ZIP code 80121

ZIP 80121 is a mid-size town in Arapahoe County, Colorado, with 17,929 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #128 of 528 ranked by population — larger than 75% of them. The median age here is 48.6 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. 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 ZIP 80121 earn a median of $136,287 a year, 73.5% above the national figure of $78,538. 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 4.3% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in ZIP 80121 is valued at $684,900, 125.7% above the national figure, while median gross rent runs $1,945 a month, 38.3% above the national figure, or roughly $23,340 across a full year. A household on the local median income would put about 17.1% 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 5×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 86.2% 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.

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.

ZIP 80121 is tabulated inside Arapahoe County, Colorado, one of 17 ZIP areas the Census publishes for that county and 528 across Colorado. This is a mid-sized suburban ZIP inside a county that is split across many delivery areas. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 80121 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 80121 reports a median household income of $136,287, 40% above the $97,167 county median, and 68% above the $80,917 typical CO ZIP. Owner-occupied homes are valued at a median of $684,900, 23% above the county figure and 60% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,945 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Colorado charges 2.9% statewide, and local governments overlapping 80121 may add county, city or special-district levies on top. We publish the state floor for this ZIP rather than guessing a combined figure, because ZIP boundaries and taxing-district boundaries were drawn for different purposes and do not line up.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 80121 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.