ZIP Code 80305 — Boulder city, CO Demographics & Data

ZIP code 80305 covers Boulder, CO in Boulder County with a population of about 16,101.

At a glance, the area shows median age of 37.7 (near the U.S. median).

It sits in telephone area codes 303, 720, 983; U.S. House district CO-2; the DENVER media market.

Boulder, CO sits in a university / college context (near auguste escoffier school of culinary arts-boulder (0.6 mi)). Expect stronger interest in student housing, rentals, walkability, transit, and a younger adult age mix versus typical suburban ZIPs.

Median household income in ZIP 80305 is about $120,933 — about 61% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 12.6%; unemployment rate near 4.5%; 82.5% of adults with a bachelor’s degree or higher (about 48.8 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Professional services, Education, and Healthcare; about 40.1% of workers reporting work-from-home (about 24.9 points above the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $985,700 — about 183% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $2,074 (about 78% above the U.S. median rent ($1,163)), and owner-occupancy near 62.4% (about 3.0 points below the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 80305 in Boulder, CO, a household would need roughly $271,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $6,332. That is about 124% above the local median household income ($120,933), so the median earner would likely stretch or need a larger down payment. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for Boulder city, CO as Relatively Moderate (composite score 90.7), which is among the highest nationally. The strongest component scores on US5 are wildfire (97.9) and flood (92.2). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Boulder city, CO show little to no average snow and around 21.2 inches of annual precipitation.

IRS migration statistics show a net inflow of about 736 for ZIP 80305 (Boulder city, CO) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.