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 Jefferson County Address Data
Businesses Addresses: 24,288
PO Box Addresses: 10,740
Residential Addresses: 321,197
Multi-Family Addresses: 72,638
Single Family Addresses: 244,600
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Map of Jefferson County, CO ZIP Codes With Actual (Default) City Names