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Three Rivers School District

Oregon · runs kindergarten through grade 12

Three Rivers is the only school district serving 7 of the 11 ZIP Code areas it touches, and shares the other 4 with neighbors. It covers 22,773 homes and 49,975 residents. By homes covered it ranks 19th of the 197 districts in Oregon. The district it shares ZIP Codes with most often is Rogue River School District 35, in 3 of them.

Where this district is the answer, and where it is not

Three Rivers covers 1,708 square miles, and the ZIP Code areas inside it are small by comparison. Its 22,773 homes are spread thinly enough that the postal map and the school map have little reason to agree anywhere.

  • Homes inside the boundary22,773
  • Residents49,975
  • ZIP Code areas it reaches11
  • Where it is the only district7
  • Where it shares with another district4
  • Where it holds under half a percent0
  • Land area1,708 square miles
  • Homes per square mile13

The ZIP Code areas it reaches

It is the only district serving 7 of them and shares the other 4. It holds 100% of the homes in 97523 and 11% of the homes in 97530; each entry below says how much of that area's homes it holds, and the rest belong to somebody else.

  • ZIP Code 97523 · Takilma, Oregon100% of the homes
  • ZIP Code 97532 · Merlin, Oregon100% of the homes
  • ZIP Code 97544 · Williams, Oregon100% of the homes
  • ZIP Code 97538 · Selma, Oregon100% of the homes
  • ZIP Code 97543 · Josephine County, Oregon100% of the homes
  • ZIP Code 97534 · O'Brien, Oregon100% of the homes
  • ZIP Code 97531 · Kerby, Oregon100% of the homes
  • ZIP Code 97497 · Josephine County, Oregon99% of the homes
  • ZIP Code 97527 · Grants Pass, Oregon49% of the homes
  • ZIP Code 97526 · Grants Pass, Oregon41% of the homes
  • ZIP Code 97530 · Ruch, Oregon11% of the homes

The areas it leads without holding most of the homes

Three Rivers is the largest district in 9 ZIP Code areas. Answer with its name alone and the answer misses 7,926 of the 23,697 homes those areas hold — though in 7 of them it holds every home there is. The count is homes, not addresses, and it is the number no lookup prints.

Three Rivers is the largest name in ZIP Code 97527 · Grants Pass, Oregon and still holds a minority of it: 7,727 of 15,643 homes. The other 7,916 homes are with Grants Pass School District 7 and Rogue River School District 35. This is the shape that makes a one-name answer worst — the name is right for fewer homes than it is wrong for.

ZIP Code 97497 · Josephine County, Oregon is a two-district area: 701 of its 711 homes are inside Three Rivers, and the other 10 homes are with Rogue River School District 35. Which one an address belongs to is settled by the street, not by the five digits.

In ZIP Code 97523 · Takilma, Oregon the single-name answer is the true one: Three Rivers holds all 3,164 homes counted there, and no other district holds a share worth naming.

ZIP Code 97531 · Kerby, Oregon is another area where one name covers everything — 275 homes, all of them inside Three Rivers.

Three Rivers reaches into ZIP Code 97526 · Grants Pass, Oregon with 6,585 of its 15,923 homes; 3 districts there hold a real share of it, and Grants Pass School District 7 leads them. The familiar answer for that area is one of the others, and it is wrong for those 6,585 homes.

Three Rivers reaches into ZIP Code 97530 · Ruch, Oregon with 417 of its 3,719 homes, behind Medford School District 549. The familiar answer for that area is the other name, and it is wrong for those 417 homes.

Who takes the other homes in its ZIP Codes

Three Rivers runs kindergarten through grade 12 itself, so an address it holds sees no change of authority between grade school and high school. The districts listed below are the ones that take the other homes in the ZIP Code areas it shares — Grants Pass School District 7, Medford School District 549 and Rogue River School District 35. They are neighbors on the same postal ground, not the next stop for its own students.

Who it shares ZIP Codes with

These districts appear alongside Three Rivers in the same ZIP Code areas: Rogue River School District 35, Grants Pass School District 7 and Medford School District 549. A single-name lookup for one of those areas has to choose between them, and the choice is right for some addresses and wrong for others.

Where this district sits

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 4 of the 11 ZIP Code areas Three Rivers 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.