Jefferson County Population 2018

Jefferson County's estimated population is 38,179 with a growth rate of -0.34% in the past year according to the most recent United States census data. Jefferson County is the 36th largest county in Illinois.

Year Population Growth Growth Rate
201738,179-129-0.34%
201638,30880.02%
201538,300-76-0.20%
201438,376-253-0.65%
201338,629-21-0.05%
201238,650-92-0.24%
201138,742-15-0.04%
201038,7571,7374.69%
199037,0204681.28%
198036,5525,10616.24%
197031,446-869-2.69%
196032,315-3,577-9.97%
195035,8921,5174.41%
194034,3753,34110.77%
193031,0342,5548.97%
192028,480-631-2.17%
191029,1119783.48%
190028,1335,54324.54%
189022,5901,9049.20%
188020,6862,82215.80%
187017,8644,89937.79%
186012,9654,85659.88%
18508,1092,34740.73%
18405,7623,207125.52%
18302,5551,864269.75%
18206910.00%

Jefferson County Population Growth

Population Data via

Jefferson County Race Data

Race Population Percentage
White33,62688.07%
Black or African American3,4669.08%
Two or More Races6971.83%
Asian4601.20%
American Indian and Alaska Native1300.34%
Native Hawaiian and Other Pacific Islander110.03%

Jefferson County Population Pyramid

0k0k0k1k1k1k1k1k Male Population0k0k0k1k1k1k1k1k 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