20210716 16260500 1.0 TRUE NYS County Boundaries Publication Date: October 2017. A vector polygon GIS file of all county boundaries in New York State. The file was originally a compilation of U.S. Geological Survey 1:100,000-scale digital vector files and NYS Department of Transportation 1:24,000-scale and 1:75,000-scale digital vector files. Boundaries were revised to 1:24,000-scale positional accuracy and selectively updated based on court decisions. Currently, boundary changes are made as needed based on authoritative sources. NYS Office of Information Technology Services GIS Program Office (GPO)