Lee County, Illinois
Demographics
As of the 2010 United States Census, there were 36,031 people, 13,758 households, and 9,064 families residing in the county. The population density was 49.7 inhabitants per square mile (19.2/km²).

Lee County, Illinois

Section Title: Demographics
Table Section Text: As of the 2010 United States Census, there were 36,031 people, 13,758 households, and 9,064 families residing in the county. The population density was 49.7 inhabitants per square mile (19.2/km²).

Historical population

Census	Pop.	%±

1840	2,035	—

1850	5,292	160.0%

1860	17,651	233.5%

1870	27,171	53.9%

1880	27,491	1.2%

1890	26,187	−4.7%

1900	29,894	14.2%

1910	27,750	−7.2%

1920	28,004	0.9%

1930	32,329	15.4%

1940	34,604	7.0%

1950	36,451	5.3%

1960	38,749	6.3%

1970	37,947	−2.1%

1980	36,328	−4.3%

1990	34,392	−5.3%

2000	36,062	4.9%

2010	36,031	−0.1%

Est. 2016	34,251	−4.9%

US Decennial Census 1790-1960 1900-1990 1990-2000 2010-2013

Sentence(s)

According to the 2010 census, Lee County has a population of 36,031.

final_sentence: According to the 2010 census, Lee County has a population of 36,031.