Town Hall Address 691 Water St. Belvidere, NJ 07823 United States- Warren County Website https://www.belvidere-nj.us/ County Clerk 908-475-5331 Ext. 104 691 Water St. Belvidere, NJ 07823 United States Assessor 908-475-5331 Ext. 113 Friday: 2:30 P.M. - 4:30 P.M. 691 Water St. Belvidere, NJ 07823 United States Tax Collector 908-475-5331 Ext. 109 Wednesday: 5:00 P.M. - 9:00 P.M. 691 Water St. Belvidere, NJ 07823 United States Attorney 908-788-8100 691 Water St. Belvidere, NJ 07823 United States Mayor 908-475-5331 691 Water St. Belvidere, NJ 07823 United States Municipal Court 908-475-5331 Ext. 108 691 Water St. Belvidere, NJ 07823 United States Town Hall Hours 9:00 am to 4:30 pm, Monday through Friday County Warren