Boulder, CO ZIP Codes
6 ZIP codes serve Boulder, Colorado: 80302, 80304, 80301, 80303, 80305 and 80310. Together they are home to 128,938 residents in 54,915 households. Median household income ranges from $61,698 in 80302 to $126,558 in 80304.
Boulder city limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 106,433 |
| Households | 44,432 |
| Median household income | $87,493 |
| Median home value | $1,039,500 |
| Median age | 28.8 |
| Median rent | $2,018 |
All 6 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 128,938 |
| Households (sum of ZIP codes) | 54,915 |
| Median household income, range across ZIP codes | $61,698 (80302) to $126,558 (80304) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $94,462 |
| Homeowners | 52.7% |
| Households with kids under 18 | 17.5% |
| Moved in the past year | 30.0% |
| Carrier routes in EDDM2GO's route library | 114 routes, 58,148 homes (5 of 6 ZIP codes) |
Top facts
- Highest median household income in Boulder: 80304 ($126,558)
- Most residents: 80302 (29,569 people)
- Highest homeownership: 80304 (70.0% own their home)
- Most households with kids: 80304 (25.3% of households)
- Most new movers: 80310 (70.2% moved in last year)
- Youngest median age: 80310 (19.3 years)
- Highest median home value: 80304 ($1,210,200)
Every ZIP code in Boulder
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 80302 | Boulder | 29,569 | 12,425 | $61,698 | $1,190,800 | 38.9% | 11.6% | 42.7% | 29 | 13,738 | 5% of its land; mailing city |
| 80304 | Boulder | 25,383 | 11,358 | $126,558 | $1,210,200 | 70.0% | 25.3% | 15.2% | 24 | 12,710 | 64% of its land; mailing city |
| 80301 | Boulder | 25,007 | 12,371 | $95,207 | $793,200 | 54.9% | 16.8% | 21.2% | 25 | 15,961 | 23% of its land; mailing city |
| 80303 | Boulder | 24,996 | 11,783 | $78,555 | $961,900 | 43.9% | 13.2% | 32.1% | 20 | 13,291 | 18% of its land; mailing city |
| 80305 | Boulder | 16,291 | 6,976 | $126,107 | $1,032,900 | 60.2% | 24.0% | 21.1% | 16 | 7,488 | 68% of its land; mailing city |
| 80310 | Boulder | 7,692 | 2 | — | — | 0.0% | 0.0% | 70.2% | — | — | 100% of its land; mailing city |
A ZIP code is listed for Boulder when at least 10% of its land lies inside Boulder city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Boulder. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Boulder.
Counties
- Boulder County — 21 ZIP codes
Nearby cities sharing these ZIP codes
- Gunbarrel — 2 ZIP codes
Rankings
- Richest ZIP codes in Boulder — 5 ZIP codes ranked
- ZIP codes with the highest home values in Boulder — 5 ZIP codes ranked
- ZIP codes with the highest homeownership in Boulder — 6 ZIP codes ranked
- ZIP codes with the most families with kids in Boulder — 6 ZIP codes ranked
- ZIP codes with the most new movers in Boulder — 6 ZIP codes ranked
- Youngest ZIP codes in Boulder — 6 ZIP codes ranked
- Oldest ZIP codes in Boulder — 6 ZIP codes ranked
- Fastest-growing ZIP codes in Boulder — 6 ZIP codes ranked
Price a mailing to Boulder ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Boulder, CO?
- 80302, 80304, 80301, 80303, 80305 and 80310. A ZIP code is listed for Boulder when at least 10% of its land lies inside Boulder city limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Boulder.
- What is the population of Boulder, CO?
- The Census Bureau counts 106,433 residents inside Boulder city limits (ACS 2020–2024). The 6 ZIP codes that serve Boulder hold 128,938 residents in all.
- What is the median household income in Boulder, CO?
- $87,493 inside Boulder city limits, per the Census Bureau. Across its ZIP codes the medians run from $61,698 to $126,558.
- Which Boulder ZIP code has the highest median household income?
- 80304, at $126,558, among ZIP codes with at least 1,000 residents. See the full ranking of Boulder ZIP codes by income.
- How many carrier routes and mailboxes are in Boulder, CO?
- For the 5 of 6 ZIP codes in EDDM2GO's stored route library: 114 carrier routes reaching 58,148 residential and 5,029 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.