Clayton County Population 2018

Clayton County's estimated population is 17,637 with a growth rate of -0.06% in the past year according to the most recent United States census data. Clayton County is the 40th largest county in Iowa.

Year Population Growth Growth Rate
201717,637-10-0.06%
201617,647-68-0.38%
201517,715-48-0.27%
201417,763-29-0.16%
201317,792-156-0.87%
201217,948-70-0.39%
201118,018-63-0.35%
201018,081-973-5.11%
199019,054-2,044-9.69%
198021,0984922.39%
197020,606-1,356-6.17%
196021,962-560-2.49%
195022,522-1,812-7.45%
194024,334-225-0.92%
193024,559-473-1.89%
192025,032-544-2.13%
191025,576-2,174-7.83%
190027,7501,0173.80%
189026,733-2,096-7.27%
188028,8291,0583.81%
187027,7717,04333.98%
186020,72816,855435.19%
18503,8732,772251.77%
18401,1010.00%

Clayton County Population Growth

Population Data via

Clayton County Race Data

Race Population Percentage
White17,28297.99%
Two or More Races1510.86%
Black or African American1470.83%
Asian530.30%
American Indian and Alaska Native270.15%
Native Hawaiian and Other Pacific Islander140.08%

Clayton County Population Pyramid

0k0k0k1k1k Male Population0k0k0k1k1k 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