ZIP code 50431

ZIP 50431 is a very small community in Franklin County, Iowa, with 251 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #818 of 970 ranked by population — larger than 15% of them. The median age here is 29.5 years against 39.1 nationally, a distinctly younger profile, typical of places with students, military posts or a fast-growing family population. 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 ZIP 50431 earn a median of $58,125 a year, 26% below 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 15.5% of residents here, above the 12.4% national rate.

The typical owner-occupied home in ZIP 50431 is valued at $82,000, 73% below the national figure, while median gross rent runs $644 a month, 54.2% below the national figure, or roughly $7,728 across a full year. A household on the local median income would put about 13.3% 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 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. 68.4% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. 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.

A median age of 29.5 means a large student or early-career population; income medians in places like this understate household resources, since many residents are supported from outside the address. With 251 residents, a handful of survey responses moves every median on this page. Compare ZIP 50431 against its county rather than against national figures.

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 50431 is tabulated inside Franklin County, Iowa, one of 11 ZIP areas the Census publishes for that county and 970 across Iowa. This is one of the smallest tabulated ZIP areas in the state, the kind of rural route where a single subdivision or farm cluster accounts for most addresses. 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 50431 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 50431 reports a median household income of $58,125, 12% below the $66,289 county median, and 18% below the $71,182 typical IA ZIP. Owner-occupied homes are valued at a median of $82,000, close to the county figure and 46% below the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $644 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Iowa charges 6% statewide, and local governments overlapping 50431 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 50431 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.