Tryon County, as Montgomery County was originally known, was set off from Albany County in 1772 on the petition of Sir William Johnson and named Tryon in honor of his friend, the Colonial Governor William Tryon. Johnstown was set up as the county seat. After the close of the Revolutionary War, the name of the county was changed to Montgomery in honor of General Richard Montgomery. All the land south of Oneida Lake and west of Utica to the present city of Buffalo was named Whitestown, in honor of early pioneer Hugh White, and was added to Montgomery County.
Visit the U.S. Census Website for an array of demographic information.
U.S. Census information
Your link for the official Montgomery County Website.