Passport Application Services - Afton 31 W 4th Ave Afton, WY 83110 Phone : (307) 886-3625 Business Category Passport Application Services Toll-Free           (800) ASK-USPS Fax           (307) 886-9416 Post Office - Afton 31 W 4th Ave Afton, WY 83110 Phone : (307) 886-3625 Business Category Post Offices Toll-Free           (800) ASK-USPS Fax           (307) 886-9416