Johnson County Population 2018

Johnson County's estimated population is 12,900 with a growth rate of -0.47% in the past year according to the most recent United States census data. Johnson County is the 82nd largest county in Illinois.

Year Population Growth Growth Rate
201712,900-61-0.47%
201612,961850.66%
201512,876-13-0.10%
201412,889200.16%
201312,86990.07%
201212,86050.04%
201112,8552461.95%
201012,6091,26211.12%
199011,3471,72317.90%
19809,6242,07427.47%
19707,5506228.98%
19606,928-1,801-20.63%
19508,729-1,998-18.63%
194010,7275245.14%
193010,203-1,819-15.13%
192012,022-2,309-16.11%
191014,331-1,336-8.53%
190015,6676544.36%
189015,0131,93514.80%
188013,0781,83016.27%
187011,2481,90620.40%
18609,3425,228127.08%
18504,11448813.46%
18403,6262,030127.19%
18301,59675389.32%
18208430.00%

Johnson County Population Growth

Population Data via

Johnson County Race Data

Race Population Percentage
White11,40088.37%
Black or African American1,2399.60%
Two or More Races1230.95%
American Indian and Alaska Native410.32%
Asian300.23%
Native Hawaiian and Other Pacific Islander40.03%

Johnson County Population Pyramid

0k0k0k0k0k1k1k Male Population0k0k0k0k0k1k1k 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