School districts in New Hampshire
New Hampshire splits the two grade bands between separate districts over a large part of the state: 27% of its homes sit under an elementary district that stops before high school, with a separate secondary district taking over from there. That is why 62 of its 247 ZIP Code areas return a different set of districts for grade school than for high school. In 03785 (Mountain Lakes), the most divided of them, Haverhill Cooperative leads both answers, and the disagreement sits under it rather than at the top of the list. The two districts that share the most ZIP Codes here are Profile and Lafayette Regional, in 3 of them.
Two districts at one address
New Hampshire keeps 8 separate secondary districts — districts that pick students up partway through and run to the end of high school, over several elementary districts at once. Where one of those sits, an address has two district names and neither is wrong.
- ZIP Code areas with a district247
- Served by more than one district89 (36%)
- Grade school and high school differ62 (25%)
- No high school district named89
- Unified districts83
- Elementary districts88
- Secondary districts8
- Homes in no district at all15
The largest districts in New Hampshire
Ranked by the homes inside their boundaries: Manchester leads at 51,438, then Nashua and Winnacunnet Cooperative. Only districts with a page here are linked; 174 more exist in the state without one.
The most divided ZIP Code area in New Hampshire
ZIP Code area 03785 holds 1,249 homes and 6 districts take a real share of them for the early grades, but Haverhill Cooperative holds 84% on its own at that level. This is the shape that makes a single-name lookup look right: it names Haverhill Cooperative and describes most of the homes here, and silently not the rest.
33 of the 1,249 homes here have no high school district named in the federal file.
Each percentage here is a share of the 1,249 homes counted in ZIP Code 03785, 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 1,249 homes counted in ZIP Code 03785, so one cell is 36 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.
- Haverhill Cooperative School District1,052 of 1,249 homes84%
- Benton School District144 of 1,249 homes12%
- Lafayette Regional School District20 of 1,249 homes1.6%
- Landaff School District17 of 1,249 homes1.4%
- Bath School District16 of 1,249 homes1.3%
For grade school, an answer of one district name would be wrong for 197 of the 1,249 here.
Where the high school answer in New Hampshire is missing from the file
Across the 247 ZIP Code areas in New Hampshire with homes in them, an answer of one district name misses 19,774 of the 639,068 homes they hold. The arithmetic understates it here: in 89 of those areas some homes have no high school district named at all, so the name that is right for the early grades is not wrong later — there is nothing there to be right about.
ZIP Code 03833 · Exeter, New Hampshire names 4 districts. Exeter School District is the largest of them for grade school, and an answer of its name alone misses 2,309 of the 9,768 homes there; Exeter Regional Cooperative, Brentwood and Kensington hold the rest.
In ZIP Code 03303 · Concord, New Hampshire the largest district for grade school is Merrimack Valley, and naming it alone misses 2,204 of the 6,971 homes counted there. The rest are with Concord.
ZIP Code 03275 · Suncook, New Hampshire is the case New Hampshire is known for: 2,031 of its 5,014 homes have no high school district named in the federal file, and Pembroke leads what is named for grade school. An answer of one name misses 2,031 homes there and the arrangement behind them.
Where a ZIP Code here names more than one district
Of the 247 ZIP Code areas in New Hampshire that the federal file names a district for, 89 name more than one school district. These are the 12 with the most, starting at 6 districts in one postal area: Mountain Lakes, Dorchester and Colebrook. 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 03785 · Mountain Lakes, New Hampshire6 districts · 1,249 homes · 33 with no high school district
- ZIP Code 03266 · Dorchester, New Hampshire5 districts · 1,318 homes · two bands, two answers
- ZIP Code 03576 · Colebrook, New Hampshire4 districts · 2,319 homes · 600 with no high school district
- ZIP Code 03579 · Errol, New Hampshire4 districts · 920 homes · 469 with no high school district
- ZIP Code 03773 · Newport, New Hampshire4 districts · 3,783 homes · 759 with no high school district
- ZIP Code 03833 · Exeter, New Hampshire4 districts · 9,768 homes · two bands, two answers
- ZIP Code 03057 · Mont Vernon, New Hampshire3 districts · 991 homes · two bands, two answers
- ZIP Code 03223 · Campton, New Hampshire3 districts · 2,232 homes · two bands, two answers
- ZIP Code 03264 · Plymouth, New Hampshire3 districts · 2,505 homes · two bands, two answers
- ZIP Code 03431 · Keene, New Hampshire3 districts · 11,227 homes
- ZIP Code 03455 · Marlborough, New Hampshire3 districts · 1,010 homes · 993 with no high school district
- ZIP Code 03574 · Bethlehem, New Hampshire3 districts · 1,518 homes · two bands, two answers
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: 89 of the 247 ZIP Code areas in New Hampshire 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.