Spring Bay, IL population, income and ZIP codes

Spring Bay village is a very small community in Illinois, with 519 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #932 of 1,462 ranked by population — larger than 36% of them. The median age here is 42.9 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 Spring Bay village earn a median of $61,111 a year, 22.2% below the national figure of $78,538 and 18% below the $74,244 median for the 698 Illinois cities we cover. 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 17% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Spring Bay village is valued at $134,900, 55.5% below the national figure and 25% below the $179,100 peer median, while median gross rent runs $1,083 a month, 23% below the national figure, or roughly $12,996 across a full year. A household on the local median income would put about 21.3% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 2.2×, 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. 64.9% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. 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 519 residents, a handful of survey responses moves every median on this page. Compare Spring Bay village 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.