Marion County Population 2017

Marion County's estimated population is 38,140 with a growth rate of -0.62% in the past year according to the most recent United States census data. Marion County is the 37th largest county in Illinois.

Year Population Growth Growth Rate
201638,140-238-0.62%
201538,378-108-0.28%
201438,486-108-0.28%
201338,594-325-0.84%
201238,919-85-0.22%
201139,004-445-1.13%
201039,449-2,112-5.08%
199041,561-1,962-4.51%
198043,5234,53711.64%
197038,986-363-0.92%
196039,349-2,351-5.64%
195041,700-6,289-13.11%
194047,98912,35434.67%
193035,635-1,862-4.97%
192037,4972,4036.85%
191035,0944,64815.27%
190030,4466,10525.08%
189024,3416552.77%
188023,6863,06414.86%
187020,6227,88361.88%
186012,7396,01989.57%
18506,7201,97841.71%
18404,7422,617123.15%
18302,1250.00%

Marion County Population Growth

Population Data via

Marion County Race Data

Race Population Percentage
White35,72993.68%
Black or African American1,5564.08%
Two or More Races6921.81%
Asian2490.65%
American Indian and Alaska Native1420.37%
Native Hawaiian and Other Pacific Islander100.03%

Marion County Population Pyramid

0k1k1k2kMarion County Male Population0k1k1k2kMarion County Female Population

Population of Cities in Marion County

City 2010 Census 2016 Estimated Growth Growth Rate
Centralia1303412572-462-3.54%
Salem74807241-239-3.20%
Sandoval12741220-54-4.24%
Odin10761033-43-4.00%
Kinmundy796769-27-3.39%
Patoka584565-19-3.25%
Iuka489467-22-4.50%
Alma320313-7-2.19%
Kell219214-5-2.28%
Vernon129126-3-2.33%
Walnut Hill108106-2-1.85%
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