ZIP 80621

80621 is one of 35 ZIP codes that lie mostly in Weld County, CO.

Shaded by typical home value, it ranks 20 of the 28 with a value.

Mapped in and around 80621: 43 places to go — 12 arts & venues, 11 day trips, 10 dining.

5 school locations in 80621: 3 elementary, 1 middle, 1 high.

In alphabetical order: Fort Lupton High School, Fort Lupton Middle School, Leo William Butler Elementary School, Little Trappers Preschool, and more on the ZIP page. Locations only — no ratings are shown here.

In January 2000 the typical home in 80621 was worth $153,579.

Values peaked at $484,201 in July 2022. The latest reading is −4.6% from that peak.

As of August 2026: $461,953, −1.9% over twelve months.

Start with the typical home: $461,953. Put 20% down and borrow $369,562 at 7.40%, the 30-year fixed average as of October 8, 2026.

That is $2,559 a month in principal and interest.

The median household here earns $80,746 a year, $6,729 a month. So the payment takes 38.0% of income — rated “severe” (Lotvox ZIP bands: under 28% affordable · 28–36% stretched · 36%+ severe).

The line holds today's rate fixed and moves only the price: at that rate, the same share was 12.6% in 2000.

Take the typical home's price each month, borrow 80% at that month's actual 30-year average rate: in January 2000 (8.21%) the payment was $920.

In December 2020, with rates at 2.68%, it was $1,232.

By August 2026, at 6.67%, it was $2,377 — +93% since December 2020, while the home's value moved +21%.

Reported values rose +201% since January 2000.

General prices (CPI-U) rose +97% over the same span.

Divide one by the other: in August 2026 dollars, the 2000 home was worth $303,104. So the real change is +52%, not +201%.

80621: +201% since January 2000.

Weld County: +178% since January 2000.

Colorado: +199% since January 2000 — 80621 ran ahead of it by 2 points.

Owning the typical home costs about $3,021 a month once taxes and insurance (estimated at 1.2% of price a year) are added. Renting runs about $1,238 a month.

Price divided by a year's rent: 31.1. Lotvox reads under 15 as favoring buying and 20 or more as favoring renting.

Picture the Listings Flow Ladder as a basin: new listings pour in from the faucet, the homes for sale are the water, and closed sales run out the drain. Coming in — new listings: about 29 a month (Redfin, 3-month rolling data through August 2026).

On the shelf — homes for sale at the end of the period: 93.

Going out — closed sales: about 18 a month. The drain is drawn 55% narrower: the share of homes for sale that sell each month is 45% of its 2015–2019 level.

The ladder: homes for sale ÷ monthly sales = 5.3 months of supply — inside the 4–6 month balanced range. In the basin, that is the water level against the shaded balanced band.

The net reading: about 11 more homes came on than sold each month, so inventory is growing. The basin is filling.

Homes sold: about 18 a month in August 2026 (Redfin).

The 2015–2019 level for the same month was 14 — so sales ran at 129% of it, and below it in 2 of the last 24 months.

Across Weld County, builders pulled permits for 2,993 new homes in 2025.

Of those, 67% were in 1-unit buildings (the Census Bureau's category for detached and attached single homes).

This ZIP sits in Weld County. IRS tax returns for 2022-2023: among the ten counties sending the most households, 8,838 moved in. Among the ten receiving the most, 5,777 moved out.

Net across those counties: +3,061 households. Beside it, homes for sale in this ZIP: 93 in June 2026.

Most arrivals came from Larimer, CO (2,730 households); most departures went to Larimer, CO (2,021).

County assessor records list 3,086 properties with a market value here. Their average assessed market value is $416,783; the typical home value is $461,953.

The assessor average sits −9.8% from the market figure — an average against a typical value, so treat it as a check, not a verdict.

Of 3,262 homes with a recorded purchase date, 38% have had the same owner for 20 years or more, and 9% changed hands in the last five.

36% are owned from a different mailing address, 1% from out of state.