Williamson, AZ population, income and ZIP codes

Williamson CDP is a mid-size town in Arizona, with 6,112 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #86 of 467 ranked by population — larger than 81% of them. The median age here is 65.9 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in Williamson CDP earn a median of $89,083 a year, 13.4% above the national figure of $78,538 and 40% above 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 3.6% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Williamson CDP is valued at $703,000, 131.7% above the national figure and 190% above the $242,700 peer median, while median gross rent runs $919 a month, 34.6% below the national figure, or roughly $11,028 across a full year. A household on the local median income would put about 12.4% 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 7.9×, against roughly 3.9× nationally, so buying is out of reach on local earnings alone and the ownership market leans on outside income, equity or dual high earners. 94.7% 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. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

Home values sit at 7.9× median household income, far past the 3.9× national mark, so ownership costs here are set by something other than local wages — second homes, retirees with equity, or commuters earning elsewhere. A median age of 65.9 puts Williamson 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.

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.