Town Hall Address 30 N. Main St. Pennington, NJ 08534 United States- Mercer County Website http://www.penningtonboro.org County Clerk 609-737-0276 Monday - Friday: 8:30 A.M. - 4:30 P.M. 30 N. Main St. Pennington, NJ 08534 United States Assessor 609-737-0276 Monday: 5:30 P.M. - 7:30 P.M. 30 N. Main St. Pennington, NJ 08534 United States Tax Collector 609-737-0276 Monday - Friday: 9:00 A.M. - 5:00 P.M. 30 N. Main St. Pennington, NJ 08534 United States Attorney 609-695-2111 30 N. Main St. Pennington, NJ 08534 United States Mayor 609-737-0276 30 N. Main St. Pennington, NJ 08534 United States Municipal Court 609-737-1016 30 N. Main St. Pennington, NJ 08534 United States County Mercer