Union County Population 2017

Union County's estimated population is 55,457 with a growth rate of 2.10% in the past year according to the most recent United States census data. Union County is the 46th largest county in Ohio.

Year Population Growth Growth Rate
201655,4571,1422.10%
201554,3155781.08%
201453,7373060.57%
201353,4315971.13%
201252,834-292-0.55%
201153,1267101.35%
201052,41620,44763.96%
199031,9692,4338.24%
198029,5365,75024.17%
197023,7869334.08%
196022,8532,16610.47%
195020,6876753.37%
194020,0128204.27%
193019,192-1,726-8.25%
192020,918-953-4.36%
191021,871-471-2.11%
190022,342-518-2.27%
189022,8604852.17%
188022,3753,64519.46%
187018,7302,22313.47%
186016,5074,30335.26%
185012,2043,78244.91%
18408,4225,230163.85%
18303,1921,19659.92%
18201,9960.00%

Union County Population Growth

Population Data via

Union County Race Data

Race Population Percentage
White50,08390.31%
Asian1,9613.54%
Black or African American1,3682.47%
Two or More Races7601.37%
American Indian and Alaska Native1240.22%
Native Hawaiian and Other Pacific Islander190.03%

Union County Population Pyramid

0k1k1k2k2kUnion County Male Population0k1k1k2k2kUnion County Female Population

Population of Cities in Union County

City 2010 Census 2016 Estimated Growth Growth Rate
Marysville220982340613085.92%
Richwood22322316843.76%
Milford Center792840486.06%
Magnetic Springs268281134.85%
Unionville Center23723700.00%
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