Millbrook, IL population, income and ZIP codes

Millbrook village is a very small community in Illinois, with 298 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #1094 of 1,462 ranked by population — larger than 25% of them. The median age here is 38.9 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 Millbrook village earn a median of $128,750 a year, 63.9% above the national figure of $78,538 and 73% above 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 6.7% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Millbrook village is valued at $350,000, 15.4% above the national figure and 95% above the $179,100 peer median, while median gross rent runs $1,100 a month, 21.8% below the national figure, or roughly $13,200 across a full year. A household on the local median income would put about 10.3% 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 2.7×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 94.1% 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. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

With 298 residents, a handful of survey responses moves every median on this page. Compare Millbrook village 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.