Town Hall Address 210 Main St. Johnsonburg, NJ 07825 United States- Warren County Website https://www.frelinghuysen-nj.us/ County Clerk 908-853-4121 Monday - Friday: 7:30 A.M. - 3:30 P.M. 210 Main St. Johnsonburg, NJ 07825 United States Assessor 908-852-4121 Friday: 10:30 A.M. - 12:00 P.M. 138 Mountain Rd. Ringoes, NJ 08551 United States Tax Collector 908-852-4121 Wednesday: 9:00 A.M. - 11:30 A.M. 210 Main St. Johnsonburg, NJ 07825 United States Attorney 973-644-0770 210 Main St. Johnsonburg, NJ 07825 United States Mayor 201-259-6559 210 Main St. Johnsonburg, NJ 07825 United States Municipal Court 908-496-4131 628 Rt. 94 Columbia, NJ 07832 United States Town Hall Hours Monday - Friday 7:30-3:30 County Warren