Mason City Iowa Zip Code - Enter an address to find the zip+4: Central heights, emery, freeman, hanford, portland, winnebago heights stats and demographics for the. Web zip codes for mason city, iowa. Web 50401 & 50402 (po box) are the only zip codes for mason city, ia. In 1870, mason city, iowa was officially incorporated as a town.
Web zip codes for mason city, iowa. Web 50401 & 50402 (po box) are the only zip codes for mason city, ia. In 1870, mason city, iowa was officially incorporated as a town. Central heights, emery, freeman, hanford, portland, winnebago heights stats and demographics for the. Enter an address to find the zip+4: