Breadcrumb Ag Home Extension County Extension Offices Williams County Services Page Title Services Body NDSU Extension - Williams County offers the following services: Hay Bale Probe Soil Sample Bags Forage Nitrate QuikTest Livestock Water Quality Test ND Farm Record Books Pressure Canner Tester Moisture Meter County Extension Office Williams County 4-H Contact Us Events Services Subscribe Widgets Contact Info Williams County Mailing address: Address PO Box 1109 Williston, ND 58802-1109 United States Physical Address: 5218 141st Ave NW Williston, ND 58801 Phone 701-577-4595 Email NDSU.Williams.Extension@ndsu.edu URL Visit website