Spencer, SD population, income and ZIP codes

Spencer city is a very small community in South Dakota, with 126 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #280 of 485 ranked by population — larger than 42% of them. The median age here is 42.5 years against 39.1 nationally, a slightly older profile than the country as a whole. 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 Spencer city earn a median of $57,917 a year, 26.3% below the national figure of $78,538 and 12% below the $65,500 median for the 79 South Dakota cities we cover. 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 0% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Spencer city is valued at $137,500, 54.7% below the national figure and 29% below the $192,800 peer median, while median gross rent runs $425 a month, 69.8% below the national figure, or roughly $5,100 across a full year. A household on the local median income would put about 8.8% 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 2.4×, 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. 78% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

With 126 residents, a handful of survey responses moves every median on this page. Compare Spencer city against its county rather than against national figures.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. 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.