The area code 934 is located in Babylon, New York.
Area code 934 serves Babylon, New York, and the rest of Suffolk County on Long Island’s South Shore. It is an overlay of area code 631, which means both codes cover the same geographic area and support the growing demand for phone numbers. Babylon sits within the New York City metro area, giving residents and businesses access to regional services while keeping a local Suffolk identity. Calls within the region now use 10-digit dialing, but existing 631 numbers did not change when 934 was added.
This area code reaches many well-known communities and landmarks across eastern Long Island, including beaches, universities, and historic sites. In and around Babylon, 934 covers the Great South Bay, Robert Moses State Park, Captree State Park, and Republic Airport in East Farmingdale. Farther east, it includes the Hamptons, Montauk Point Lighthouse, Fire Island National Seashore, Stony Brook University, and Brookhaven National Laboratory. These destinations make 934 a hub for tourism, research, and everyday commuting.
Suffolk County population: 1,525,920 (U.S. Census Bureau, 2020)
As an overlay, 934 works alongside 631 to keep local calling consistent while adding number capacity for new phones, businesses, and services. New lines may receive a 934 number, while neighbors may keep 631—both are local and serve the same communities. If you see a 934 phone number, it’s almost certainly tied to Suffolk County, NY, including Babylon and nearby South Shore towns on Long Island.