Castle Pines, CO population, income and ZIP codes

Castle Pines city is a mid-size town in Colorado, with 12,573 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #58 of 482 ranked by population — larger than 88% of them. The median age here is 43.5 years against 39.1 nationally, a slightly older profile than the country as a whole. 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 Castle Pines city earn a median of $189,918 a year, 141.8% above the national figure of $78,538 and 120% above the $86,484 median for the 223 Colorado 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 4.7% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Castle Pines city is valued at $827,900, 172.9% above the national figure and 83% above the $453,600 peer median, while median gross rent runs $2,128 a month, 51.4% above the national figure, or roughly $25,536 across a full year. A household on the local median income would put about 13.4% 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 4.4×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 84.1% 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. 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.

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.