Madison ZIP codes — Madison County, Illinois

Madison County is a mid-size city in Illinois, with 264,631 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates. The median age here is 40.2 years against 39.1 nationally, a slightly older profile than the country as a whole. At this size the Census also publishes one-year estimates; the five-year values used here are steadier and let you compare against smaller neighbours on the same basis.

Households in Madison County earn a median of $74,800 a year, 4.8% below the national figure of $78,538. 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 11.3% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Madison County is valued at $167,900, 44.7% below the national figure, while median gross rent runs $969 a month, 31.1% below the national figure, or roughly $11,628 across a full year. A household on the local median income would put about 15.5% 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 2.2×, 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. 73.6% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. 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.