Dickinson County, Iowa Population 2019
Dickinson County, Iowa's estimated population is 17,173 with a growth rate of 0.37% in the past year according to the most recent United States census data. Dickinson County, Iowa is the 42nd largest county in Iowa.
| Year | Population | Growth | Growth Rate |
| 2018 | 17,153 | -20 | -0.12% |
| 2017 | 17,173 | 63 | 0.37% |
| 2016 | 17,110 | 105 | 0.62% |
| 2015 | 17,005 | 165 | 0.98% |
| 2014 | 16,840 | -38 | -0.23% |
| 2013 | 16,878 | -47 | -0.28% |
| 2012 | 16,925 | 67 | 0.40% |
| 2011 | 16,858 | 188 | 1.13% |
| 2010 | 16,670 | 1,761 | 11.81% |
| 1990 | 14,909 | -720 | -4.61% |
| 1980 | 15,629 | 3,064 | 24.39% |
| 1970 | 12,565 | -9 | -0.07% |
| 1960 | 12,574 | -182 | -1.43% |
| 1950 | 12,756 | 571 | 4.69% |
| 1940 | 12,185 | 1,203 | 10.95% |
| 1930 | 10,982 | 741 | 7.24% |
| 1920 | 10,241 | 2,104 | 25.86% |
| 1910 | 8,137 | 142 | 1.78% |
| 1900 | 7,995 | 3,667 | 84.73% |
| 1890 | 4,328 | 2,427 | 127.67% |
| 1880 | 1,901 | 512 | 36.86% |
| 1870 | 1,389 | 1,209 | 671.67% |
| 1860 | 180 | 0.00% |