Keithsburg IL ZIP Code

Keithsburg city is located in Illinois State, Mercer County and has a unique zip code assigned by the US Postal Service Office.

You can search for the Keithsburg IL zip code by its streets and block numbers if we have some of the Keithsburg streets loaded in our website

Keithsburg Area Code is 309 and Time Zone is Central (GMT -06:00).

Keithsburg Zip Code - Illinois

The US ZIP Code basic format consists of five decimal numerical digits assigned to the Keithsburg City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Keithsburg ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Keithsburg, Illinois.

The Keithsburg Zip Code is 61442.

If you want to send a mail to Keithsburg City, you should use the 61442 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Keithsburg ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 61442 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Keithsburg city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Illinois.

Keithsburg, Illinois - MAP

What is the Keithsburg Zip Code?

The Keithsburg Zip Code in Illinois is 61442.

ZIP Plus 4 Keithsburg - US Streets Zip Codes

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What is the zip code for Keithsburg IL?


Keithsburg, Illinois - US Zip Code

Keithsburg ZIP Code Lookup

61442 Zip Code File:
Zip Code: 61442,
City: Keithsburg
Keithsburg Area Code: 309
Keithsburg, IL - Time Zone: Central (GMT -06:00)
County: Mercer
City Alias: Keithsburg
State: Illinois
State Abb: IL

Illinois Zip+4 - Nearby Keithsburg Cities

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