Hilo, HI ZIP Codes
Hilo, Hawaii has 2 ZIP codes: for street addresses and for PO boxes.
Mail addressed to Hilo covers nearby places too.
Where the 96720 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
96721 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: the Hilo Census outline.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Hilo
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?
Hilo PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 96720 | street delivery Hilo |
| 96721 | PO boxes at the Downtown Hilo post office Downtown Hilo |
Why your mail may say Hilo when you live outside it
Hilo ZIP codes also cover Wainaku and Paukaa, so a letter addressed to Hilo can go to a home outside the town.
A ZIP code does not set your city, school district or tax. Hawaii County property records show which city you are in.
Hilo ZIP code questions
What is the main ZIP code for Hilo?
96720, the ZIP code of the main Hilo post office at 1299 Kekuanaoa St.
Which Hilo ZIP codes are for PO boxes only?
96721. Mail to it goes to boxes at the post office, not to street addresses.
What county is Hilo in?
Hawaii County.
ZIP codes for towns near Hilo
More towns near Hilo: San Francisco, Pacifica, San Bruno, Daly City, Burlingame, Santa Cruz, South San Francisco, San Mateo, Seaside.
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