Greenfield School District

It never has a ZIP Code to itself

At 1,930 homes to the square mile this is city territory, and district lines in a city follow streets. Greenfield covers 7 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 boundary14,264
• Residents29,251
• ZIP Code areas it reaches5
• Where it is the only district0
• Where it shares with another district4
• Where it holds under half a percent1
• Land area7 square miles
• Homes per square mile1,930

The ZIP Code areas it reaches

Every one of the 4 areas where it holds a real share it shares with somebody. Its largest foothold is 53220 at 59% of the homes; the thinnest is 53129, where it holds 14 homes, under half a percent.

• ZIP Code 53220 · Greenfield, Wisconsin59% of the homes
• ZIP Code 53228 · Greenfield, Wisconsin29% of the homes
• ZIP Code 53221 · Milwaukee, Wisconsin28% of the homes
• ZIP Code 53219 · Milwaukee, Wisconsin2.3% of the homes
• ZIP Code 53129 · Greendale, Wisconsin14 homes, under half a percent

What one name misses in the areas it leads

Greenfield is the largest district in 1 ZIP Code area, and that area is not wholly its own. Answer with its name alone and the answer misses 5,026 of the 12,187 homes that area holds. That count is computed here from census blocks; the lookups that answer this question with a single name never print it.

Greenfield holds 7,161 of the 12,187 homes in ZIP Code 53220 · Greenfield, Wisconsin, so its name is right for most of the area and wrong for the rest: 5,009 homes with Milwaukee and 17 homes in a district too small to name here.

In ZIP Code 53221 · Milwaukee, Wisconsin this district is one name among 4. Milwaukee leads with the largest share and Greenfield holds 4,673 of the 16,682 homes counted there; no single name describes that area at all.

ZIP Code 53228 · Greenfield, Wisconsin repeats the pattern with 4 names holding a real share: 2,045 of its 7,155 homes are Greenfield's, and the other 5,110 are not.

Greenfield is not the name anyone would give for ZIP Code 53219 · Milwaukee, Wisconsin — Milwaukee leads it — and Greenfield holds 371 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

Greenfield 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 — Milwaukee, West Allis and Greendale. They are neighbors on the same postal ground, not the next stop for its own students.

• Milwaukee School District26,094 homes in 4 shared ZIP Code areas
• West Allis School District7,719 homes in 2 shared ZIP Code areas
• Greendale School District6,290 homes in 1 shared ZIP Code area
• Whitnall School District3,589 homes in 1 shared ZIP Code area
• Franklin Public School District305 homes in 1 shared ZIP Code area
• Oak Creek-Franklin School District130 homes in 1 shared ZIP Code area

Who it shares ZIP Codes with

These districts appear alongside Greenfield in the same ZIP Code areas: Milwaukee, West Allis, Franklin Public and Whitnall. 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.

• Milwaukee School District4 shared ZIP areas
• West Allis School District2 shared ZIP areas
• Franklin Public School District1 shared ZIP area
• Whitnall School District1 shared ZIP area
• Oak Creek-Franklin School District1 shared ZIP area

Greenfield and Milwaukee school district boundary: the ZIP Codes they share

• ZIP Code 53219 · Milwaukee, Wisconsin
• ZIP Code 53220 · Greenfield, Wisconsin
• ZIP Code 53221 · Milwaukee, Wisconsin
• ZIP Code 53228 · Greenfield, Wisconsin

Greenfield and West Allis school district boundary: the ZIP Codes they share

• ZIP Code 53219 · Milwaukee, Wisconsin
• ZIP Code 53228 · Greenfield, Wisconsin

Greenfield and Franklin Public school district boundary: the ZIP Codes they share

• ZIP Code 53221 · Milwaukee, Wisconsin

Have a street address?

A ZIP Code names every district that can serve the area; a street address settles which one serves a home. The Census Bureau geocoder takes an exact address and returns its school districts from the current boundary files, free and with no account.

Check an exact address with the Census Geocoder

Where this district sits

• School districts in Wisconsin600 of 781 ZIP areas split
• How to find your school district numberNCES ID 5505940

What to do next

Ask the district office to confirm your street address: look on its site for a school locator, a find my school tool or an attendance zone map, or call the office.

A ZIP Code is a set of mail delivery routes, not a boundary: in 4 of the 5 ZIP Code areas Greenfield 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.

District websites and phone numbers here come from the NCES Common Core of Data directory, 2024-25 school year, filed under the same district ID as the Census boundary files. Where it lists no usable website, none is printed rather than guessed.

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.

Where these numbers come from

The homes were counted in the 2020 Census and the district lines are the 2026 boundary file, so a fast-growing area may have changed since; ZIP Codes here are the Census Bureau's ZIP Code Tabulation Areas; a share is a share of homes, not the chance that one address is in a district; and a district is not a school attendance zone. Every source, file and caveat is on the method page.