ZIP code 80631

ZIP 80631 is a small city in Weld County, Colorado, with 53,920 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #11 of 528 ranked by population — larger than 98% of them. The median age here is 28.9 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 ZIP 80631 earn a median of $52,470 a year, 33.2% below 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 22.4% 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 ZIP 80631 is valued at $300,400, 1% below the national figure, while median gross rent runs $1,209 a month, 14% below the national figure, or roughly $14,508 across a full year. A household on the local median income would put about 27.7% 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 5.7×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 46.6% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. 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.

A median age of 28.9 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.

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 80631 is tabulated inside Weld County, Colorado, one of 35 ZIP areas the Census publishes for that county and 528 across Colorado. This is a dense urban ZIP, where a single postal boundary can hold more residents than an entire rural county. 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 80631 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 80631 reports a median household income of $52,470, 40% below the $86,938 county median, and 35% below the $80,917 typical CO ZIP. Owner-occupied homes are valued at a median of $300,400, 30% below the county figure and 30% below the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,209 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 80631 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 80631 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.