ZIP code 51451

ZIP 51451 is a very small community in Carroll County, Iowa, with 65 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #939 of 970 ranked by population — larger than 3% of them. The median age here is 57.9 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 ZIP 51451 earn a median of $36,250 a year, 53.8% below the national figure of $78,538. 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 15.4% of residents here, above the 12.4% national rate.

The typical owner-occupied home in ZIP 51451 is valued at $90,800, 70.1% below the national figure, while median gross rent runs $338 a month, 76% below the national figure, or roughly $4,056 across a full year. A household on the local median income would put about 11.2% 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 2.5×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 86% 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.

A median age of 57.9 puts ZIP 51451 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 65 residents, a handful of survey responses moves every median on this page. Compare ZIP 51451 against its county rather than against national figures.

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.

ZIP 51451 is tabulated inside Carroll 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 51451 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 51451 reports a median household income of $36,250, 48% below the $70,000 county median, and 49% below the $71,182 typical IA ZIP. Owner-occupied homes are valued at a median of $90,800, 42% below the county figure and 40% below the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $338 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 51451 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 51451 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.