Rock Island Arsenal, IL population, income and ZIP codes

Rock Island Arsenal CDP is a very small community in Illinois, with 372 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #1023 of 1,462 ranked by population — larger than 30% of them. The median age here is 43.1 years against 39.1 nationally, a slightly older 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 Rock Island Arsenal CDP earn a median of $53,472 a year, 31.9% below the national figure of $78,538 and 28% 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 0% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Rock Island Arsenal CDP is valued at not published, while median gross rent runs $1,408 a month, essentially level with the national figure, or roughly $16,896 across a full year. A household on the local median income would put about 31.6% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is a stretch on median earnings. 0% of occupied homes are owner-occupied versus 65% nationally, a renter-majority market, so rent figures matter more here than the home-value line. 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 372 residents, a handful of survey responses moves every median on this page. Compare Rock Island Arsenal CDP against its county rather than against national figures.

The Census withheld home value for Rock Island Arsenal CDP 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.