Mason City is the actual or alternate city name associated with 2 ZIP Codes by the US Postal Service.
Select a particular Mason City ZIP Code to view a more detailed map and the number of Business, Residential, and PO Box addresses for that ZIP Code. The Residential addresses are segmented by both Single and Multi-family addessses.
Each individual Mason City ZIP Code profile also includes Demographic Data including Population, Housing, Income, Households, and Growth Rates.Photos of the local Mason City, IA area
|Mason City, IA - Standard ZIP Codes|
|Mason City, IA - PO Box ZIP Codes (NO DEMOGRAPHIC DATA)|
The Mason City ZIP Code maps and basic ZIP Code information such as the number of Business, Residential and PO Box addresses in the ZIP Code are updated 4 times per year. Last update: May 1, 2018.
The DEMOGRAPHIC DATA for each Mason City ZIP Code is updated annually. The last update was on July 1, 2017 and includes: