Yates County New York
Yates County administrative offices are located at 417 Liberty Street, Penn Yan NY 14527.
Yates County was created in 1823 and named in honor of Governor Joseph C. Yates.
Nathaniel Gorham and Oliver Phelps negotiated with the Indians of the Six Nations of the Iroquois in 1788 to purchase over two-million acres of land between Lake Ontario and Pennsylvania west of the pre-emption line which ran north-south slightly west of Seneca Lake. The purchase encompassed most of Yates County.