Union County Population 2017

Union County's estimated population is 12,420 with a growth rate of -0.22% in the past year according to the most recent United States census data. Union County is the 61st largest county in Iowa.

Year Population Growth Growth Rate
201612,420-27-0.22%
201512,447-174-1.38%
201412,621150.12%
201312,60670.06%
201212,599290.23%
201112,570500.40%
201012,520-230-1.80%
199012,750-1,108-8.00%
198013,8583012.22%
197013,557-155-1.13%
196013,712-1,939-12.39%
195015,651-629-3.86%
194016,280-1,155-6.62%
193017,4351670.97%
192017,2686523.92%
191016,616-3,312-16.62%
190019,9283,02817.92%
189016,9001,92012.82%
188014,9808,994150.25%
18705,9863,974197.51%
18602,0120.00%

Union County Population Growth

Population Data via

Union County Race Data

Race Population Percentage
White12,06697.15%
Black or African American1301.05%
Two or More Races1271.02%
Asian770.62%
American Indian and Alaska Native440.35%
Native Hawaiian and Other Pacific Islander30.02%

Union County Population Pyramid

0k0k0k0k0k1kUnion County Male Population0k0k0k0k0k1kUnion County Female Population

Population of Cities in Union County

City 2010 Census 2016 Estimated Growth Growth Rate
Creston78347829-5-0.06%
Afton845832-13-1.54%
Lorimor360345-15-4.17%
Cromwell107106-1-0.93%
Arispe10099-1-1.00%
Shannon City7170-1-1.41%
Thayer5956-3-5.08%
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