Glenbard Township High School District 87

It never has a ZIP Code to itself

At 1,453 homes to the square mile this is city territory, and district lines in a city follow streets. Glenbard Township High School District 87 covers 44 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 boundary64,318
• Residents165,483
• ZIP Code areas it reaches11
• Where it is the only district0
• Where it shares with another district10
• Where it holds under half a percent1
• Land area44 square miles
• Homes per square mile1,453

The ZIP Code areas it reaches

The spread is the thing to notice. In 60137 this district holds 100% of the homes; in 60172 it holds 2 homes, under half a percent. 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 60137 · Glen Ellyn, Illinois100% of the homes
• ZIP Code 60139 · Glendale Heights, Illinois100% of the homes
• ZIP Code 60148 · Lombard, Illinois76% of the homes
• ZIP Code 60188 · Carol Stream, Illinois60% of the homes
• ZIP Code 60108 · Bloomingdale, Illinois51% of the homes
• ZIP Code 60189 · Wheaton, Illinois20% of the homes
• ZIP Code 60133 · Hanover Park, Illinois14% of the homes
• ZIP Code 60101 · Addison, Illinois10% of the homes
• ZIP Code 60187 · Wheaton, Illinois3.5% of the homes
• ZIP Code 60515 · Downers Grove, Illinois2.4% of the homes
• ZIP Code 60172 · Roselle, Illinois2 homes, under half a percent

What one name misses, and what changes later

Glenbard Township High School District 87 is the largest district in 5 ZIP Code areas. Answer with its name alone and the answer misses 16,367 of the 74,563 homes those areas hold — though in 2 of them it holds every home there is. The count is homes, not addresses, and it is the number no lookup prints.

Glenbard Township High School District 87 is one of 4 districts the file names for ZIP Code 60188 · Carol Stream, Illinois at that level. It holds 9,512 of the 15,904 homes there; the rest is 6,392 homes with Community Unit School District 200, School District U-46 and Community High School District 94. One name for that area is not a simplification, it is a different answer for 6,392 of the homes in it.

Glenbard Township High School District 87 holds 16,927 of the 22,203 homes in ZIP Code 60148 · Lombard, Illinois, so its name is right for most of the area and wrong for the rest: 5,256 homes with DuPage High School District 88 and 20 homes in a district too small to name here.

ZIP Code 60108 · Bloomingdale, Illinois is a two-district area: 4,839 of its 9,538 homes are inside Glenbard Township High School District 87, and the other 4,699 homes are with Lake Park Community High School District 108. Which one an address belongs to is settled by the street, not by the five digits.

In ZIP Code 60137 · Glen Ellyn, Illinois the single-name answer is the true one: Glenbard Township High School District 87 holds all 15,018 homes counted there, and no other district holds a share worth naming.

ZIP Code 60139 · Glendale Heights, Illinois is another area where one name covers everything — 11,900 homes, all of them inside Glenbard Township High School District 87.

ZIP Code 60189 · Wheaton, Illinois repeats the pattern with 5 names holding a real share: 2,488 of its 12,315 homes are Glenbard Township High School District 87's, and the other 9,827 are not.

Glenbard Township High School District 87 is not the name anyone would give for ZIP Code 60187 · Wheaton, Illinois — Community Unit School District 200 leads it — and Glenbard Township High School District 87 holds 381 homes there all the same. Answer that area with one name and that is what it is wrong about.

ZIP Code 60515 · Downers Grove, Illinois is another area where Glenbard Township High School District 87 is present without being the answer: 295 of its 12,546 homes, behind Community High School District 99.

The elementary districts that feed it

Students arrive at Glenbard Township High School District 87 from 6 districts that run the lower grades on the same ground — Lombard School District 44, which sends 18%, Glen Ellyn School District 41, which sends 16% and Glen Ellyn Community Consolidated School District 89, which sends 11%. Each of those addresses therefore belongs to two districts at once, one for grade school and this one for high school, and neither name is the whole answer.

• Lombard School District 4418% of Glenbard Township High School District 87's homes come from here
• Glen Ellyn School District 4116% of Glenbard Township High School District 87's homes come from here
• Glen Ellyn Community Consolidated School District 8911% of Glenbard Township High School District 87's homes come from here
• Marquardt School District 1511% of Glenbard Township High School District 87's homes come from here
• Community Consolidated School District 9310% of Glenbard Township High School District 87's homes come from here
• Queen Bee School District 168.8% of Glenbard Township High School District 87's homes come from here

The names in this list are exact: the federal file gives the district of each band for every census block. The percentages are not. They spread each shared ZIP Code area's homes across the other band in proportion to the share each district holds there, because the file names the two districts of a block and not how a household moves between them. Read them as the size of the crossing, not as a count of houses.

Who it shares ZIP Codes with

Glenbard Township High School District 87 shares ZIP Code areas with 25 different districts. The most frequent are Glen Ellyn School District 41, Marquardt School District 15, Community Consolidated School District 93 and Lombard School District 44. 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.

• Glen Ellyn School District 415 shared ZIP areas
• Marquardt School District 155 shared ZIP areas
• Community Consolidated School District 933 shared ZIP areas
• Lombard School District 443 shared ZIP areas
• Glen Ellyn Community Consolidated School District 893 shared ZIP areas
• Community Unit School District 2003 shared ZIP areas

Where this district sits

• School districts in Illinois1,034 of 1,394 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 10 of the 11 ZIP Code areas Glenbard Township High School District 87 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.