59403 ZIP Code — Great Falls, MT
Cascade County, Montana
ZIP code 59403 is located in Great Falls, Montana, within Cascade County. It covers approximately 0.00 square miles and serves a population of 0 residents. This is a standard ZIP code in the Mountain (MT) timezone, served by area code 406.
0
population
0.00
sq mi land
Standard
ZIP type
Mountain (MT)
timezone
59403 ZIP code map
Cities in ZIP code 59403
Below are the cities the US Postal Service accepts for ZIP code 59403. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Great Falls | Acceptable |
Demographics
updated 06/2026
| Population | |
|---|---|
| Total population | 0 |
| Population density | 0 / sq mi |
| State FIPS | 30 |
| County FIPS | 013 |
| Geography | |
|---|---|
| Land area | 0.00 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 47.5001 |
| Longitude | -111.3003 |
| Timezone | Mountain (MT) |
| Area code | 406 |