Boulder County ZIP Codes
Colorado, United States · 27 codes
Boulder County in Colorado has 27 ZIP codes, from 80020 to 80544, serving 27 places.
ZIP codes in Boulder
| ZIP Code | Places |
|---|---|
| 80020 | Broomfield |
| 80025 | Eldorado Springs |
| 80026 | Lafayette |
| 80027 | Louisville |
| 80038 | Broomfield |
| 80301 | Boulder |
| 80302 | Boulder |
| 80303 | Boulder |
| 80304 | Boulder |
| 80305 | Boulder |
| 80306 | Boulder |
| 80307 | Boulder |
| 80308 | Boulder |
| 80309 | Boulder |
| 80310 | Boulder |
| 80314 | Boulder |
| 80455 | Jamestown |
| 80466 | Nederland |
| 80471 | Pinecliffe |
| 80481 | Ward |
| 80501 | Longmont |
| 80502 | Longmont |
| 80503 | Longmont |
| 80510 | Allenspark |
| 80533 | Hygiene |
| 80540 | Lyons |
| 80544 | Niwot |
Frequently asked questions
What is the ZIP code of Boulder?
Boulder has 27 ZIP codes, from 80020 to 80544. The table lists the places each one serves.
How many places are listed in Boulder County?
27 places.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.