Fairview Heights, IL population, income and ZIP codes

Fairview Heights city is a mid-size town in Illinois, with 16,255 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #156 of 1,462 ranked by population — larger than 89% of them. The median age here is 41.6 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 Fairview Heights city earn a median of $77,960 a year, essentially level with the national figure of $78,538 and 5% 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 9.1% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Fairview Heights city is valued at $166,800, 45% below the national figure and 7% below the $179,100 peer median, while median gross rent runs $1,177 a month, 16.3% below the national figure, or roughly $14,124 across a full year. A household on the local median income would put about 18.1% 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 2.1×, 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. 66.3% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

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.