State/County Annual Population Change

Select a state and (optional) county to show annual population change from 2000 to 2018.

Usage/data notes

  • Natural increase is the difference between births and deaths in a year.
  • Net migration is the difference between total change (starting and ending populations) and natural increase. Positive numbers represent migration into the selected area.
  • Pre-2010 figures are intercensal estimates issued October 2011.
  • Visit the MCDC population estimates page for more population-related data applications.

Polk County, MO

Year Starting population Ending population Change Percent change Natural increase Net migration
2000-2001 26,999 27,421 422 1.56% 88 334
2001-2002 27,421 27,826 405 1.48% 27 378
2002-2003 27,826 28,345 519 1.87% 27 492
2003-2004 28,345 28,690 345 1.22% 67 278
2004-2005 28,690 29,308 618 2.15% 76 542
2005-2006 29,308 30,053 745 2.54% 68 677
2006-2007 30,053 30,576 523 1.74% 149 374
2007-2008 30,576 30,790 214 0.70% 102 112
2008-2009 30,790 31,085 295 0.96% 93 202
2009-2010 31,085 31,171 86 0.28% 45 41
2010-2011 31,171 31,206 35 0.11% 44 -9
2011-2012 31,206 31,105 -101 -0.32% 27 -128
2012-2013 31,105 31,073 -32 -0.10% 48 -80
2013-2014 31,073 31,054 -19 -0.06% 0 -19
2014-2015 31,032 31,229 197 0.63% 42 155
2015-2016 31,229 31,412 183 0.59% 54 129
2016-2017 31,412 31,766 354 1.13% -4 358
2017-2018 31,766 32,201 435 1.37% -35 470