Adams County Population 2018

Adams County's estimated population is 503,167 with a growth rate of 1.16% in the past year according to the most recent United States census data. Adams County is the 5th largest county in Colorado.

Year Population Growth Growth Rate
2017503,1675,7721.16%
2016497,3957,5731.55%
2015489,82210,3342.16%
2014479,48810,1112.15%
2013469,3779,5162.07%
2012459,8618,4181.86%
2011451,4437,7711.75%
2010443,672178,63467.40%
1990265,03819,0947.76%
1980245,94460,15532.38%
1970185,78965,49354.44%
1960120,29680,062198.99%
195040,23417,75378.97%
194022,4812,23611.04%
193020,2455,81540.30%
192014,4305,53862.28%
19108,8920.00%

Adams County Population Growth

Population Data via

Adams County Race Data

Race Population Percentage
White425,77184.62%
Asian20,2264.02%
Black or African American18,3033.64%
Two or More Races14,6842.92%
American Indian and Alaska Native10,6162.11%
Native Hawaiian and Other Pacific Islander1,0740.21%

Adams County Population Pyramid

0k5k10k15k20k Male Population0k5k10k15k20k Female Population8580757065605550454035302520151050
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