Douglas County, Colorado ZIP Codes
- ZIP records
14 - Cities represented
8 - Sum of listed ZIP population estimates
373,996
Population sum includes positive estimates in these ZIP records; it is not an official county population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | Population estimate |
|---|---|---|---|
| 1 | 80134 | Parker | 80,302 |
| 2 | 80126 | Littleton | 44,882 |
| 3 | 80104 | Castle Rock | 38,479 |
| 4 | 80138 | Parker | 36,895 |
| 5 | 80108 | Castle Rock | 36,730 |
| 6 | 80129 | Littleton | 30,223 |
| 7 | 80109 | Castle Rock | 28,400 |
| 8 | 80130 | Littleton | 24,719 |
| 9 | 80124 | Lone Tree | 22,555 |
| 10 | 80125 | Littleton | 15,630 |
Cities in Douglas County
ZIP Directory
- ZIP 80104
- ZIP 80108
- ZIP 80109
- ZIP 80116
- ZIP 80118
- ZIP 80124
- ZIP 80125
- ZIP 80126
- ZIP 80129
- ZIP 80130
- ZIP 80131
- ZIP 80134
- ZIP 80135
- ZIP 80138
Browse all ZIP data for Colorado
Methodology: Records are grouped by the source file's listed county and state. Population sums add positive ZIP-level estimates and are not official county totals; city counts use distinct city labels in the source.