| City: | Great Falls, Montana |
| County: | Cascade County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 9:57:45 PM |
| Population: | No Population Data |
| Area Code: | 406 |
| Classification: | PO Box |
| Coordinates: | 47.5001, -111.3003 |
| Quick Link: |
ZIP code 59403 serves as a business-focused postal facility in Great Falls, Montana. This ZIP doesn't have its own residential population. Instead, it's a point location within the larger Great Falls postal area, enclosed by ZIP 59401.
The post office at 1 1st Ave N maintains 491 PO Boxes and handles 577 business delivery points. With 50 business establishments employing 417 people, this ZIP serves commercial needs rather than residential ones. The single street address (1 1st Ave N) with 179 unit designators indicates PO Box Street Addressing, where businesses can use the post office's physical address followed by their box number.
Great Falls has multiple ZIP codes. This one handles specialized postal services including PO Box rentals for businesses and individuals who prefer centralized mail pickup. Street delivery is available in the area through the standard Great Falls ZIPs.
Single address represents the post office facility with PO Box Street Addressing for business customers.
ZIP Code 59403 supports both business and residential activity. According to the Business Census (2024), there are 51 business establishments, employing about 418 people with an annual payroll of $23,944,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 1,035Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 51Source: CBP |
| 1st Quarter Payroll: | $5,408,000Source: CBP |
| Annual Payroll: | $23,944,000Source: CBP |
| # of Employees: | 418Source: CBP |
ZIP Code 59403 is located in Cascade County, Montana, within the Great Falls, MT Metropolitan Statistical Area (CBSA 24500) and Montana's 2nd Congressional District. This Metro area has a population of 84,601 people, about 0.00% of whom live in ZIP Code 59403. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Great Falls, MTSource: Census |
| CBSA Number: | 24500Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 84,601Source: Census |
| MSA: | Great Falls, MT MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 0 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 3032800Source: Census |
| Place Name: | Great Falls city; MontanaSource: Census |
We could not locate which school district 59403 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.