School districts in Oregon
48% of the 425 populated ZIP Code areas in Oregon are served by more than one school district — 204 of them, which puts the state 28th among the fifty-two. It is organized into 187 unified districts, 9 elementary districts and 1 secondary district, the largest being Portland School District 1J at 253,369 homes. Its most divided ZIP Code area, 97004, is split between 5 districts for elementary grades alone. In 10 of them the answer for grade school is not the answer for high school. The two districts that share the most ZIP Codes here are Beaverton School District 48J and Hillsboro School District 1J, in 7 of them.
How often a ZIP Code here crosses a district line
The state is close to the national rate of 53%. Every count below comes from the census blocks in each ZIP Code area rather than from any published table; Portland School District 1J is the largest district in it, at 253,369 homes.
- ZIP Code areas with a district425
- Served by more than one district204 (48%)
- Grade school and high school differ10 (2.4%)
- No high school district named3
- Unified districts187
- Elementary districts9
- Secondary districts1
- Homes in no district at all0
The largest districts in Oregon
Ranked by the homes inside their boundaries: Portland School District 1J leads at 253,369, then Beaverton School District 48J and Salem-Keizer School District 24J. Only districts with a page here are linked; 191 more exist in the state without one.
- Medford School District 54939,044 homes · 7 ZIP areas
- Gresham-Barlow School District 1J31,625 homes · 5 ZIP areas
- Reynolds School District 729,436 homes · 5 ZIP areas
- David Douglas School District 4025,269 homes · 6 ZIP areas
- Three Rivers School District22,773 homes · 11 ZIP areas
- Parkrose School District 310,590 homes · 5 ZIP areas
The most divided ZIP Code area in Oregon
ZIP Code area 97004 holds 1,695 homes, and 5 districts each take a meaningful share of them for elementary grades — Molalla River School District 35 first at 40%, then Oregon City School District 62. A lookup that names the first is describing that share of the homes and silently not the 1,011 homes that remain.
Each percentage here is a share of the 1,695 homes counted in ZIP Code 97004, 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.
Every track below is 35 cells long and stands for all 1,695 homes counted in ZIP Code 97004, so one cell is 48 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.
- Molalla River School District 35684 of 1,695 homes40%
- Oregon City School District 62582 of 1,695 homes34%
- Colton School District 53253 of 1,695 homes15%
- Canby School District 86157 of 1,695 homes9.3%
- Estacada School District 10819 of 1,695 homes1.1%
For grade school, an answer of one district name would be wrong for 1,011 of the 1,695 here.
How much of Oregon a single district name misses
Across the 425 ZIP Code areas in Oregon with homes in them, an answer of one district name misses 163,470 of the 1,813,450 homes they hold — 9.0% of the state. In 178 of those areas the single name is the whole truth; in the other 247 it is not.
In ZIP Code 97402 · Eugene, Oregon the largest district for grade school is Bethel School District 52, and naming it alone misses 9,833 of the 23,226 homes counted there. The rest are with Eugene School District 4J and Crow-Applegate-Lorane Sd 66.
In ZIP Code 97223 · Tigard, Oregon the largest district for grade school is Tigard-Tualatin School District 23J, and naming it alone misses 9,670 of the 20,741 homes counted there. The rest are with Beaverton School District 48J.
ZIP Code 97233 · Portland, Oregon names 4 districts. Reynolds School District 7 is the largest of them for grade school, and an answer of its name alone misses 8,804 of the 14,903 homes there; Centennial School District 28J, David Douglas School District 40 and Parkrose School District 3 hold the rest.
Where a ZIP Code here names more than one district
Of the 425 ZIP Code areas in Oregon that the federal file names a district for, 204 name more than one school district. These are the 12 with the most, starting at 5 districts in one postal area: Beavercreek, Woodburn and Sheridan. Each row opens the full answer for that ZIP Code, with every district named for grade school and for high school and the share of the homes each one holds.
- ZIP Code 97004 · Beavercreek, Oregon5 districts · 1,695 homes
- ZIP Code 97071 · Woodburn, Oregon5 districts · 9,983 homes
- ZIP Code 97378 · Sheridan, Oregon5 districts · 2,815 homes
- ZIP Code 97405 · Eugene, Oregon5 districts · 20,495 homes
- ZIP Code 97448 · Junction City, Oregon5 districts · 5,578 homes
- ZIP Code 97462 · Fair Oaks, Oregon5 districts · 1,868 homes
- ZIP Code 97721 · Harney County, Oregon5 districts · 162 homes · two bands, two answers
- ZIP Code 97826 · Echo, Oregon5 districts · 477 homes
- ZIP Code 97910 · Jordan Valley, Oregon5 districts · 377 homes
- ZIP Code 97016 · Clatskanie, Oregon4 districts · 2,827 homes
- ZIP Code 97070 · Wilsonville, Oregon4 districts · 11,648 homes
- ZIP Code 97089 · Damascus, Oregon4 districts · 4,850 homes
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: 204 of the 425 ZIP Code areas in Oregon with a district named for 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.
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.