There are 14 zip codes in Douglas County, Colorado. The most populated is 80134, located in Parker. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
8013475,383Parker
8012643,691Littleton
8013836,113Parker
8010435,084Castle Rock
8010833,259Castle Rock
8012929,974Littleton
8010927,852Castle Rock
8013025,551Littleton
8012422,567Lone Tree
8012513,048Littleton
801185,940Larkspur
801164,884Franktown
801354,061Sedalia
80131250Louviers

Zip Codes in Douglas County, Colorado by Population (2024)