Huntington Beach Union High School District

It never has a ZIP Code to itself

At 2,719 homes to the square mile this is city territory, and district lines in a city follow streets. Huntington Beach Union High covers 45 square miles in all — small enough that a single ZIP Code area can hold most of it, and several ZIP Codes can cut across it.

• Homes inside the boundary122,157
• Residents322,830
• ZIP Code areas it reaches12
• Where it is the only district0
• Where it shares with another district9
• Where it holds under half a percent3
• Land area45 square miles
• Homes per square mile2,719

The ZIP Code areas it reaches

The spread is the thing to notice. In 92647 this district holds 100% of the homes; in 92626 it holds no homes at all. Same district, opposite answers, and a lookup that names it without the share tells the second household the same thing as the first.

• ZIP Code 92647 · Huntington Beach, California100% of the homes
• ZIP Code 92646 · Huntington Beach, California100% of the homes
• ZIP Code 92648 · Huntington Beach, California100% of the homes
• ZIP Code 92655 · Midway City, California100% of the homes
• ZIP Code 90742 · Huntington Beach, California100% of the homes
• ZIP Code 92649 · Huntington Beach, California99% of the homes
• ZIP Code 92683 · Westminster, California74% of the homes
• ZIP Code 92708 · Fountain Valley, California69% of the homes
• ZIP Code 92844 · Garden Grove, California41% of the homes
• ZIP Code 92841 · Garden Grove, California17 homes, under half a percent
• ZIP Code 90740 · Seal Beach, Californiano homes at all
• ZIP Code 92626 · Costa Mesa, Californiano homes at all

What one name misses, and what changes later

Huntington Beach Union High is the largest district in 7 ZIP Code areas. Answer with its name alone and the answer misses 13,429 of the 132,318 homes those areas hold — though in 4 of them it holds every home there is. The count is homes, not addresses, and it is the number no lookup prints.

Huntington Beach Union High holds 20,582 of the 27,916 homes in ZIP Code 92683 · Westminster, California, so its name is right for most of the area and wrong for the rest: 7,334 homes with Garden Grove Unified.

In ZIP Code 92708 · Fountain Valley, California the split runs 13,595 to 5,994 and the larger part is Huntington Beach Union High's: the rest is 5,994 homes with Garden Grove Unified.

ZIP Code 92649 · Huntington Beach, California is a two-district area: 15,284 of its 15,385 homes are inside Huntington Beach Union High, and the other 101 homes are with Los Alamitos Unified. Which one an address belongs to is settled by the street, not by the five digits.

In ZIP Code 92646 · Huntington Beach, California the single-name answer is the true one: Huntington Beach Union High holds all 22,344 homes counted there, and no other district holds a share worth naming.

ZIP Code 92647 · Huntington Beach, California is another area where one name covers everything — 22,746 homes, all of them inside Huntington Beach Union High.

Huntington Beach Union High reaches into ZIP Code 92844 · Garden Grove, California with 2,740 of its 6,753 homes; 3 districts there hold a real share of it, and Garden Grove Unified leads them. The familiar answer for that area is one of the others, and it is wrong for those 2,740 homes.

ZIP Code 90742 · Huntington Beach, California is close to being two districts in equal parts: Huntington Beach Union High holds 511 of its 511 homes and Huntington Beach City Elementary leads the rest. A lookup that picks the larger name is making a coin-toss look like a fact.

The elementary districts that feed it

Students arrive at Huntington Beach Union High from 6 districts that run the lower grades on the same ground — Ocean View Elementary, which sends 31%, Huntington Beach City Elementary, which sends 31% and Westminster, which sends 16%. Each of those addresses therefore belongs to two districts at once, one for grade school and this one for high school, and neither name is the whole answer.

• Ocean View Elementary School District31% of Huntington Beach Union High's homes come from here
• Huntington Beach City Elementary School District31% of Huntington Beach Union High's homes come from here
• Westminster School District16% of Huntington Beach Union High's homes come from here
• Fountain Valley Elementary School District13% of Huntington Beach Union High's homes come from here
• Garden Grove Unified School District9.2% of Huntington Beach Union High's homes come from here
• Los Alamitos Unified School District0.1% of Huntington Beach Union High's homes come from here

The names in this list are exact: the federal file gives the district of each band for every census block. The percentages are not. They spread each shared ZIP Code area's homes across the other band in proportion to the share each district holds there, because the file names the two districts of a block and not how a household moves between them. Read them as the size of the crossing, not as a count of houses.

Who it shares ZIP Codes with

Huntington Beach Union High shares ZIP Code areas with 6 different districts. The most frequent are Ocean View Elementary, Huntington Beach City Elementary, Westminster and Garden Grove Unified. In a neighborhood this crowded the question is not which district serves the ZIP Code but which side of which street an address is on.

• Ocean View Elementary School District7 shared ZIP areas
• Huntington Beach City Elementary School District4 shared ZIP areas
• Westminster School District4 shared ZIP areas
• Garden Grove Unified School District3 shared ZIP areas
• Fountain Valley Elementary School District2 shared ZIP areas
• Los Alamitos Unified School District1 shared ZIP area

Where this district sits

• School districts in California996 of 1,788 ZIP areas split
• Every district with a page here260 districts listed

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: in 9 of the 12 ZIP Code areas Huntington Beach Union High reaches, at least one other district holds a real share of the homes as well, and the line between 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.