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Montgomery County Public Schools

Maryland · runs pre-K through grade 12

NCES ID 2400480 · montgomeryschoolsmd.org · (240) 740-3000

Montgomery County covers 404,423 of the homes in 53 ZIP Code areas, but its smallest measured presence is a different thing entirely: in ZIP Code area 20707 it holds 86 of 15,693 homes, or 0.5% of them. An address in that ZIP Code is almost certainly not in this district, and a lookup that names the district without the share says the opposite. Below the half-percent line this page draws it reaches 2 further ZIP Code areas, the least of them no homes at all in 20894.

A few homes at the edge of someone else's ZIP Code

No district in Maryland covers more homes. That size is what makes the counts below unusual: Montgomery County reaches 53 ZIP Code areas, and in 41 of them it is the only district with a real share.

  • Homes inside the boundary404,423
  • Residents1,062,061
  • ZIP Code areas it reaches53
  • Where it is the only district41
  • Where it shares with another district10
  • Where it holds under half a percent2
  • Land area493 square miles
  • Homes per square mile820

The ZIP Code areas it reaches

The spread is the thing to notice. In 20906 this district holds 100% of the homes; in 20894 it holds no homes at all. 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 20906 · Aspen Hill, Maryland100% of the homes
  • ZIP Code 20878 · Gaithersburg, Maryland100% of the homes
  • ZIP Code 20874 · Darnestown, Maryland100% of the homes
  • ZIP Code 20910 · Silver Spring, Maryland100% of the homes
  • ZIP Code 20852 · North Bethesda, Maryland100% of the homes
  • ZIP Code 20850 · Rockville, Maryland100% of the homes
  • ZIP Code 20902 · Wheaton, Maryland100% of the homes
  • ZIP Code 20854 · Potomac, Maryland100% of the homes
  • ZIP Code 20814 · Bethesda, Maryland100% of the homes
  • ZIP Code 20815 · Chevy Chase, Maryland100% of the homes
  • ZIP Code 20817 · Bethesda, Maryland100% of the homes
  • ZIP Code 20877 · Gaithersburg, Maryland100% of the homes
  • ZIP Code 20901 · Silver Spring, Maryland100% of the homes
  • ZIP Code 20886 · Montgomery Village, Maryland100% of the homes
  • ZIP Code 20853 · Aspen Hill, Maryland100% of the homes
  • ZIP Code 20832 · Olney, Maryland100% of the homes
  • ZIP Code 20879 · Flower Hill, Maryland100% of the homes
  • ZIP Code 20876 · Germantown, Maryland100% of the homes
  • ZIP Code 20895 · South Kensington, Maryland100% of the homes
  • ZIP Code 20816 · Bethesda, Maryland100% of the homes
  • ZIP Code 20855 · Redland, Maryland100% of the homes
  • ZIP Code 20905 · Cloverly, Maryland100% of the homes
  • ZIP Code 20851 · Rockville, Maryland100% of the homes
  • ZIP Code 20866 · Burtonsville, Maryland100% of the homes
  • ZIP Code 20872 · Damascus, Maryland100% of the homes
  • ZIP Code 20882 · Damascus, Maryland100% of the homes
  • ZIP Code 20841 · Ten Mile Creek, Maryland100% of the homes
  • ZIP Code 20837 · Poolesville, Maryland100% of the homes
  • ZIP Code 20861 · Ashton-Sandy Spring, Maryland100% of the homes
  • ZIP Code 20860 · Ashton-Sandy Spring, Maryland100% of the homes
  • ZIP Code 20818 · Cabin John, Maryland100% of the homes
  • ZIP Code 20896 · Garrett Park, Maryland100% of the homes
  • ZIP Code 20880 · Washington Grove, Maryland100% of the homes
  • ZIP Code 20868 · Burtonsville, Maryland100% of the homes
  • ZIP Code 20862 · Ashton-Sandy Spring, Maryland100% of the homes
  • ZIP Code 20899 · Gaithersburg, Maryland100% of the homes
  • ZIP Code 20812 · Glen Echo, Maryland100% of the homes
  • ZIP Code 20838 · Barnesville, Maryland100% of the homes
  • ZIP Code 20839 · Montgomery County, Maryland100% of the homes
  • ZIP Code 20889 · Bethesda, Maryland18 of 18 homes
  • ZIP Code 20892 · Bethesda, Maryland1 of 1 home
  • ZIP Code 20833 · Olney, Maryland98% of the homes
  • ZIP Code 20871 · Clarksburg, Maryland98% of the homes
  • ZIP Code 20904 · Colesville, Maryland94% of the homes
  • ZIP Code 20912 · Takoma Park, Maryland88% of the homes
  • ZIP Code 20842 · Montgomery County, Maryland83% of the homes
  • ZIP Code 20903 · Hillandale, Maryland82% of the homes
  • ZIP Code 20777 · Highland, Maryland1.3% of the homes
  • ZIP Code 21771 · Green Valley, Maryland1.2% of the homes
  • ZIP Code 20705 · Beltsville, Maryland0.9% of the homes
  • ZIP Code 20707 · Laurel, Maryland0.5% of the homes
  • ZIP Code 21797 · Lisbon, Maryland12 homes, under half a percent
  • ZIP Code 20894 · Bethesda, Marylandno homes at all

