DeKalb County Population 2017

DeKalb County's estimated population is 104,528 with a growth rate of -0.01% in the past year according to the most recent United States census data. DeKalb County is the 20th largest county in Illinois.

Year Population Growth Growth Rate
2016104,528-13-0.01%
2015104,541-257-0.25%
2014104,7986500.62%
2013104,148-128-0.12%
2012104,276-88-0.08%
2011104,364-812-0.77%
2010105,17627,24434.96%
199077,9323,3084.43%
198074,6242,9704.14%
197071,65419,94038.56%
196051,71410,93326.81%
195040,7816,39318.59%
194034,3881,7445.34%
193032,6441,3054.16%
192031,339-2,118-6.33%
191033,4571,7015.36%
190031,7564,69017.33%
189027,0662981.11%
188026,7683,50315.06%
187023,2654,17921.90%
186019,08611,546153.13%
18507,5405,843344.31%
18401,6970.00%

DeKalb County Population Growth

Population Data via

DeKalb County Race Data

Race Population Percentage
White91,43687.48%
Black or African American7,7497.41%
Asian2,8902.76%
Two or More Races1,9621.88%
American Indian and Alaska Native4300.41%
Native Hawaiian and Other Pacific Islander740.07%

DeKalb County Population Pyramid

0k2k4k6k8kDeKalb County Male Population0k2k4k6k8kDeKalb County Female Population

Population of Cities in DeKalb County

City 2010 Census 2016 Estimated Growth Growth Rate
Sycamore17518178673491.99%
Sandwich74147358-56-0.76%
Genoa51825194120.23%
Cortland42714326551.29%
Hinckley20702057-13-0.63%
Somonauk19011882-19-1.00%
Kirkland17441732-12-0.69%
Waterman15061493-13-0.86%
Kingston11681161-7-0.60%
Malta11671153-14-1.20%
Shabbona941933-8-0.85%
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