ZIP code 57661

ZIP 57661 is a very small community in Dewey County, South Dakota, with 152 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #323 of 375 ranked by population — larger than 13% of them. The median age here is 29.8 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 57661 earn a median of $56,250 a year, 28.4% below the national figure of $78,538. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 40.1% 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 57661 is valued at not published, while median gross rent runs $603 a month, 57.1% below the national figure, or roughly $7,236 across a full year. A household on the local median income would put about 12.9% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. 35.7% of occupied homes are owner-occupied versus 65% nationally, a renter-majority market, so rent figures matter more here than the home-value line. 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.

A median age of 29.8 means a large student or early-career population; income medians in places like this understate household resources, since many residents are supported from outside the address. With 152 residents, a handful of survey responses moves every median on this page. Compare ZIP 57661 against its county rather than against national figures.

The Census withheld home value for ZIP 57661 because the sample was too thin to publish at this geography. Those values were suppressed at the source, not lost in our dataset, and we do not model a replacement. Everything else on this page comes straight from the ACS 2019-2023 ACS 5-year tables.

ZIP 57661 is tabulated inside Dewey County, South Dakota, one of 7 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 57661 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 57661 reports a median household income of $56,250, 11% below the $63,396 county median, and 21% below the $71,607 typical SD ZIP. Owner-occupied homes are valued at a median of not published. Rent is reported gross — the contract amount plus tenant-paid utilities — at $603 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 57661 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 57661 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.