What an answer of one district name misses here

Montgomery County is the largest district in 47 ZIP Code areas. Answer with its name alone and the answer misses 4,435 of the 408,524 homes those areas hold — though in 41 of them it holds every home there is. The count is homes, not addresses, and it is the number no lookup prints.

ZIP Code 20904 · Colesville, Maryland is a two-district area: 20,908 of its 22,360 homes are inside Montgomery County, and the other 1,452 homes are with Prince George's County. Which one an address belongs to is settled by the street, not by the five digits.

In ZIP Code 20903 · Hillandale, Maryland the split runs 5,844 to 1,324 and the larger part is Montgomery County's: the rest is 1,324 homes with Prince George's County.

In ZIP Code 20812 · Glen Echo, Maryland the single-name answer is the true one: Montgomery County holds all 103 homes counted there, and no other district holds a share worth naming.

ZIP Code 20814 · Bethesda, Maryland is another area where one name covers everything — 15,991 homes, all of them inside Montgomery County.

Montgomery County is not the name anyone would give for ZIP Code 21771 · Green Valley, Maryland — Frederick County leads it — and Montgomery County holds 133 homes there all the same. Answer that area with one name and that is what it is wrong about.

ZIP Code 20705 · Beltsville, Maryland is another area where Montgomery County is present without being the answer: 87 of its 9,855 homes, behind Prince George's County.

Who takes the other homes in its ZIP Codes

Montgomery County 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 — Prince George's County, Carroll County and Frederick County. They are neighbors on the same postal ground, not the next stop for its own students.

Who it shares ZIP Codes with

These districts appear alongside Montgomery County in the same ZIP Code areas: Prince George's County, Frederick County, Howard County and Carroll County. 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.

Montgomery County and Prince George's County school district boundary: the ZIP Codes they share

  • ZIP Code 20705 · Beltsville, Maryland
  • ZIP Code 20707 · Laurel, Maryland
  • ZIP Code 20903 · Hillandale, Maryland
  • ZIP Code 20904 · Colesville, Maryland
  • ZIP Code 20912 · Takoma Park, Maryland

Montgomery County and Frederick County school district boundary: the ZIP Codes they share

  • ZIP Code 20842 · Montgomery County, Maryland
  • ZIP Code 20871 · Clarksburg, Maryland
  • ZIP Code 21771 · Green Valley, Maryland

Montgomery County and Howard County school district boundary: the ZIP Codes they share

  • ZIP Code 20777 · Highland, Maryland
  • ZIP Code 20833 · Olney, Maryland
  • ZIP Code 21771 · Green Valley, Maryland

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

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 10 of the 53 ZIP Code areas Montgomery County 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.