Boulder, Colorado ZIP Codes
- ZIP records
6 - Sum of listed ZIP population estimates
128,938 - Counties represented
1 - Population range
7,692–29,569 per ZIP
Population sum includes positive estimates in these ZIP records; it is not an official city population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | County | Population estimate |
|---|---|---|---|---|
| 1 | 80302 | Boulder | Boulder | 29,569 |
| 2 | 80304 | Boulder | Boulder | 25,383 |
| 3 | 80301 | Boulder | Boulder | 25,007 |
| 4 | 80303 | Boulder | Boulder | 24,996 |
| 5 | 80305 | Boulder | Boulder | 16,291 |
| 6 | 80310 | Boulder | Boulder | 7,692 |
Counties represented
All ZIP Codes in Boulder
- ZIP 80301 — Boulder County
- ZIP 80302 — Boulder County
- ZIP 80303 — Boulder County
- ZIP 80304 — Boulder County
- ZIP 80305 — Boulder County
- ZIP 80310 — Boulder County
Browse all ZIP data for Colorado
Methodology: ZIP records are grouped by the source file's primary city and state fields. Population ranges and sums use positive ZIP-level estimates; sums should not be read as official city totals. County links use each record's listed county assignment.