Oak Grove, IL population, income and ZIP codes

Oak Grove village is a very small community in Illinois, with 335 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #1053 of 1,462 ranked by population — larger than 27% of them. The median age here is 48.6 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. 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 Oak Grove village earn a median of $41,912 a year, 46.6% below the national figure of $78,538 and 44% below the $74,244 median for the 698 Illinois cities we cover. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 18.2% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Oak Grove village is valued at not published, while median gross rent runs $688 a month, 51.1% below the national figure, or roughly $8,256 across a full year. A household on the local median income would put about 19.7% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. 88.8% 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. 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 335 residents, a handful of survey responses moves every median on this page. Compare Oak Grove village against its county rather than against national figures.

The Census withheld home value for Oak Grove village because the sample was too thin to publish at this geography. Those values were suppressed at the source, not lost in our dataset, and we do not model a replacement. Everything else on this page comes straight from the ACS 2019-2023 ACS 5-year tables.