Decatur County Population 2017

Decatur County's estimated population is 8,141 with a growth rate of -0.54% in the past year according to the most recent United States census data. Decatur County is the 86th largest county in Iowa.

Year Population Growth Growth Rate
20168,141-44-0.54%
20158,185-46-0.56%
20148,231-9-0.11%
20138,240-15-0.18%
20128,255-6-0.07%
20118,261-160-1.90%
20108,421831.00%
19908,338-1,456-14.87%
19809,794570.59%
19709,737-802-7.61%
196010,539-2,062-16.36%
195012,601-1,411-10.07%
194014,012-891-5.98%
193014,903-1,663-10.04%
192016,5662191.34%
191016,347-1,768-9.76%
190018,1152,47215.80%
189015,6433072.00%
188015,3363,31827.61%
187012,0183,34138.50%
18608,6777,712799.17%
18509650.00%

Decatur County Population Growth

Population Data via

Decatur County Race Data

Race Population Percentage
White7,80195.82%
Black or African American1491.83%
Two or More Races1131.39%
Asian640.79%
American Indian and Alaska Native400.49%
Native Hawaiian and Other Pacific Islander180.22%

Decatur County Population Pyramid

0k0k0k0k0k1k1kDecatur County Male Population0k0k0k0k0k1k1kDecatur County Female Population

Population of Cities in Decatur County

City 2010 Census 2016 Estimated Growth Growth Rate
Lamoni23242354301.29%
Leon19771880-97-4.91%
Grand River236223-13-5.51%
Van Wert225213-12-5.33%
Garden Grove211207-4-1.90%
Davis City204193-11-5.39%
Weldon125118-7-5.60%
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