Plymouth, IL population, income and ZIP codes

Plymouth village is a very small community in Illinois, with 512 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #936 of 1,462 ranked by population — larger than 36% of them. The median age here is 45.6 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. 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 Plymouth village earn a median of $39,750 a year, 49.4% below the national figure of $78,538 and 46% below 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 29.5% of residents here, well above the 12.4% national rate, which is the single clearest signal in this dataset that median income here is carried by a narrow band of households.

The typical owner-occupied home in Plymouth village is valued at $55,500, 81.7% below the national figure and 69% below the $179,100 peer median, while median gross rent runs $796 a month, 43.4% below the national figure, or roughly $9,552 across a full year. A household on the local median income would put about 24% 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 1.4×, 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. 82.1% 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. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

With 512 residents, a handful of survey responses moves every median on this page. Compare Plymouth village against its county rather than against national figures.

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.