Post Office in Fairfield, CA - Solano County - Hubbiz May 2026

United States Postal Service-Usps - Post Offices -- Main Office

Post Offices

600 Kentucky St

Fairfield - CA

(707) 425-2789
United States Government - Internal Revenue Service - Refund Status-Self Serve

Post Offices

1350 Travis Blvd

Fairfield - CA

(800) 829-4477
United States Government - Social Security Administration - General Information and Services - Office Location

Post Offices

2500 Hilborn Rd

Fairfield - CA

(800) 772-1213