Montgomery County, Illinois
Demographics
As of the 2010 United States Census, there were 30,104 people, 11,652 households, and 7,806 families residing in the county. The population density was 42.8 inhabitants per square mile (16.5/km²).

Montgomery County, Illinois

Section Title: Demographics
Table Section Text: As of the 2010 United States Census, there were 30,104 people, 11,652 households, and 7,806 families residing in the county. The population density was 42.8 inhabitants per square mile (16.5/km²).

Historical population

Census	Pop.	%±

1830	2,953	—

1840	4,490	52.0%

1850	6,277	39.8%

1860	13,979	122.7%

1870	25,314	81.1%

1880	28,078	10.9%

1890	30,003	6.9%

1900	30,836	2.8%

1910	35,311	14.5%

1920	41,403	17.3%

1930	35,278	−14.8%

1940	34,499	−2.2%

1950	32,460	−5.9%

1960	31,244	−3.7%

1970	30,260	−3.1%

1980	31,686	4.7%

1990	30,728	−3.0%

2000	30,652	−0.2%

2010	30,104	−1.8%

Est. 2016	28,952	−3.8%

U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2013

Sentence(s)

According to the 2010 census, Montgomery County had a population of 30,104.

final_sentence: According to the 2010 census, Montgomery County had a population of 30,104.