All List of zip code Colby area? us Colby city Post Office Details

Updated: 22-07-2025

List of Zip Codes Colby, us Location
City	Zip Code	State	County	Country
Colby	54421	WI	Clark	United States
Colby	67701	KS	Thomas	United States

USPS is operated by an 11-person Board of Governors, which resembles the board of directors of a public corporation - the Postmaster General, his deputy (currently vacant), and nine governors appointed by the President and approved by the Senate for seven-year terms.

Check Details Area Colby Postal Code.

Colby Area Zip Code is 54421 State WI County Clark, United States.
Colby Area Zip Code is 67701 State KS County Thomas, United States.

United States Postal Service

The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, including its insular areas and associated states.

What does the US Postal Service do?

The Postal Service provides mail processing and delivery services to individuals and businesses in the U.S.

Who owns and runs the US Postal Service?

Why was the US Postal Service created?

Making sure that the mail was delivered as quickly and dependably as possible was critical to the colonies' survival. That's why three months after the battles of Lexington and Concord, the Continental Congress turned to Benjamin Franklin to establish a national post service as the first Postmaster General.

Why postal is important?

An efficient postal service, in addition to promoting national cohesion, provides an essential infrastructure for the expansion of industry and commerce. Postal money transfer and savings services are particularly valuable in developing economies, where banking facilities are limited.