ZIP code 59831

ZIP 59831 is a very small community in Sanders County, Montana, with 588 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #170 of 369 ranked by population — larger than 54% of them. The median age here is 30.8 years against 39.1 nationally, a distinctly younger profile, typical of places with students, military posts or a fast-growing family population. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in ZIP 59831 earn a median of $43,594 a year, 44.5% below the national figure of $78,538. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 30.1% of residents here, well above the 12.4% national rate, which is the single clearest signal in this dataset that median income here is carried by a narrow band of households.

The typical owner-occupied home in ZIP 59831 is valued at $155,600, 48.7% below the national figure, while median gross rent runs $688 a month, 51.1% below the national figure, or roughly $8,256 across a full year. A household on the local median income would put about 18.9% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 3.6×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 68.2% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

With 588 residents, a handful of survey responses moves every median on this page. Compare ZIP 59831 against its county rather than against national figures.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

ZIP 59831 is tabulated inside Sanders County, Montana, one of 9 ZIP areas the Census publishes for that county and 369 across Montana. Fewer than 2,500 people are counted here, so the ZIP behaves like a village delivery route rather than a neighbourhood. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 59831 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 59831 reports a median household income of $43,594, 11% below the $48,840 county median, and 32% below the $64,375 typical MT ZIP. Owner-occupied homes are valued at a median of $155,600, 61% below the county figure and 42% below the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $688 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Montana charges 0% statewide, and local governments overlapping 59831 may add county, city or special-district levies on top. We publish the state floor for this ZIP rather than guessing a combined figure, because ZIP boundaries and taxing-district boundaries were drawn for different purposes and do not line up.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 59831 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.