ZIP CodesZIP codes in Bonneville County, Idaho
Bonneville County, Idaho has 11 ZIP codes in this list, from 83401 to 83454. They cover 5 places, among them Idaho Falls, Iona, Irwin and Swan Valley.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 83401 | Idaho Falls | 197 | 43.552, -111.892 |
| 83402 | Idaho Falls | 171 | 43.493, -112.058 |
| 83403 | Idaho Falls | no area | 43.467, -112.034 |
| 83404 | Idaho Falls | 25.0 | 43.475, -112.012 |
| 83405 | Idaho Falls | no area | 43.467, -112.034 |
| 83406 | Idaho Falls | 32.0 | 43.473, -111.966 |
| 83415 | Idaho Falls | no area | 43.467, -112.034 |
| 83427 | Iona | 83.3 | 43.526, -111.933 |
| 83428 | Irwin | 249 | 43.386, -111.253 |
| 83449 | Swan Valley | 228 | 43.456, -111.342 |
| 83454 | Ucon | 0.2 | 43.594, -111.957 |
The ZIP code areas of Bonneville County add up to about 986 square miles of land (2,553 sq km) as the Census Bureau draws them. The largest is 83428 (Irwin), with 249 square miles.
Places with more than one code here: Idaho Falls (7 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Idaho Falls, ID 83401.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.