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The population was 4,130 at the 2000 census. The postal ZIP code is 12428; the telephone exchange is predominantly 647 and an overlaid 210 in the 845 area code.
is within the Town of Wawarsing, approximately ninety miles northwest of New York City and ninety miles southwest of Albany. The village is located at the junction of Routes NY 52 and US 209 and is bisected by the recently-designated Shawangunk Scenic Byway. Ellenville lies in the Rondout Valley, at the eastern base of the Catskill Mountains, and the western base of the Shawangunk Ridge, which is listed as one of the "Last Great Places on Earth."
The north-flowing Sandburg Creek and east-flowing Good Beer Kill intersect in Ellenville near the current site of the Ellenville Central School to become the Rondout Creek, which flows north to join the Hudson River near Kingston. Ellenville is within the Hudson River Valley National Heritage Area.
According to the United States Census Bureau, the village has a total area of 22.7 km² (8.8 mi²). 22.6 km² (8.7 mi²) of it is land and 0.2 km² (0.1 mi²) of it is water. The total area is 0.68% water.