ZIP code · Boulder · Colorado · United States
ZIP code 80304 — Boulder
ZIP code 80304 serves Boulder, Colorado.
- Postal code
- 80304Single source Value from one source, not cross-checked.
- City
- Boulder
- County
- Boulder FIPS 08013
- State
- Colorado
- Country
- United States
- Coordinates
- 40.0375, -105.2771 — precision precise (locality)
View on OpenStreetMap - Population
- 25,634 (ZCTA, ACS 5-year)
- Population density
- 2,840 / sq mi
- Land area
- 9 sq mi (23.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $121,534
- Per-capita income
- $83,292
- Median age
- 41.5
- Households
- 11,179
- Housing units
- 11,717
- Median home value
- $1,166,100
- Median gross rent
- $1,956 / month
- Congressional district
- CO-2 (119th Congress)
- USDA hardiness zone
- 6a (-10 to -5 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Denver (UTC−7 / UTC−6 DST)
Tools: compare 80304 with another ZIP · ZIPs within 25 miles · distance from 80304
Map of ZIP code 80304
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Dec (avg low 21°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 47 | 48 | 57 | 63 | 71 | 83 | 88 | 86 | 79 | 66 | 55 | 46 |
| Avg low °F | 22 | 22 | 29 | 35 | 43 | 51 | 57 | 56 | 48 | 37 | 28 | 21 |
| Precip in | 0.8 | 1.0 | 2.0 | 3.0 | 3.2 | 1.9 | 1.8 | 1.7 | 2.1 | 1.6 | 1.2 | 0.8 |
NOAA 1991–2020 climate normals from the nearest station: BOULDER (3.2 mi) · NOAA NCEI
Places in ZIP 80304
- 12 schools
- 2 hospitals & clinics
- 10 doctors & dentists
- 2 pharmacies
- 3 supermarkets
- 38 restaurants & cafés
- 3 bars & pubs
- 27 parks
- 35 playgrounds
- 8 gyms & sports centres
- 1 libraries
- 1 post offices
- 6 places of worship
- 4 banks
- 4 gas stations
- 4 EV charging stations
- 3 police & fire stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page