Note: Every ZIP Code has a single ACTUAL City Name assigned by the US Postal Service (USPS).
See the specific ZIP Code for acceptable Alternate City Names and spelling variations.
ZIP Codes in Boulder County Address Data
Businesses Addresses: 17,420
PO Box Addresses: 9,264
Residential Addresses: 200,714
Multi-Family Addresses: 40,654
Single Family Addresses: 157,036
Advertisement
Map of Boulder County, CO ZIP Codes With Actual (Default) City Names