Centereach, NY ZIP Code
Centereach, New York has one ZIP code: .
Mail addressed to Centereach covers nearby places too.
Where the 11720 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: the Centereach Census outline.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Centereach
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?
ZIP codes from nearby towns that reach into Centereach
- 11779, mailing town Ronkonkoma, covers 7 percent of Centereach
Why your mail may say Centereach when you live outside it
A letter addressed to Centereach can go to a home outside the town, because ZIP areas follow delivery routes, not town lines.
The reverse happens too: parts of Centereach use 11779, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Suffolk County property records show which city you are in.
Centereach ZIP code questions
What is the main ZIP code for Centereach?
11720, the ZIP code of the main Centereach post office at 245 Centereach Mall.
What county is Centereach in?
Suffolk County.
ZIP codes for towns near Centereach
More towns near Centereach: Bay Shore, Town of Huntington, Huntington Station, West Babylon, Town of Babylon, Town of Riverhead, Bridgeport, Town of Oyster Bay, Stratford.
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