Yukon-Koyukuk School District

A few homes at the edge of someone else's ZIP Code

Fewer than three homes to the square mile: Yukon-Koyukuk covers 61,915 square miles of mostly open country. A district this thin holds a small share of any ZIP Code it touches, however much ground it covers, which is exactly why share by land area would mislead here and share by homes does not.

• Homes inside the boundary1,586
• Residents2,248
• ZIP Code areas it reaches14
• Where it is the only district12
• Where it shares with another district2
• Where it holds under half a percent0
• Land area61,915 square miles
• Homes per square mile0

The ZIP Code areas it reaches

The spread is the thing to notice. In 99756 this district holds 100% of the homes; in 99701 it holds 0.6% of the homes. 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 99756 · Manley Hot Springs, Alaska100% of the homes
• ZIP Code 99768 · Ruby, Alaska100% of the homes
• ZIP Code 99777 · Tanana, Alaska100% of the homes
• ZIP Code 99746 · Huslia, Alaska100% of the homes
• ZIP Code 99720 · Alatna, Alaska100% of the homes
• ZIP Code 99758 · Minto, Alaska100% of the homes
• ZIP Code 99765 · Nulato, Alaska100% of the homes
• ZIP Code 99748 · Kaltag, Alaska100% of the homes
• ZIP Code 99726 · Evansville, Alaska100% of the homes
• ZIP Code 99754 · Koyukuk, Alaska100% of the homes
• ZIP Code 99745 · Hughes, Alaska100% of the homes
• ZIP Code 99767 · Rampart, Alaska100% of the homes
• ZIP Code 99760 · Healy, Alaska43% of the homes
• ZIP Code 99701 · Wiseman, Alaska0.6% of the homes

The areas it leads without holding most of the homes

Yukon-Koyukuk is the largest district in 13 ZIP Code areas. Answer with its name alone and the answer misses 380 of the 1,909 homes those areas hold — though in 12 of them it holds every home there is. The count is homes, not addresses, and it is the number no lookup prints.

Yukon-Koyukuk is the largest name in ZIP Code 99760 · Healy, Alaska and still holds a minority of it: 288 of 668 homes. The other 380 homes are with Nenana City, Denali Borough and Fairbanks North Star Borough. This is the shape that makes a one-name answer worst — the name is right for fewer homes than it is wrong for.

In ZIP Code 99720 · Alatna, Alaska the single-name answer is the true one: Yukon-Koyukuk holds all 107 homes counted there, and no other district holds a share worth naming.

ZIP Code 99726 · Evansville, Alaska is another area where one name covers everything — 64 homes, all of them inside Yukon-Koyukuk.

Yukon-Koyukuk is not the name anyone would give for ZIP Code 99701 · Wiseman, Alaska — Fairbanks North Star Borough leads it — and Yukon-Koyukuk holds 57 homes there all the same. Answer that area with one name and that is what it is wrong about.

Who takes the other homes in its ZIP Codes

Yukon-Koyukuk runs pre-K 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 — Fairbanks North Star Borough, Nenana City and Denali Borough. They are neighbors on the same postal ground, not the next stop for its own students.

• Fairbanks North Star Borough School District8,947 homes in 2 shared ZIP Code areas
• Nenana City School District219 homes in 1 shared ZIP Code area
• Denali Borough School District116 homes in 1 shared ZIP Code area

Who it shares ZIP Codes with

These districts appear alongside Yukon-Koyukuk in the same ZIP Code areas: Fairbanks North Star Borough, Nenana City and Denali Borough. 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.

• Fairbanks North Star Borough School District2 shared ZIP areas
• Nenana City School District1 shared ZIP area
• Denali Borough School District1 shared ZIP area

Where this district sits

• School districts in Alaska20 of 243 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 2 of the 14 ZIP Code areas Yukon-Koyukuk 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.