Thornton, IA population, income and ZIP codes

Thornton city is a very small community in Iowa, with 534 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #454 of 1,026 ranked by population — larger than 55% of them. The median age here is 34.3 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 Thornton city earn a median of $66,979 a year, 14.7% below the national figure of $78,538 and within a couple of points of the $67,791 median for the 290 Iowa 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 6.6% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Thornton city is valued at $99,000, 67.4% below the national figure and 37% below the $156,300 peer median, while median gross rent runs $775 a month, 44.9% below the national figure, or roughly $9,300 across a full year. A household on the local median income would put about 13.9% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 1.5×, 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. 86.4% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. 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 534 residents, a handful of survey responses moves every median on this page. Compare Thornton city against its county rather than against national figures.

All values below were released by the Census for this exact geography, with no gap-filling on our side. 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.