Lake County Population 2018

Lake County's estimated population is 703,047 with a growth rate of -0.05% in the past year according to the most recent United States census data. Lake County is the 3rd largest county in Illinois.

Year Population Growth Growth Rate
2016703,047-366-0.05%
2015703,413560.01%
2014703,357-54-0.01%
2013703,4112,1910.31%
2012701,2203270.05%
2011700,893-3,455-0.49%
2010704,348187,93036.39%
1990516,41876,04617.27%
1980440,37257,73415.09%
1970382,63888,98230.30%
1960293,656114,55963.96%
1950179,09758,00347.90%
1940121,09416,70716.00%
1930104,38730,10240.52%
192074,28519,22734.92%
191055,05820,55459.57%
190034,50410,26942.37%
189024,2352,93913.80%
188021,2962821.34%
187021,0142,75715.10%
186018,2574,03128.34%
185014,22611,592440.09%
18402,6340.00%

Lake County Population Growth

Population Data via

Lake County Race Data

Race Population Percentage
White577,54782.15%
Asian52,4307.46%
Black or African American52,3657.45%
Two or More Races14,4562.06%
American Indian and Alaska Native5,9780.85%
Native Hawaiian and Other Pacific Islander6370.09%

Lake County Population Pyramid

0k5k10k15k20k25k30k Male Population0k5k10k15k20k25k30k 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