Douglas County Population 2017

Douglas County's estimated population is 328,632 with a growth rate of 1.94% in the past year according to the most recent United States census data. Douglas County is the 7th largest county in Colorado.

Year Population Growth Growth Rate
2016328,6326,2511.94%
2015322,3817,4002.35%
2014314,9818,5392.79%
2013306,4427,6882.57%
2012298,7546,1472.10%
2011292,6075,6281.96%
2010286,979226,588375.20%
199060,39135,238140.09%
198025,15316,746199.19%
19708,4073,59174.56%
19604,8161,30937.33%
19503,507110.31%
19403,496-2-0.06%
19303,498-19-0.54%
19203,51732510.18%
19103,192722.31%
19003,1201143.79%
18903,00652020.92%
18802,4861,09879.11%
18701,3880.00%

Douglas County Population Growth

Population Data via

Douglas County Race Data

Race Population Percentage
White293,97589.45%
Asian14,3374.36%
Two or More Races7,9982.43%
Black or African American4,2371.29%
American Indian and Alaska Native1,5030.46%
Native Hawaiian and Other Pacific Islander3310.10%

Douglas County Population Pyramid

0k5k10k15kDouglas County Male Population0k5k10k15kDouglas County Female Population

Population of Cities in Douglas County

City 2010 Census 2016 Estimated Growth Growth Rate
Castle Rock4826257666940419.49%
Parker4529751163586612.95%
Littleton4165146333468211.24%
Lone Tree1111313271215819.42%
Larkspur185195105.41%
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990