Four Square Mile, CO population, income and ZIP codes

Four Square Mile CDP is a mid-size town in Colorado, with 21,788 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #36 of 482 ranked by population — larger than 92% of them. The median age here is 31.7 years against 39.1 nationally, a distinctly younger profile, typical of places with students, military posts or a fast-growing family population. 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 Four Square Mile CDP earn a median of $73,318 a year, 6.6% below the national figure of $78,538 and 15% below the $86,484 median for the 223 Colorado 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 15.2% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Four Square Mile CDP is valued at $448,200, 47.7% above the national figure and within a couple of points of the $453,600 peer median, while median gross rent runs $1,796 a month, 27.7% above the national figure, or roughly $21,552 across a full year. A household on the local median income would put about 29.4% 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 6.1×, 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. 24.7% of occupied homes are owner-occupied versus 65% nationally, a renter-majority market, so rent figures matter more here than the home-value line. 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 6.1× 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.

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.