School districts in Pennsylvania
48% of the 1,826 populated ZIP Code areas in Pennsylvania are served by more than one school district — 868 of them, which puts the state 29th among the fifty-two. It is organized into 500 unified districts, the largest being Philadelphia City at 726,815 homes. Its most divided ZIP Code area, 15946, is split between 7 districts for elementary grades alone. The two districts that share the most ZIP Codes here are Cambria Heights and Penn Cambria, in 6 of them. Counted by homes rather than by ZIP Code area, 66% of the state's housing sits in a ZIP Code that more than one district serves.
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; Philadelphia City is the largest district in it, at 726,815 homes.
- ZIP Code areas with a district1,826
- Served by more than one district868 (48%)
- Grade school and high school differ0 (0%)
- No high school district named0
- Unified districts500
- Elementary districts0
- Secondary districts0
- Homes in no district at all0
The largest districts in Pennsylvania
Philadelphia City dominates the state: at 726,815 homes it holds more than three times what Pittsburgh does in second place. A district that size sets the answer for dozens of ZIP Code areas at once, and the areas it covers alone are counted on its own page rather than assumed from its size.
The most divided ZIP Code area in Pennsylvania
ZIP Code area 15946 holds 3,107 homes and 7 districts take a real share of them for the early grades, but Portage Area holds 86% on its own at that level. This is the shape that makes a single-name lookup look right: it names Portage Area and describes most of the homes here, and silently not the rest.
Each percentage here is a share of the 3,107 homes counted in ZIP Code 15946, 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 3,107 homes counted in ZIP Code 15946, so one cell is 89 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.
- Portage Area School District2,670 of 3,107 homes86%
- Forest Hills School District95 of 3,107 homes3.1%
- Claysburg-Kimmel School District81 of 3,107 homes2.6%
- Hollidaysburg Area School District80 of 3,107 homes2.6%
- Penn Cambria School District70 of 3,107 homes2.3%
- Central Cambria School District62 of 3,107 homes2.0%
- Chestnut Ridge School District49 of 3,107 homes1.6%
For grade school, an answer of one district name would be wrong for 437 of the 3,107 here.
How much of Pennsylvania a single district name misses
Across the 1,826 ZIP Code areas in Pennsylvania with homes in them, an answer of one district name misses 893,114 of the 5,742,828 homes they hold — 16% of the state. In 892 of those areas the single name is the whole truth; in the other 934 it is not.
ZIP Code 15601 · Greensburg, Pennsylvania names 4 districts. Hempfield Area is the largest of them for grade school, and an answer of its name alone misses 13,656 of the 26,585 homes there; Greensburg Salem, Greater Latrobe and Mount Pleasant Area hold the rest.
ZIP Code 17331 · Hanover, Pennsylvania names 5 districts. South Western is the largest of them for grade school, and an answer of its name alone misses 12,859 of the 23,322 homes there; Hanover Public, Conewago Valley and Spring Grove Area hold the rest.
ZIP Code 15301 · Washington, Pennsylvania names 6 districts. Trinity Area is the largest of them for grade school, and an answer of its name alone misses 11,737 of the 23,129 homes there; Washington, McGuffey and Chartiers-Houston hold the rest.
Where a ZIP Code here names more than one district
Of the 1,826 ZIP Code areas in Pennsylvania that the federal file names a district for, 868 name more than one school district. These are the 12 with the most, starting at 7 districts in one postal area: Spring Hill, Washington and Gibsonia. 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 15946 · Spring Hill, Pennsylvania7 districts · 3,107 homes
- ZIP Code 15301 · Washington, Pennsylvania6 districts · 23,129 homes
- ZIP Code 15044 · Gibsonia, Pennsylvania5 districts · 11,442 homes
- ZIP Code 15101 · Allison Park, Pennsylvania5 districts · 10,623 homes
- ZIP Code 15106 · Carnegie, Pennsylvania5 districts · 9,700 homes
- ZIP Code 15234 · Castle Shannon, Pennsylvania5 districts · 6,862 homes
- ZIP Code 15235 · Churchill, Pennsylvania5 districts · 16,951 homes
- ZIP Code 15236 · Baldwin, Pennsylvania5 districts · 14,241 homes
- ZIP Code 15332 · Jefferson Hills, Pennsylvania5 districts · 3,849 homes
- ZIP Code 15701 · Indiana, Pennsylvania5 districts · 14,762 homes
- ZIP Code 15748 · Jacksonville, Pennsylvania5 districts · 3,078 homes
- ZIP Code 15753 · Newburg, Pennsylvania5 districts · 246 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: 868 of the 1,826 ZIP Code areas in Pennsylvania 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.