Cass County Population 2018

Cass County's estimated population is 12,505 with a growth rate of -1.39% in the past year according to the most recent United States census data. Cass County is the 83rd largest county in Illinois.

Year Population Growth Growth Rate
201712,505-176-1.39%
201612,681-164-1.28%
201512,845-233-1.78%
201413,078-212-1.60%
201313,290-134-1.00%
201213,424-197-1.45%
201113,621-14-0.10%
201013,6351981.47%
199013,437-1,647-10.92%
198015,0848656.08%
197014,219-320-2.20%
196014,539-558-3.70%
195015,097-1,328-8.09%
194016,425-112-0.68%
193016,537-1,359-7.59%
192017,8965243.02%
191017,3721500.87%
190017,2221,2597.89%
189015,9631,47010.14%
188014,4932,91325.16%
187011,5802552.25%
186011,3254,07256.14%
18507,2534,272143.31%
18402,9810.00%

Cass County Population Growth

Population Data via

Cass County Race Data

Race Population Percentage
White12,00295.98%
Black or African American5604.48%
Two or More Races1421.14%
American Indian and Alaska Native820.66%
Asian730.58%
Native Hawaiian and Other Pacific Islander100.08%

Cass County Population Pyramid

0k0k0k0k0k1k Male Population0k0k0k0k0k1k 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