ZIP Codes in Idaho Falls, ID
Idaho Falls uses 4 ZIP codes, all in Bonneville County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 4 Idaho Falls ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 83401 | standard | Bonneville | 47,972 |
| 83402 | standard | Bonneville | 29,994 |
| 83404 | standard | Bonneville | 27,500 |
| 83406 | standard | Bonneville | 19,696 |
Finding a ZIP+4 in Idaho Falls
Knowing which of these 4 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Idaho Falls street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Idaho Falls addresses and download it complete.