St. Mary's, AK population, income and ZIP codes

St. Mary's city is a very small community in Alaska, with 788 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #90 of 355 ranked by population — larger than 74% of them. The median age here is 26.2 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. Mary's city earn a median of $45,000 a year, 42.7% below the national figure of $78,538 and 45% below the $81,250 median for the 73 Alaska 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 26.4% 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. Mary's city is valued at $103,400, 65.9% below the national figure and 66% below the $305,100 peer median, while median gross rent runs $1,500 a month, 6.7% above the national figure, or roughly $18,000 across a full year. A household on the local median income would put about 40% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is a stretch on median earnings. The home-price-to-income ratio works out to 2.3×, 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. 68.4% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. 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.

St. Mary's city is the unusual combination of expensive to rent and cheap to buy: rent takes 40% of median income while homes cost only 2.3× it. Where that pattern shows up, the gap is normally down to down-payment and credit barriers rather than price. A median age of 26.2 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.

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.