The Chenango County Courthouse is located at 5 Court Street, Norwich NY 13815; phone: 607‑337‑1430.
Formed from Herkimer and Tioga, March 15, 1798. Sangerfield (Oneida Co.) was taken off in 1804, and Madison County in 1806. It is situated in the interior, a little south-east of the center of the State, and is centrally distant ninety-four miles from Albany, and contains 898 square miles. The surface is a hilly upland, broken by the deep ravines of the streams. Two ridges of highlands extend through the County from north-east to south-west, the first lying between Unadilla and Chenango Rivers and the second between the Chenango and Otselic. These main ridges are subdivided by numerous parallel and lateral valleys, whose declivities are often too steep for profitable cultivation. The summits are broad and rolling, and present a fine plateau of nearly uniform elevation throughout the County. The highest points are from 600 to 800 feet above the principal valleys.
Susquehanna River flows south-west through the south-east corner, receiving as tributaries Unadilla River and numerous other smaller streams. The Unadilla forms the principal part of the eastern boundary of the County; its tributaries are Beaver Creek, Shawler, Great and Kent Brooks. Chenango River flows in a southerly direction, from the north border to near the center, and thence south-westerly to the south-west corner. From the east its tributaries are Handsome Eddy, Padgets and Pages Brooks, and from the west, Canasawacta, Fly Meadow, Ludlow and Genegantslet Creeks, and Pleasant, Fly, Cold and Mill Brooks. Otselic River flows through the north-west corner in a south-west direction, receiving from the east, Middletown Brook and Brackel Creek, and from the west, Manus, Buck and Ashbel Brooks and Mud Creek. Numerous ponds are interspersed among the hills, in basins, far above the valleys of the streams. The valleys of the Susquehanna and Chenango Rivers are among the finest in the State. They consist of fine intervales, about a mile in width, highly cultivated and bordered for the most part with finely wooded hillsides. The valleys of the County appear to have been formed by the action of large currents of water, which have plowed deep furrows in the gently rolling region which probably once formed the general face of the County.