King Arthur Park, MT population, income and ZIP codes

King Arthur Park CDP is a small town in Montana, with 2,343 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #46 of 497 ranked by population — larger than 90% of them. The median age here is 34.6 years against 39.1 nationally, a slightly younger 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 King Arthur Park CDP earn a median of $107,341 a year, 36.7% above the national figure of $78,538 and 70% above the $62,992 median for the 94 Montana 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 5.4% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in King Arthur Park CDP is valued at $333,500, 9.9% above the national figure and 33% above the $250,900 peer median, while median gross rent runs $2,201 a month, 56.5% above the national figure, or roughly $26,412 across a full year. A household on the local median income would put about 24.6% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 3.1×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 71.3% 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.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. 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.