 Tech Valley then evolved into a 19-county region in eastern New York stretching from the Canadian-US border to the northern suburbs of the city of New York.The 19 counties were Albany, Clinton, Columbia, Dutchess, Essex, Franklin, Fulton, Greene, Hamilton, Herkimer, Montgomery, Orange, Rensselaer, Saratoga, Schenectady, Schoharie, Ulster, Warren, and Washington.That region was 15,637 square miles, about 270 miles north-south at its longest and about 80 miles east-west at its widest.