ZIP Code 80308 in Boulder, CO

Data Last Updated: January 1, 2026
City:Boulder, Colorado
County:Boulder County
Timezone:Mountain (GMT -07:00)
Local Time:8:59:36 PM
Population:No Population Data
Area Codes:303 / 983
Classification:PO Box
Coordinates:40.0153, -105.2702
Quick Link:
https://www.zip-codes.com/zip-code/80308/zip-code-80308.asp

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80308 Boulder, CO - A PO Box Facility ZIP

ZIP Code 80308, Boulder

Small Town Unique ZIP No Census Data
LocationBoulder County, CO
Area0 sq mi Single Point
Delivery Points1,308 (581 businesses)
PO Boxes727
ZIP CreatedBefore Oct 2004
Enclosed InZIP Code 80301
Key Facts
  • This ZIP exists as a point location within ZIP 80301 in Boulder's Gunbarrel area, with no geographic territory of its own.
  • The post office maintains 727 PO Boxes and serves 581 businesses at this location.
  • All street delivery records point to a single address on 55th Street, indicating a postal facility rather than a neighborhood.
  • Boulder has multiple standard ZIP codes with street delivery, so 80308 box holders choose PO Box service rather than needing it.
  • The UNIT designators on 55th Street are likely PO Box Street Addressing, which lets box holders use a street-style address format.

Overview

ZIP code 80308 is a PO Box-only designation within Boulder, Colorado. It doesn't have its own geographic territory. Instead, it exists as a point location enclosed by ZIP 80301 in the Gunbarrel area of Boulder County. The post office here maintains 727 PO Boxes and serves 581 businesses.

Mail Delivery Options

Because Boulder has multiple standard delivery ZIP codes (80301, 80302, 80303, 80304), residents and businesses can choose between street delivery through those ZIPs or PO Box service through 80308. This isn't a PO Box Only Zone, so local mail recipients have alternatives.

The 55th Street Address

All 183 street-type delivery records in 80308 trace to a single address: 55th Street. This confirms the ZIP serves a specific postal facility rather than a neighborhood. The UNIT designators on 55th Street likely correspond to individual PO Box units addressable in street format through PO Box Street Addressing.

Nearby Areas

Nearby neighborhoods include Gunbarrel (0.2 miles), Waterstone (0.3 miles), Orange Orchard (1.0 miles), and Palo Park (1.0 miles).

Street Name Patterns

Single Facility Address

Only one street address exists in this ZIP. It's the post office location where all 727 PO Boxes are housed.

Nearby Areas

Gunbarrel Gunbarrel Waterstone Orange Orchard Palo Park

Business & Employment Statistics


ZIP Code 80308 supports both business and residential activity. According to the Business Census (2024), there are 19 business establishments, employing about 178 people with an annual payroll of $7,651,000.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:1,260Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:19Source: CBP
1st Quarter Payroll:$1,752,000Source: CBP
Annual Payroll:$7,651,000Source: CBP
# of Employees:178Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 80308 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 80308. 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

Adjacent & Nearby ZIP Codes


80309 | | 80307

Schools in ZIP Code 80308


We could not locate which school district 80308 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.

Boulder High School 1604 Arapahoe Avenue
Boulder, CO 80302
District: Boulder Valley School District RE-2Nearby
Whittier Elementary School 2008 Pine Street
Boulder, CO 80302
District: Boulder Valley School District RE-2Nearby
University Hill Elementary School 956 16th Street
Boulder, CO 80302
District: Boulder Valley School District RE-2Nearby
Casey Middle School 1301 High Street
Boulder, CO 80304
District: Boulder Valley School District RE-2Nearby
Mapleton Early Childhood Center 840 Mapleton Avenue
Boulder, CO 80304
District: Boulder Valley School District RE-2Nearby
Sacred Heart Of Jesus School 1317 Mapleton Ave
Boulder, CO 80304
District: Private SchoolNearby
September School 96 Arapahoe Ave
Boulder, CO 80302
District: Private SchoolNearby
Jarrow Montessori School 3900 Orange Ct
Boulder, CO 80304
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 80308


Naropa University 2130 Arapahoe Ave
Boulder, CO 80302-6697
Type: Post Secondary
University Of Colorado Boulder Regent Drive At Broadway
Boulder, CO 80309-0017
Type: Post Secondary
Auguste Escoffier School Of Culinary Arts-Boulder 637 S Broadway, Ste H
Boulder, CO 80305
Type: Post Secondary
Dr. Ida Rolf Institute 5055 Chaparral Court, Suite 103
Boulder, CO 80301-0000
Type: Post Secondary
Southwest Acupuncture College-Boulder 6630 Gunpark Dr Suite 200
Boulder, CO 80301
Type: Post Secondary
Institute Of Taoist Education And Acupuncture 317 W South Boulder Rd, Suite 5
Louisville, CO 80027
Type: Post Secondary

Sources & References


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.

  1. U.S. Postal Service [Last Updated: 1/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 1/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 1/1/2026], https://nces.ed.gov