St. Johns CDP, AZ population, income and ZIP codes

St. Johns CDP is a very small community in Arizona, with 596 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #257 of 467 ranked by population — larger than 45% of them. The median age here is 28 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 St. Johns CDP earn a median of $51,583 a year, 34.3% below the national figure of $78,538 and 19% below the $63,545 median for the 206 Arizona cities we cover. 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 24.8% 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 St. Johns CDP is valued at $323,300, 6.6% above the national figure and 33% above the $242,700 peer median, while median gross rent runs not published a month. The home-price-to-income ratio works out to 6.3×, 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. 82.6% 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 6.3× 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 28 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.

The Census withheld gross rent for St. Johns CDP because the sample was too thin to publish at this geography. Those values were suppressed at the source, not lost in our dataset, and we do not model a replacement. Everything else on this page comes straight from the ACS 2019-2023 ACS 5-year tables.