Passport Application Services - Waunakee 101 N Klein Dr Waunakee, WI 53597 Phone : (608) 850-4151 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Post Office - Waunakee 101 N Klein Dr Waunakee, WI 53597 Phone : (608) 850-4151 Business Category Post Offices Toll-Free           (800) ASK-USPS