Fillmore is a hamlet in Allegany County, New York, United States, named for President Millard Fillmore in 1850. It was originally known as "The Mouth of the Creek". The former Village of Fillmore dissolved its incorporation and became a community in the Town of Hume in the northwest quadrant of the county. The hamlet is also home to the Hungarian Scout Camp which is the main campsite of the Hungarian Scout Association in Exteris.