Mound City, IL population, income and ZIP codes

Mound City city is a very small community in Illinois, with 756 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #791 of 1,462 ranked by population — larger than 45% of them. The median age here is 37.3 years against 39.1 nationally, a slightly younger 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 Mound City city earn a median of $39,808 a year, 49.3% below the national figure of $78,538 and 46% below the $74,244 median for the 698 Illinois 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 17.7% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Mound City city is valued at $43,900, 85.5% below the national figure and 75% below the $179,100 peer median, while median gross rent runs $783 a month, 44.3% below the national figure, or roughly $9,396 across a full year. A household on the local median income would put about 23.6% 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 1.1×, 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. 36.1% 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.

With 756 residents, a handful of survey responses moves every median on this page. Compare Mound City city 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.