Winneshiek County Population 2017

Winneshiek County's estimated population is 20,561 with a growth rate of -0.93% in the past year according to the most recent United States census data. Winneshiek County is the 30th largest county in Iowa.

Year Population Growth Growth Rate
201620,561-193-0.93%
201520,754260.13%
201420,728-134-0.64%
201320,862-180-0.86%
201221,042-3-0.01%
201121,045-20-0.09%
201021,0652181.05%
199020,847-1,029-4.70%
198021,8761180.54%
197021,7581070.49%
196021,651120.06%
195021,639-624-2.80%
194022,2636332.93%
193021,630-461-2.09%
192022,0913621.67%
191021,729-2,002-8.44%
190023,7311,2035.34%
189022,528-1,410-5.89%
188023,9383681.56%
187023,5709,62869.06%
186013,94213,3962453.48%
18505460.00%

Winneshiek County Population Growth

Population Data via

Winneshiek County Race Data

Race Population Percentage
White20,16298.06%
Asian2271.10%
Two or More Races1710.83%
Black or African American1630.79%
American Indian and Alaska Native250.12%
Native Hawaiian and Other Pacific Islander60.03%

Winneshiek County Population Pyramid

0k0k0k1k1k1k1kWinneshiek County Male Population0k0k0k1k1k1k1kWinneshiek County Female Population

Population of Cities in Winneshiek County

City 2010 Census 2016 Estimated Growth Growth Rate
Decorah81357918-217-2.67%
Calmar982953-29-2.95%
Ossian845809-36-4.26%
Spillville370350-20-5.41%
Fort Atkinson349330-19-5.44%
Ridgeway307300-7-2.28%
Castalia173166-7-4.05%
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