St. Marie, MT ZIP Codes
2 ZIP codes serve St. Marie, Montana: 59230 and 59231. Together they are home to 4,912 residents in 2,016 households. That is more than the 306 people counted inside St. Marie Census-designated place, because these ZIP codes reach past its boundary.
St. Marie Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 306 |
| Households | 92 |
| Median household income | $38,971 |
| Median home value | $18,800 |
| Median age | 37.9 |
| Median rent | not published |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 4,912 |
| Households (sum of ZIP codes) | 2,016 |
| Median household income, range across ZIP codes | $85,000 (59230) to $85,000 (59230) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $85,000 |
| Homeowners | 77.7% |
| Households with kids under 18 | 26.3% |
| Moved in the past year | 7.0% |
| Carrier routes in EDDM2GO's route library | 6 routes, 1,859 homes (1 of 2 ZIP codes) |
Every ZIP code in St. Marie
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 59230 | Glasgow | 4,606 | 1,924 | $85,000 | $241,000 | 77.2% | 27.0% | 7.3% | 6 | 2,061 | 1% of its land |
| 59231 | Saint Marie | 306 | 92 | $38,971 | $18,800 | 89.1% | 10.9% | 2.6% | — | — | 100% of its land |
A ZIP code is listed for St. Marie when at least 10% of its land lies inside the St. Marie Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is St. Marie. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside St. Marie.
Counties
- Valley County — 11 ZIP codes
Price a mailing to St. Marie ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in St. Marie, MT?
- 59230 and 59231. A ZIP code is listed for St.
- What is the population of St. Marie, MT?
- The Census Bureau counts 306 residents inside St. Marie Census-designated place (ACS 2020–2024). The 2 ZIP codes that serve St. Marie hold 4,912 residents in all.
- What is the median household income in St. Marie, MT?
- $38,971 inside St. Marie Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $85,000 to $85,000.
- How many carrier routes and mailboxes are in St. Marie, MT?
- For the 1 of 2 ZIP codes in EDDM2GO's stored route library: 6 carrier routes reaching 1,859 residential and 202 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.