Gahanna, OH ZIP Code
Gahanna, Ohio has one ZIP code: .
Mail addressed to Gahanna covers nearby places too.
Where the 43230 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Gahanna city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Gahanna
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 Gahanna
- 43054, mailing town New Albany, covers 7 percent of Gahanna
Why your mail may say Gahanna when you live outside it
Gahanna ZIP codes also cover Mifflin Township, so a letter addressed to Gahanna can go to a home outside the city limits.
The reverse happens too: parts of Gahanna use 43054, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Franklin County property records show which city you are in.
Gahanna ZIP code questions
What is the main ZIP code for Gahanna?
43230, the ZIP code of the main Gahanna post office at 246 Lincoln Cir Suite H.
What county is Gahanna in?
Franklin County.
ZIP codes for towns near Gahanna
More towns near Gahanna: Grove City, Delaware, Newark, Lancaster, Marion, Springfield, Mansfield, Fairborn, Beavercreek.
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