Old Jamestown, MO population, income and ZIP codes

Old Jamestown CDP is a mid-size town in Missouri, with 21,121 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #36 of 1,082 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 Old Jamestown CDP earn a median of $107,250 a year, 36.6% above the national figure of $78,538 and 93% above the $55,543 median for the 374 Missouri cities we cover. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 6.1% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Old Jamestown CDP is valued at $230,100, 24.2% below the national figure and 51% above the $152,400 peer median, while median gross rent runs $1,706 a month, 21.3% above the national figure, or roughly $20,472 across a full year. A household on the local median income would put about 19.1% 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. 89.3% 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.

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.