Main city: Penn Yan
Timezone: Eastern
Phone type: Landline
Operator: Verizon New York

Penn Yan, an incorporated village in Yates County, New York, USA. The population was 5,159 at the 2010 census. It is the county seat of Yates County and lies at the north end of the east branch of Keuka Lake, one of the Finger Lakes. ^source

Area code 315 is a telephone area code in upstate New York. It stretches from the eastern border of Monroe County to Little Falls, north to the Canadian border, east to Massena and south to near Cortland. Most of its population lives in Syracuse and its suburbs. Other major population centers include Utica and Watertown. One of the original area codes created in 1947, it has been split once. In 1954, its southern portion was combined with the eastern portion of area code 716 to form area code 607. ^source