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ZIP Codes for MASON CITY, Illinois. Use our address lookup or code list to find the correct 5-digit or 9-digit (ZIP+4) code for your postal mails destination.
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5 days ago · 62664 is the only ZIP Code for Mason City, IL. Enter an Address to find the ZIP+4: The ZIP+4 code is an extension of the five-digit ZIP code used by the USPS. The four extra digits are added after a hyphen to the standard five-digit ZIP code.
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Mason City is a city in Mason County, Illinois, United States. The population was 2,077 at the 2020 census, [3] down from 2,343 in 2010 . History [ edit] Mason City was established in 1857. The city took its name from Mason County. [4] Geography [ edit]
List of all Zip Codes for the state of Mason City, Illinois. Includes all counties and cities in Mason City, IL.
