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: 24,457
PO Box Addresses: 12,123
Residential Addresses: 312,872
Multi-Family Addresses: 69,376
Single Family Addresses: 238,269
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Map of Jefferson County, CO ZIP Codes With Actual (Default) City Names
