Round Rock, AZ population, income and ZIP codes

Round Rock CDP is a very small community in Arizona, with 543 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #268 of 467 ranked by population — larger than 42% of them. The median age here is 25.9 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 Round Rock CDP earn a median of $43,571 a year, 44.5% below the national figure of $78,538 and 31% below the $63,545 median for the 206 Arizona cities we cover. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 39% 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 Round Rock CDP is valued at $58,100, 80.9% below the national figure and 76% below the $242,700 peer median, while median gross rent runs $625 a month, 55.5% below the national figure, or roughly $7,500 across a full year. A household on the local median income would put about 17.2% 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 1.3×, 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. 81.3% 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.

A median age of 25.9 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 543 residents, a handful of survey responses moves every median on this page. Compare Round Rock CDP 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.