Town Hall Address 102 E Market St. Diamond, MO 64840 United States- Newton County Website https://www.diamondmo.net Fire District 417-325-4442 100 N. Washington St. Diamond, MO 64840 United States Town Clerk 417-325-4220 102 E Market St. Diamond, MO 64840 United States Water 417-325-4220 102 E Market St. Diamond, MO 64840 United States Tax Collector 417-325-4220 102 E Market St. Diamond, MO 64840 United States County Newton