ZIP code 57585

ZIP 57585 is a very small community in Mellette County, South Dakota, with 105 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #346 of 375 ranked by population — larger than 7% of them. The median age here is 51.2 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. 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 57585 earn a median of $44,688 a year, 43.1% below the national figure of $78,538. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 21% 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 57585 is valued at $103,800, 65.8% below the national figure, while median gross rent runs $692 a month, 50.8% below the national figure, or roughly $8,304 across a full year. A household on the local median income would put about 18.6% 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 2.3×, against roughly 3.9× nationally, so purchase prices are unusually low against local pay, the pattern in places where supply is plentiful and wage growth has been flat. 54.2% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

A median age of 51.2 puts ZIP 57585 well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages. With 105 residents, a handful of survey responses moves every median on this page. Compare ZIP 57585 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 57585 is tabulated inside Mellette County, South Dakota, one of 4 ZIP areas the Census publishes for that county and 375 across South Dakota. This is one of the smallest tabulated ZIP areas in the state, the kind of rural route where a single subdivision or farm cluster accounts for most addresses. 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 57585 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 57585 reports a median household income of $44,688, 12% below the $50,521 county median, and 38% below the $71,607 typical SD ZIP. Owner-occupied homes are valued at a median of $103,800, 77% above the county figure and 36% below the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $692 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

South Dakota charges 4.2% statewide, and local governments overlapping 57585 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 57585 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.