County ProfileCO
Douglas County
Population: 357,978 · 10 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
357,978
People
Median age
39.6
Housing
Total households
139,960
Income
Median household income
$149,594
Housing
Total housing units
144,432
Employment
Employment rate
69%
Education
Bachelor’s degree or higher
62%
Healthcare
Insured population
96.1%
County details
Local time 02:47:08(MT)| Name | Douglas |
|---|---|
| Total ZIP codes | 10total |
| ZIP codes (by type) | 9 Standard1 PO Box |
| Area code | 303, 720, 983 |
| Timezone | Mountain Time (MT) |
| Coordinates | 39.325414, -104.9259871 |
| Land area | 840.9 sq miles(2,177.9 km²) |
Map of Douglas county, Colorado with ZIP codes
Cities and Communities in Douglas County
Compare the largest cities in Douglas County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Douglas County
Review the most populated postal areas across Douglas County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 80134 | Parker | $146,778 | 76,369 |
| 80104 | Castle Rock | $134,335 | 34,727 |
| 80138 | Parker | $145,013 | 34,337 |
| 80108 | Castle Rock | $181,049 | 32,188 |
| 80109 | Castle Rock | $155,025 | 27,148 |
| 80124 | Lone Tree | $129,858 | 22,541 |
| 80118 | Larkspur | $158,155 | 6,057 |
| 80116 | Franktown | $146,000 | 4,716 |
| 80135 | Sedalia | $136,083 | 4,100 |
| 80131 | Louviers | $107,250 | 243 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS