Mahaska County Population 2018

Mahaska County's estimated population is 22,235 with a growth rate of 0.13% in the past year according to the most recent United States census data. Mahaska County is the 28th largest county in Iowa.

Year Population Growth Growth Rate
201722,235290.13%
201622,206-102-0.46%
201522,308-44-0.20%
201422,352-53-0.24%
201322,405120.05%
201222,393-97-0.43%
201122,490840.37%
201022,4068844.11%
199021,522-1,345-5.88%
198022,8676903.11%
197022,177-1,425-6.04%
196023,602-1,070-4.34%
195024,672-1,813-6.85%
194026,4856812.64%
193025,804-466-1.77%
192026,270-3,590-12.02%
191029,860-4,413-12.88%
190034,2735,46818.98%
189028,8053,60314.30%
188025,2022,69411.97%
187022,5087,69251.92%
186014,8168,827147.39%
18505,9890.00%

Mahaska County Population Growth

Population Data via

Mahaska County Race Data

Race Population Percentage
White21,37396.12%
Black or African American3141.41%
Two or More Races2611.17%
Asian2441.10%
American Indian and Alaska Native890.40%
Native Hawaiian and Other Pacific Islander100.04%

Mahaska 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