ZIP code 63040

ZIP 63040 is a mid-size town in St. Louis County, Missouri, with 8,826 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #206 of 1,035 ranked by population — larger than 80% of them. The median age here is 42.3 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 ZIP 63040 earn a median of $130,139 a year, 65.7% above the national figure of $78,538. 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 2.7% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in ZIP 63040 is valued at $408,800, 34.7% above the national figure, while median gross rent runs $1,504 a month, 7% above the national figure, or roughly $18,048 across a full year. A household on the local median income would put about 13.9% 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 3.1×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 88.3% 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. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

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.

ZIP 63040 is tabulated inside St. Louis County, Missouri, one of 43 ZIP areas the Census publishes for that county and 1,035 across Missouri. Population sits in the small-town band, typically one main street plus the addresses that feed into it. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 63040 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 63040 reports a median household income of $130,139, 51% above the $86,196 county median, and 115% above the $60,651 typical MO ZIP. Owner-occupied homes are valued at a median of $408,800, 47% above the county figure and 152% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,504 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Missouri charges 4.225% statewide, and local governments overlapping 63040 may add county, city or special-district levies on top. We publish the state floor for this ZIP rather than guessing a combined figure, because ZIP boundaries and taxing-district boundaries were drawn for different purposes and do not line up.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 63040 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.