Boulder, CO ZIP codes
3 ZIP codes lie mostly inside Boulder and 3 more cross into it. For each one: residents, median age, household income, home value, rent and homeownership, so you can see how different parts of the city compare.
ZIP codes mostly in Boulder
| ZIP | Share in city | Residents | Median age | Household income | Home value | Rent | Homeowners |
|---|---|---|---|---|---|---|---|
| 80304 | 64% | 25,383 | 42.8 | $126,558 | $1,210,200 | $2,075 | 70% |
| 80305 | 68% | 16,291 | 36.7 | $126,107 | $1,032,900 | $2,311 | 60% |
| 80310 | 100% | 7,692 | 19.3 | n/a | n/a | n/a | 0% |
ZIP codes partly in Boulder
| ZIP | Share in city | Residents | Median age | Household income | Home value | Rent | Homeowners |
|---|---|---|---|---|---|---|---|
| 80301 | 23% | 25,007 | 36.9 | $95,207 | $793,200 | $2,074 | 55% |
| 80302 | 5% | 29,569 | 24.9 | $61,698 | $1,190,800 | $1,921 | 39% |
| 80303 | 18% | 24,996 | 29.3 | $78,555 | $961,900 | $1,910 | 44% |
"Share in city" is the part of each ZIP code's land area inside Boulder city limits. Figures describe the whole ZIP code. Sources: Census Bureau 2020 ZIP Code Tabulation Areas (which closely follow USPS ZIP codes) and ACS 2020-2024 5-year estimates. Small ZIP codes have wide margins of error; "n/a" means the Census Bureau did not publish a value. Click a column to sort.
Frequently asked questions
How many ZIP codes are in Boulder?
3 ZIP codes lie mostly inside Boulder, and 3 more are partly in the city, by the Census Bureau's 2020 ZIP Code Tabulation Areas. PO box and single-building ZIP codes have no residents and are not listed.
Which Boulder ZIP code has the highest income?
80304 has the highest median household income, $126,558, and 80305 the lowest, $126,107 (ACS 2020-2024, ZIP codes with 1,000+ residents).
Where is rent cheapest in Boulder?
By ZIP code, median gross rent is lowest in 80304 ($2,075 a month) and highest in 80305 ($2,311).
Compare the whole city with others on the Boulder profile, or see Boulder population by year.