Lake County, Illinois
Demographics

Lake County, Illinois

Section Title: Demographics
Table Section Text: None

Historical population

Census	Pop.	%±

1840	2,634	—

1850	14,226	440.1%

1860	18,257	28.3%

1870	21,014	15.1%

1880	21,296	1.3%

1890	24,235	13.8%

1900	34,504	42.4%

1910	55,058	59.6%

1920	74,285	34.9%

1930	104,387	40.5%

1940	121,094	16.0%

1950	179,097	47.9%

1960	293,656	64.0%

1970	382,638	30.3%

1980	440,372	15.1%

1990	516,418	17.3%

2000	644,356	24.8%

2010	703,462	9.2%

Est. 2017	703,520	0.0%

U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2017

Sentence(s)

As of the 2010 Census, there were 703,462 people residing in the Lake county.

final_sentence: As of the 2010 Census, there were 703,462 people residing in the Lake county.