Passport Application Services - Montpelier 804 Grant St Montpelier, ID 83254 Phone : (208) 847-1894 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Fax           (208) 847-3613 Post Office - Montpelier 804 Grant St Montpelier, ID 83254 Phone : (208) 847-1894 Post Office - Montpelier Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (208) 847-3613