Olmstedville is a hamlet in the town of Minerva in Essex County, New York, United States, in Adirondack Park. Historically, it has been the largest settlement in the town of Minerva. Today, it has its own post office and Minerva Central School is located there. One of two stations of Minerva Fire & Rescue is also located in Olmstedville. Community still remains as a largest hamlet in the town.