Rock Valley, IA population, income and ZIP codes

Rock Valley city is a small town in Iowa, with 4,061 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #102 of 1,026 ranked by population — larger than 90% of them. The median age here is 41 years against 39.1 nationally, a slightly older profile than the country as a whole. 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 Rock Valley city earn a median of $67,012 a year, 14.7% below the national figure of $78,538 and within a couple of points of 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 6.4% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Rock Valley city is valued at $225,800, 25.6% below the national figure and 44% above the $156,300 peer median, while median gross rent runs $1,070 a month, 23.9% below the national figure, or roughly $12,840 across a full year. A household on the local median income would put about 19.2% 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 3.4×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 62.6% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. 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.