ZIP Code 80109 — Castle Rock town, CO Demographics & Data

ZIP code 80109 covers Castle Rock, CO in Douglas County with a population of about 27,795.

At a glance, the area shows median age of 35.8 versus a U.S. median of about 38.9.

It sits in telephone area codes 303, 720, 983; U.S. House district CO-4; the DENVER media market.

Castle Rock, CO aligns with a tech / corporate-campus profile (high remote-work / education / income profile or known campus context). Broadband quality, remote-work share, and nearby employer campuses often matter as much as classic residential stats.

Median household income in ZIP 80109 is about $148,417 — about 97% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 3.6%; unemployment rate near 6.3%; 56.6% of adults with a bachelor’s degree or higher (about 22.9 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Professional services, Healthcare, and Retail trade; about 26.5% of workers reporting work-from-home (about 11.3 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 $648,900 — about 86% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $2,077 (about 79% above the U.S. median rent ($1,163)), and owner-occupancy near 79.3% (about 13.9 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 80109 in Castle Rock, CO, a household would need roughly $179,000 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 $4,168. That is about 21% above the local median household income ($148,417), 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 Castle Rock town, CO as Relatively Moderate (composite score 88.7), which is elevated versus much of the country. The strongest component scores on US5 are wildfire (98.4) and flood (86.9). 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 Castle Rock town, CO show little to no average snow and around 17.6 inches of annual precipitation.

IRS migration statistics show a net inflow of about 1,270 for ZIP 80109 (Castle Rock town, 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.