Oswego, IL population, income and ZIP codes

Oswego village is a small city in Illinois, with 35,463 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #52 of 1,462 ranked by population — larger than 96% of them. The median age here is 39.7 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 Oswego village earn a median of $119,881 a year, 52.6% above the national figure of $78,538 and 61% 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 2.3% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Oswego village is valued at $319,000, 5.1% above the national figure and 78% above the $179,100 peer median, while median gross rent runs $1,823 a month, 29.7% above the national figure, or roughly $21,876 across a full year. A household on the local median income would put about 18.2% 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 2.7×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 87.7% 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. 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.

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.