Old Agency, MT ZIP Codes
One ZIP code serves Old Agency, Montana: 59831. Together they are home to 544 residents in 183 households. That is more than the 129 people counted inside Old Agency Census-designated place, because these ZIP codes reach past its boundary.
Old Agency Census-designated place
| Measure | Census figure |
|---|---|
| Residents | 129 |
| Households | 21 |
| Median household income | $45,750 |
| Median home value | not published |
| Median age | 18.3 |
| Median rent | $550 |
All 1 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 544 |
| Households (sum of ZIP codes) | 183 |
| Median household income, range across ZIP codes | $46,406 (59831) to $46,406 (59831) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $46,406 |
| Homeowners | 71.6% |
| Households with kids under 18 | 25.7% |
| Moved in the past year | 12.4% |
| Carrier routes in EDDM2GO's route library | not loaded yet |
Every ZIP code in Old Agency
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 59831 | Dixon | 544 | 183 | $46,406 | $197,500 | 71.6% | 25.7% | 12.4% | — | — | 1% of its land |
A ZIP code is listed for Old Agency when at least 10% of its land lies inside the Old Agency Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Old Agency. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Old Agency.
Counties
- Sanders County — 10 ZIP codes
Price a mailing to Old Agency ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Old Agency, MT?
- 59831. A ZIP code is listed for Old Agency when at least 10% of its land lies inside the Old Agency Census-designated place, when it holds at least 10% of the place's land, or when its USPS mailing city is Old Agency.
- What is the population of Old Agency, MT?
- The Census Bureau counts 129 residents inside Old Agency Census-designated place (ACS 2020–2024). The 1 ZIP code that serve Old Agency hold 544 residents in all.
- What is the median household income in Old Agency, MT?
- $45,750 inside Old Agency Census-designated place, per the Census Bureau. Across its ZIP codes the medians run from $46,406 to $46,406.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.