Bordered for scores of miles by the once deep and swift Delaware River, covered with rich forests, much of hemlock, and part of the southern tier “wedge” separating the mines of New Jersey and coal fields of Pennsylvania from Hudson River ports, Sullivan County began its existence merely as a thoroughfare for Dutch and Spanish miners in search of precious metals.
Visit the U.S. Census Website for an array of demographic information.
U.S. Census information
Your link for the official Sullivan County Website.