Population.us > Illinois

Population of Illinois state

Last official estimated population of Illinois was 12,859,995 (year 2015)[1]. This was 4% of total US population. Area of Illinois is 57,913.6 mi² (=149995.5 km²), in this year population density was 222.06 p/mi². If population growth rate would be same as in period 2010-2015 (+0.05%/yr), Illinois population in 2017 would be 12,871,759*.


Historical population

Historical population of Illinois state for period 1800-2015 [1] , [2] , [3]:

Maps: Population, population density, population changes

Estimated population for 2015[1]. Population density is in p./sq.mi [4]. Changes are for period 2010-2015. Value is %/year. Boundary lines are apx. 2012 [5]. Click on flag to hide it.

PopulationDensityChanges

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Annual growth rate

[1800-1810] +17.45 %/yr
[1810-1820] +16.22 %/yr
[1820-1830] +11.05 %/yr
[1830-1840] +11.7 %/yr
[1840-1850] +5.98 %/yr
[1850-1860] +7.23 %/yr
[1860-1870] +4.02 %/yr
[1870-1880] +1.94 %/yr
[1880-1890] +2.2 %/yr
[1890-1900] +2.34 %/yr
[1900-1910] +1.58 %/yr
[1910-1920] +1.41 %/yr
[1920-1930] +1.64 %/yr
[1930-1940] +0.34 %/yr
[1940-1950] +0.99 %/yr
[1950-1960] +1.47 %/yr
[1960-1970] +0.98 %/yr
[1970-1980] +0.28 %/yr
[1980-1990] +0 %/yr
[1990-2000] +0.83 %/yr
[2000-2010] +0.33 %/yr
[2010-2015] +0.05 %/yr

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Or click: Counties in Illinois

Settlements in Illinois


Largest cities in Illinois

Largest counties


Sources, notices

*Calculated by population.us from last known population growth rate, not official data.***

[1] State population - 2015, retrieved 02/23/2016

[2] State population 2000-2010, retrieved 02/23/2016

[3] Population of States and Counties of the United States: 1790 to 1991, PDF, 15 Mb, census.gov, retrieved 02/23/2016

[4] United States Summary: 2010, Population and Housing Unit Counts, 2010 Census of Population and Housing, State areas, PDF 35 Mb, September 2012. pp. V–2, 1 & 41 (Tables 1 & 18). Retrieved February 24, 2016.

[5] Illinois boundaries, CSV file, retrived 03/18/2016

Notes / IL

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