| City: | Boulder, Colorado |
| County: | Boulder County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 8:59:27 PM |
| Population: | No Population Data |
| Area Codes: | 303 / 983 |
| Classification: | PO Box |
| Coordinates: | 40.0153, -105.2702 |
| Quick Link: |
The 542 businesses using 80306 addresses do so for mail collection convenience, not because they're physically located there. Boulder's actual residential and commercial districts operate under different ZIP codes. The 80306 facility sits within the broader 80302 service area. This arrangement is common in cities where central post offices maintain separate administrative ZIP codes for their box operations while the surrounding neighborhoods use standard delivery ZIPs.
The single street entry represents the post office's physical address rather than residential delivery routes. The 194 records indicate internal mail processing organization for the PO Box facility.
ZIP Code 80306 supports both business and residential activity. According to the Business Census (2024), there are 25 business establishments, employing about 142 people with an annual payroll of $13,058,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 2,083Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 25Source: CBP |
| 1st Quarter Payroll: | $3,076,000Source: CBP |
| Annual Payroll: | $13,058,000Source: CBP |
| # of Employees: | 142Source: CBP |
ZIP Code 80306 is located in Boulder County, Colorado, within the Boulder, CO Metropolitan Statistical Area (CBSA 14500) and Colorado's 2nd Congressional District. This Metro area has a population of 328,317 people, about 0.00% of whom live in ZIP Code 80306. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Boulder, COSource: Census |
| CBSA Number: | 14500Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 328,317Source: Census |
| MSA: | Denver-Boulder-Greeley, CO CMSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 7535.34 sq miSource: Census |
| PMSA: | Boulder-Longmont, CO PMSASource: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0807850Source: Census |
| Place Name: | Boulder city; ColoradoSource: Census |
We could not locate which school district 80306 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.