Baldwin-Whitehall School District

It never has a ZIP Code to itself

At 1,622 homes to the square mile this is city territory, and district lines in a city follow streets. Baldwin-Whitehall covers 11 square miles in all — small enough that a single ZIP Code area can hold most of it, and several ZIP Codes can cut across it.

• Homes inside the boundary17,311
• Residents38,574
• ZIP Code areas it reaches7
• Where it is the only district0
• Where it shares with another district5
• Where it holds under half a percent2
• Land area11 square miles
• Homes per square mile1,622

The ZIP Code areas it reaches

Every one of the 5 areas where it holds a real share it shares with somebody. Its largest foothold is 15236 at 63% of the homes; the thinnest is 15207, where it holds 1 home, under half a percent.

• ZIP Code 15236 · Baldwin, Pennsylvania63% of the homes
• ZIP Code 15227 · Baldwin, Pennsylvania54% of the homes
• ZIP Code 15234 · Castle Shannon, Pennsylvania10% of the homes
• ZIP Code 15226 · Pittsburgh, Pennsylvania4.0% of the homes
• ZIP Code 15228 · Bethel Park, Pennsylvania0.7% of the homes
• ZIP Code 15210 · Pittsburgh, Pennsylvania57 homes, under half a percent
• ZIP Code 15207 · Pittsburgh, Pennsylvania1 home, under half a percent

What one name misses in the areas it leads

Baldwin-Whitehall is the largest district in 2 ZIP Code areas, and not one of them is wholly its own. Answer with its name alone and the answer misses 11,654 of the 27,887 homes those areas hold. That count is computed here from census blocks; the lookups that answer this question with a single name never print it.

Baldwin-Whitehall holds 7,309 of the 13,646 homes in ZIP Code 15227 · Baldwin, Pennsylvania, so its name is right for most of the area and wrong for the rest: 6,337 homes with Brentwood Borough and Pittsburgh.

Baldwin-Whitehall is one of 7 districts the file names for ZIP Code 15236 · Baldwin, Pennsylvania at that level. It holds 8,924 of the 14,241 homes there; the rest is 5,277 homes with West Jefferson Hills, South Park, Bethel Park and 1 more district and 40 homes in districts too small to name here. One name for that area is not a simplification, it is a different answer for 5,317 of the homes in it.

ZIP Code 15234 · Castle Shannon, Pennsylvania repeats the pattern with 5 names holding a real share: 688 of its 6,862 homes are Baldwin-Whitehall's, and the other 6,174 are not.

Baldwin-Whitehall is not the name anyone would give for ZIP Code 15226 · Pittsburgh, Pennsylvania — Pittsburgh leads it — and Baldwin-Whitehall holds 275 homes there all the same. Answer that area with one name and that is what it is wrong about.

ZIP Code 15228 · Bethel Park, Pennsylvania is another area where Baldwin-Whitehall is present without being the answer: 57 of its 7,832 homes, behind Mount Lebanon.

Who takes the other homes in its ZIP Codes

Baldwin-Whitehall 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 — Pittsburgh, Mount Lebanon and Brentwood Borough. They are neighbors on the same postal ground, not the next stop for its own students.

• Pittsburgh School District26,405 homes in 5 shared ZIP Code areas
• Mount Lebanon School District8,802 homes in 3 shared ZIP Code areas
• Brentwood Borough School District4,832 homes in 1 shared ZIP Code area
• Keystone Oaks School District4,040 homes in 1 shared ZIP Code area
• West Jefferson Hills School District3,446 homes in 1 shared ZIP Code area
• South Park School District1,183 homes in 1 shared ZIP Code area

Who it shares ZIP Codes with

Baldwin-Whitehall shares ZIP Code areas with 9 different districts. The most frequent are Bethel Park, Mount Lebanon, Pittsburgh and Brentwood Borough. In a neighborhood this crowded the question is not which district serves the ZIP Code but which side of which street an address is on.

• Bethel Park School District3 shared ZIP areas
• Mount Lebanon School District3 shared ZIP areas
• Pittsburgh School District3 shared ZIP areas
• Brentwood Borough School District1 shared ZIP area
• Keystone Oaks School District1 shared ZIP area
• South Park School District1 shared ZIP area

Where this district sits

• School districts in Pennsylvania868 of 1,826 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 5 of the 7 ZIP Code areas Baldwin-Whitehall 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.