,867 of 23,058 homes99%
- Whittier Union High School District187 of 23,058 homes0.8%
Below half a percent at the high school level: Rowland Unified School District holds 4 homes, 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.
Hacienda La Puente Unified School District reaches into ZIP Code 90631 at the high school level as well 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:
- Fullerton Joint Union High School District NCES ID 0614760 fjuhsd.org (714) 870-2800
- La Habra City Elementary School District NCES ID 0620190 lahabraschools.org (562) 690-2305
- Lowell Joint Elementary School District NCES ID 0623010 ljsd.org (562) 943-0211
- East Whittier City Elementary School District NCES ID 0611850 ewcsd.org (562) 907-5900
- Whittier Union High School District NCES ID 0642480 wuhsd.k12.ca.us (562) 698-8121
The set of names changes in both directions
Fullerton Joint Union High and Whittier Union High are named for high school here and for no elementary grades, and La Habra City Elementary, Lowell Joint Elementary and East Whittier City 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 90631
A lookup that answers ZIP Code 90631 with one district name has to pick one of the names below and drop the rest. Measured against the 23,058 homes counted here, for the early grades it is wrong for 7,624 homes and for high school it is wrong for 191 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 90631
The districts named above are not alike in size or in reach. Whittier Union High touches 15 ZIP Code areas in all and holds 187 homes inside this one; Lowell Joint Elementary touches 3 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.
- Fullerton Joint Union High School District22,867 of 23,058 here · 14 ZIP areas in all
- La Habra City Elementary School District15,434 of 23,058 here · 4 ZIP areas in all
- Lowell Joint Elementary School District7,433 of 23,058 here · 3 ZIP areas in all
- East Whittier City Elementary School District187 of 23,058 here · 8 ZIP areas in all
- Whittier Union High School District187 of 23,058 here · 15 ZIP areas in all
Where La Habra City Elementary goes from here
La Habra City Elementary School District runs kindergarten through grade 8, and it shares 3 of the 4 ZIP Code areas it touches with neighbors, holds under half a percent of the homes in the remaining 1, and is the only district in none of them. Inside its own boundary it holds 16,992 homes over 7 square miles; the part of it counted in ZIP Code 90631 is 15,434 of those. The district it shares the most postal ground with is Fullerton Joint Union High School District, across 3 ZIP Code areas. Its thinnest measured foothold is elsewhere: in ZIP Code area 92835 it holds 73 of 9,410 homes, or 0.8% of them.
How 90631 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 90631 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 90631 recomputes the same 23,058 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: 191 of the 23,058 homes counted in 90631 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.