Area code 845 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New York. The numbering plan area comprises the mid- and lower Hudson Valley, specifically Orange, Putnam, Rockland, and Ulster counties, and parts of Columbia, Delaware, Dutchess, Greene, and Sullivan counties. The area code was created on June 5, 2000, by an area code split from most of the territory of area code 914, which was retained by Westchester County. Prior to October 2021, area code 845 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021. In April 2022, the North American Numbering Plan Administrator (NANPA) announced a new area code, 329, was scheduled to overlay 845 on March 24, 2023. Service area Numbering plan area 845 includes the following communities. Airmont Beacon Beekman Blauvelt Brewster Carmel Chester Chestnut Ridge Clarkstown Clinton Corners Congers Cornwall Cold Spring Cottekill Crawford Dover Plains East Fishkill Fishkill Fleischmanns Garrison Goshen Halcott Haverstraw High Falls Highland Hopewell Junction Hyde Park Jeffersonville Kingston LaGrange Liberty Mahopac Margaretville Middletown Millbrook Monroe Monsey Montebello Monticello Montgomery Nanuet Nelsonville Newburgh New City New Paltz New Windsor Nyack Olive Orangetown Patterson Pawling Pearl River Phoenicia Piermont Pleasant Valley Pine Bush Pomona Port Jervis Poughkeepsie Red Hook Rhinebeck Rosendale Saugerties Sloatsburg Spring Valley Staatsburg Stone Ridge Stony Point Suffern Tappan Valley Cottage Walden Wallkill Wappingers Falls Warwick Washingtonville Wingdale West Nyack West Point Woodbury Woodstock References External links 845 845 Rockland County, New York