St. Joseph, IA population, income and ZIP codes

St. Joseph CDP is a very small community in Iowa, with 78 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #893 of 1,026 ranked by population — larger than 12% of them. The median age here is 73.4 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 St. Joseph CDP earn a median of $45,347 a year, 42.3% below the national figure of $78,538 and 33% below the $67,791 median for the 290 Iowa cities we cover. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 21.8% 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 St. Joseph CDP is valued at not published, while median gross rent runs not published a month. 72.1% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

A median age of 73.4 puts St. Joseph CDP well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages. With 78 residents, a handful of survey responses moves every median on this page. Compare St. Joseph CDP against its county rather than against national figures.

The Census withheld home value, gross rent for St. Joseph CDP 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.