Polk County Population 2018

Polk County's estimated population is 31,794 with a growth rate of 1.22% in the past year according to the most recent United States census data. Polk County is the 36th largest county in Missouri.

Year Population Growth Growth Rate
201731,7943821.22%
201631,4121330.43%
201531,2791510.49%
201431,12840.01%
201331,124400.13%
201231,084-116-0.37%
201131,200360.12%
201031,1649,33842.78%
199021,8263,00415.96%
198018,8223,40722.10%
197015,4151,66212.08%
196013,753-2,309-14.38%
195016,062-1,338-7.69%
194017,400-403-2.26%
193017,803-2,548-12.52%
192020,351-1,210-5.61%
191021,561-1,694-7.28%
190023,2552,91614.34%
189020,3394,60529.27%
188015,7343,28926.43%
187012,4452,45024.51%
18609,9953,80961.57%
18506,186-2,263-26.78%
18408,4490.00%

Polk County Population Growth

Population Data via

Polk County Race Data

Race Population Percentage
White29,89594.03%
Two or More Races5061.59%
Black or African American2940.92%
Asian2590.81%
American Indian and Alaska Native2220.70%
Native Hawaiian and Other Pacific Islander70.02%

Polk County Population Pyramid

0k1k1k2k Male Population0k1k1k2k 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