Island Lake, IL population, income and ZIP codes

Island Lake village is a mid-size town in Illinois, with 8,023 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #264 of 1,462 ranked by population — larger than 81% of them. The median age here is 39.5 years against 39.1 nationally, a slightly older profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in Island Lake village earn a median of $98,125 a year, 24.9% above the national figure of $78,538 and 32% above 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 6.5% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Island Lake village is valued at $241,900, 20.3% below the national figure and 35% above the $179,100 peer median, while median gross rent runs $1,855 a month, 31.9% above the national figure, or roughly $22,260 across a full year. A household on the local median income would put about 22.7% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 2.5×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 81.7% 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.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. 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.