There are 27 zip codes in Jefferson County, Colorado. The most populated is 80123, located in Littleton. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
80123Littleton45,388
80127Littleton44,235
80401Golden42,777
80128Littleton37,061
80003Arvada36,233
80004Arvada35,349
80227Denver35,187
80021Broomfield35,128
80228Denver34,813
80226Denver32,063
80005Arvada29,155
80033Wheat Ridge27,384
80214Denver26,634
80232Denver22,707
80403Golden20,809
80002Arvada20,589
80215Denver19,143
80007Arvada17,641
80465Morrison15,783
80235Denver8,593
80433Conifer8,386
80470Pine3,898
80454Indian Hills1,430
80457Kittredge430
80425Buffalo Creek329
80453Idledale329
80419Golden0
showing: 27 rows

Jefferson County, Colorado Zip Codes by Population (2024)