Boulder ZIP codes, Colorado
Boulder, CO has 11 ZIP codes, from 80301 to 80314, and area codes 720, 303 and 983. The largest are 80301, 80304 and 80303.
- USPS city name
- 11 ZIP codes
- Overlapping the city
- 1 more
- Population
- 106,433
- County
- Boulder County
- State
- Colorado
NANPA lists no telephone rate centre for Boulder itself, so these are the area codes of the nearest one, Longmont (8.5 miles). A town on an area-code boundary can differ from its neighbour.
Mail addressed to Boulder uses the ZIP codes above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.
Boulder in numbers
About 106,433 people live in Boulder, in 44,432 households, the 12th-largest of Colorado's 471 census places. The median household income is $87,493 a year, 8% below the Colorado median of $95,470 (US: $80,734). The median owner-occupied home is valued at $1,039,500 (93% above the Colorado median), and median gross rent is $2,018 a month. The median age is 28.8; 76.8% of adults 25 and over hold a bachelor's degree or higher (45.7% across Colorado); the average commute takes 18 minutes.
| Population | 106,433 |
|---|---|
| Households | 44,432 |
| Median age | 28.8 |
| Median household income | $87,493 |
| Median home value | $1,039,500 |
| Median gross rent | $2,018 |
| Bachelor's degree or higher | 76.8% |
| Mean commute | 18.1 min |
| Population density | 3,960 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Boulder city. Survey estimates carry margins of error, wider for small places. Sources and methods.
ZIP codes addressed as Boulder
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
80301 | Boulder , CO | Standard | 25,007 | $95,207 | $793,200 |
80304 | Boulder , CO | Standard | 25,383 | $126,558 | $1,210,200 |
80303 | Boulder , CO | Standard | 24,996 | $78,555 | $961,900 |
80302 | Boulder , CO | Standard | 29,569 | $61,698 | $1,190,800 |
80305 | Boulder , CO | Standard | 16,291 | $126,107 | $1,032,900 |
80306 | Boulder , CO | No street area | — | — | — |
80307 | Boulder , CO | No street area | — | — | — |
80308 | Boulder , CO | No street area | — | — | — |
80309 | Boulder , CO | No street area | — | — | — |
80310 | Boulder , CO | Standard | 7,692 | — | — |
80314 | Boulder , CO | No street area | — | — | — |
Other ZIP codes overlapping Boulder
These ZIP codes cover part of Boulder but are addressed as somewhere else.
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
80503 | Longmont , CO | Standard | 35,846 | $113,620 | $755,500 |
Map of Boulder ZIP codes
The ZIP codes of Boulder, CO, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Towns near Boulder
The nearest larger towns are Westminster (115,484 people, 14 mi), Arvada (122,634 people, 14 mi) and Thornton (144,187 people, 18 mi).
| Town | Population | Distance |
|---|---|---|
| Gunbarrel | 10,051 | 5.0 mi |
| Louisville | 20,786 | 6.9 mi |
| Niwot | 3,447 | 7.0 mi |
| Superior | 13,305 | 8.1 mi |
| Lafayette | 30,602 | 8.3 mi |
| Erie | 33,808 | 11.3 mi |
| Broomfield | 76,304 | 11.7 mi |
| Longmont | 99,406 | 12.7 mi |
| Westminster | 115,484 | 14.2 mi |
| Arvada | 122,634 | 14.2 mi |
| Frederick | 16,651 | 15.7 mi |
| Shaw Heights | 5,565 | 16.1 mi |
| Northglenn | 38,014 | 16.2 mi |
| Dacono | 6,530 | 16.3 mi |
More nearby: every ZIP code in Boulder County · Colorado ZIP codes
Cite this page
zipcodes.pro. “Boulder, CO ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/co/boulder
Underlying data is public domain or openly licensed — sources, vintages and licences.