Frontenac, MO population, income and ZIP codes

Frontenac city is a small town in Missouri, with 3,669 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #182 of 1,082 ranked by population — larger than 83% of them. The median age here is 45.8 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 Frontenac city earn a median of $225,813 a year, 187.5% above the national figure of $78,538 and 307% above the $55,543 median for the 374 Missouri cities we cover. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 2% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Frontenac city is valued at $1,004,500, 231.1% above the national figure and 559% above the $152,400 peer median, while median gross rent runs not published a month. The home-price-to-income ratio works out to 4.4×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 97.7% 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. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

The Census withheld gross rent for Frontenac city because the sample was too thin to publish at this geography. Those values were suppressed at the source, not lost in our dataset, and we do not model a replacement. Everything else on this page comes straight from the ACS 2019-2023 ACS 5-year tables.