Town Hall Address 65 Main St. Sparta, NJ 07871 United States- Sussex County Website http://www.spartanj.org County Clerk 973-729-4493 65 Main St. Sparta, NJ 07871 United States Assessor 973-729-2626 65 Main St. Sparta, NJ 07871 United States Tax Collector 973-729-4903 65 Main St. Sparta, NJ 07871 United States Attorney 973-729-1880 65 Main St. Sparta, NJ 07871 United States Mayor 973-729-4493 65 Main St. Sparta, NJ 07871 United States Municipal Court 973-729-3501 65 Main St. Sparta, NJ 07871 United States County Sussex