Washington County Post Office

Find Washington County Iowa post offices and USPS mailing boxes. Post offices provide information on bulk mail services, domestic mail delivery, international shipping, change of address, mail forwarding, PO boxes, and passport services.


Ainsworth Post Office 150 North Railroad Street Ainsworth IA 52201 319-657-3191


Brighton Post Office 102 North Van Buren Street Brighton IA 52540 319-694-3810

Crawfordsville Post Office 111 East Vine Street Crawfordsville IA 52621 319-658-3281

Kalona Post Office 302 5th Street Kalona IA 52247 319-656-2422

Riverside Post Office 81 Greene Street Riverside IA 52327 319-648-2051

Washington Post Office 115 North Marion Avenue Washington IA 52353 319-653-2385

Wellman Post Office 310 9th Avenue Wellman IA 52356 319-646-2831

About Washington County Post Offices

Washington County Post Offices are branch locations of the customer service postal facilities of the United States Postal Service (USPS) in Washington County, IA. The USPS is an independent agency of the federal government that provides mail and package delivery services to all states and territories. Washington County post offices are supported entirely by revenues generated by their own operations. Operational authority over the USPS lies with a Board of Governors and rate setting authority falls under the Postal Rate Commission.

You may contact the Post Office for questions about:
  • Washington County Post Office hours and locations
  • Mail and package delivery services
  • Washington County PO Box services
  • Passport applications and renewals
  • Washington County Post Office jobs and employment
USPS Mail Services

The USPS uses a vast network of Post Offices, Processing and Distribution Centers, Priority Mail Processing Centers, Air Mail Centers, and Bulk Mail Centers to sort, process, distribute, and deliver mail. Washington County Post Offices serve as one of the primary points of customer contact in the mail delivery process.

Washington County Mail Delivery Services

Post Offices in Washington County accept mail and packages from senders, offering a range of mailing and pricing options. The most common form of mail delivery, and one for which the Washington County USPS has a legal monopoly, is residential first-class mail. First-class mail is designed for envelopes and lightweight packages, and it provides delivery to any location in the U.S. at a flat rate of one first-class mail stamp. Multiple other mailing options are available for letters and packages of any size. Priority mail options provide faster delivery at a higher cost than first-class mail. Washington County Post Offices sell stamps, shipping supplies, and certain collectors' and gift items. Customers can also choose Registered, Certified, and Return Receipt mail for varying degrees of verification of an item's delivery. Post Offices also sell money orders. Shipping and customs forms are also available at Washington County Post Offices.

Washington County PO Boxes

Businesses and residential customers can also use the Post Office to receive their mail instead of choosing delivery to their door. Post Office Boxes, also called P.O. Boxes, are available for rent in multiple sizes for a monthly rental fee.

Washington County Passport Applications & Renewals

The Washington County Post Office provides passport services. Passport services in Washington County may include help with renewing passports, applying for a new passport, changing names on a passport, and processing expedited passport services. Passport acceptance services provided by Washington County Post Offices often require having a scheduled appointment.