Keywords: Advanced Search Government Sort By: Business Name ↑ | ZIP Code ↑ Sort By:Sort By: Business Name ↑ ZIP Code ↑ Board of Chosen Freeholders (973) 579-0210 Government Business Tags: Government, Sussex CountyZIP Code: 07860 View 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