Located in the Eastern (GMT -05:00) time zone. Area code 347 serves the state of New York. This area code was assigned on February 19th, 1999. On October 1st, 1999 it went into service. 347 is a General Purpose Code. 347 service area does overlap with 718 917 929 area codes. Dialing pattern for local calls within the same NPA (area code) is 1+10D.