Marion, IA ZIP Code
Marion, Iowa has one ZIP code: .
Mail addressed to Marion covers nearby places too.
Where the 52302 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Marion city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Marion
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
ZIP codes from nearby towns that reach into Marion
- 52403, mailing town Cedar Rapids, covers 3 percent of Marion
Why your mail may say Marion when you live outside it
Marion ZIP codes also cover Robins, so a letter addressed to Marion can go to a home outside the city limits.
The reverse happens too: parts of Marion use 52403, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Linn County property records show which city you are in.
Marion ZIP code questions
What is the main ZIP code for Marion?
52302, the ZIP code of the main Marion post office at 3800 Business Highway 151.
What county is Marion in?
Linn County.
ZIP codes for towns near Marion
More towns near Marion: Rock Island, Bettendorf, Moline, Ames, Ankeny, Des Moines, Urbandale, West Des Moines, La Crosse.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections