Town Hall Address 629 Mason St. Grand Marsh, WI 53936 United States- Adams County Website https://newchester.gov Town Clerk 608-472-6182 629 Mason St. Grand Marsh, WI 53936 United States Tax Collector 608-472-6182 629 Mason St. Grand Marsh, WI 53936 United States Town Hall Hours Wednesday: 11:00 AM - 4:00 PM County Adams