United States Government--postal Service-u S, Kellnersville 1216 Main Whitelaw, WI 54247 Phone : (920) 732-3555 Business Category Government Offices & Public Schools Post Office - Kellnersville 1216 Main St Kellnersville, WI 54215 Phone : (920) 732-3555 Post Office - Kellnersville Business Category Post Offices Toll-Free           (800) ASK-USPS