Keywords: Advanced Search Community Service Sort By: Business Name ↑ | ZIP Code ↑ (Reset)Sort By:Sort By: Business Name ↑ ZIP Code ↑(Reset) Town of Newton 973-383-3521 Government Newton is the county seat of Sussex County, New Jersey, and was settled in 1751. Business Website: NewtonTownHall.comBusiness Tags: Community Service, Government, Public ServiceZIP Code: 07860 View