Marion County Population 2018

Marion County's estimated population is 64,967 with a growth rate of -0.56% in the past year according to the most recent United States census data. Marion County is the 39th largest county in Ohio.

Year Population Growth Growth Rate
201764,967-367-0.56%
201665,334-45-0.07%
201565,379-405-0.62%
201465,784-168-0.25%
201365,952-315-0.48%
201266,267-317-0.48%
201166,5841290.19%
201066,4552,1813.39%
199064,274-3,700-5.44%
198067,9743,2505.02%
197064,7244,5037.48%
196060,22110,26220.54%
195049,9595,06111.27%
194044,898-522-1.15%
193045,4203,4168.13%
192042,0048,03323.65%
191033,9715,29318.46%
190028,6783,95115.98%
189024,7274,16220.24%
188020,5654,38127.07%
187016,1846944.48%
186015,4902,87222.76%
185012,618-2,147-14.54%
184014,7658,214125.39%
18306,5510.00%

Marion County Population Growth

Population Data via

Marion County Race Data

Race Population Percentage
White59,18491.10%
Black or African American4,2396.52%
Two or More Races1,2101.86%
Asian3860.59%
American Indian and Alaska Native1720.26%
Native Hawaiian and Other Pacific Islander410.06%

Marion County Population Pyramid

0k1k1k2k2k3k Male Population0k1k1k2k2k3k 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