St. Augustine, IL population, income and ZIP codes

St. Augustine village is a very small community in Illinois, with 123 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #1315 of 1,462 ranked by population — larger than 10% of them. The median age here is 54.2 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 St. Augustine village earn a median of $49,375 a year, 37.1% below the national figure of $78,538 and 33% below the $74,244 median for the 698 Illinois cities we cover. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 17.1% of residents here, above the 12.4% national rate.

The typical owner-occupied home in St. Augustine village is valued at $52,700, 82.6% below the national figure and 71% below the $179,100 peer median, while median gross rent runs not published a month. 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. 87.3% 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.

A median age of 54.2 puts St. Augustine village well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages. With 123 residents, a handful of survey responses moves every median on this page. Compare St. Augustine village against its county rather than against national figures.

The Census withheld gross rent for St. Augustine 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.