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Guilderland, NY ZIP Codes

Guilderland, New York has 4 ZIP codes: 4 for street addresses (, , and ).

Your street decides which one you use.

Which Guilderland ZIP code is my address in?

Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?

Guilderland ZIP code map

ZIP code map of Guilderland, NY4 ZIP code areas in Guilderland: 12009, 12084, 12085, 12303. Dashed line: Guilderland limits. Grey areas: neighboring towns.12009123031208412085120091230312084SchenectadyVoorheesvilleDuanesburgSlingerlandsAlbanyBerneEast BerneDelansonDelmarRexfordLatham1200912303SchenectadyVoorheesvilleDuanesburgSlingerlandsAlbanyBerneEast BerneDelansonDelmar

Tap or point to an area to see its ZIP code.Full-size map

Dashed line: Guilderland town limits.

Map: Census Bureau ZIP Code Tabulation Areas (2020) and county subdivision limits (2024).

All Guilderland ZIP codes by type

ZIPType and post office or station
12009street delivery; mail may be addressed to Altamont
Altamont
12084street delivery
Guilderland
12085street delivery; mail may be addressed to Guilderland Center
Guilderland Center
12303street delivery; mail may be addressed to Schenectady
Heritage

ZIP codes from nearby towns that reach into Guilderland

  • 12186, mailing town Voorheesville, covers 8 percent of Guilderland
  • 12203, mailing town Albany, covers 8 percent of Guilderland
  • 12159, mailing town Slingerlands, covers 4 percent of Guilderland
  • 12306, mailing town Schenectady, covers 3 percent of Guilderland

Why your mail may say Guilderland when you live outside it

Guilderland ZIP codes also cover Knox, Rotterdam and Altamont, so a letter addressed to Guilderland can go to a home outside the town limits.

The reverse happens too: parts of Guilderland use 12186, 12203, 12159 and 12306, which mail under a neighboring town's name.

A ZIP code does not set your city, school district or tax. Albany County property records show which city you are in.

Guilderland ZIP code questions

What is the main ZIP code for Guilderland?

12084, the ZIP code of the main Guilderland post office at 11 New Karner Rd.

What county is Guilderland in?

Albany County.

ZIP codes for towns near Guilderland

Schenectady, NY11 ZIP codes: 12302, 12303, 12304 and more · 7 milesTown of Rotterdam, NY2 ZIP codes: 12150, 12306 · 8 milesAlbany, NY48 ZIP codes: 12202, 12203, 12204 and more · 9 milesTown of Colonie, NY6 ZIP codes: 12047, 12110, 12189 and more · 9 milesBethlehem, NY4 ZIP codes: 12054, 12077, 12158 and more · 11 milesClifton Park, NY4 ZIP codes: 12019, 12065, 12148 and more · 13 miles

More towns near Guilderland: Troy, Pittsfield, Utica, Poughkeepsie, Northampton, Town of Poughkeepsie, Westfield, Torrington, Holyoke.

Sources and last checked

USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.

Checked October 20, 2026. Sources · How we build our lists · Corrections