The town clerk's office for Northampton is located in the Village of Northville. The address is: 412 S. Main St., Northville, NY 12134 phone: (518) 863-4040. Kelly Yacobucci Montgomery Co. Dept. of History & Archives > Thanks for your email. I would like tow rite to the town clerk of > Northampton, Fulton County, but do not have a zip code number. Do you know > if the name of that town has been changed to something else. What town is it > near? Thanks for your interest and reply. Dorothy