ZIP CodesZIP codes in Madison County, Idaho
Madison County, Idaho has 4 ZIP codes in this list, from 83440 to 83460. They cover 2 places, among them Rexburg and Sugar City.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 83440 | Rexburg | 182 | 43.810, -111.789 |
| 83441 | Rexburg | no area | 43.776, -111.691 |
| 83448 | Sugar City | 28.8 | 43.848, -111.693 |
| 83460 | Rexburg | 0.3 | 43.826, -111.790 |
The ZIP code areas of Madison County add up to about 211 square miles of land (546 sq km) as the Census Bureau draws them. The largest is 83440 (Rexburg), with 182 square miles.
Places with more than one code here: Rexburg (3 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Rexburg, ID 83440.
- 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.