The stockade was removed in 1785 and the building continued service as a church until 1844 when it was replaced by the present Reformed Church in the village. In 1857, the former fort was sold to the State of New York for $800. Through the American Civil War and until 1873, it was used as an armory. Then, it was given to the county for historical use.[citation needed]
In 1888, the Schoharie County Historical Society was formed to operate a museum at the old fort and by 1899, a catalog of 2,500 items was published. The fort is part of the Old Stone Fort Museum complex, which also comprises: the William Badgely Museum and carriage house, built in 1972; the Warner house, a Greek Revival home housing the Scribner Exhibit of 20th Century Communications; the 1830 Jackson law office; the Oliver one-room school house furnished circa 1900; and the Schaeffer-Ingold Dutch barn. Experts on the Dutch Barn have included Harold Zoch (1927–2018), who was Schoharie County Historian.[3]
The research library is available to historians and genealogists. The facility is open to the public from May through October. It was listed on the National Register of Historic Places in 2002.[1]