Findlay, OH ZIP Codes
Findlay, Ohio has 3 ZIP codes: for street addresses and and for PO boxes.
Mail addressed to Findlay covers nearby places too.
Where the 45840 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
45816 and 45839 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Findlay city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Findlay
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?
Findlay PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 45816 | PO boxes at the Findlay post office Findlay |
| 45839 | PO boxes at the Findlay post office Findlay |
| 45840 | street delivery Findlay |
Why your mail may say Findlay when you live outside it
Findlay ZIP codes also cover Liberty Township, Marion Township and Eagle Township, so a letter addressed to Findlay can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Hancock County property records show which city you are in.
Findlay ZIP code questions
What is the main ZIP code for Findlay?
45840, the ZIP code of the main Findlay post office at 229 W Main Cross St.
Which Findlay ZIP codes are for PO boxes only?
45816 and 45839. Mail to them goes to boxes at the post office, not to street addresses.
What county is Findlay in?
Hancock County.
ZIP codes for towns near Findlay
More towns near Findlay: Dublin, Westerville, Hilliard, Brownstown Township, Upper Arlington, Springfield, Fort Wayne, Pittsfield Township, Gahanna.
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