Population.us > Settlements > Illinois > Quincy city

Population of Quincy, IL

Last official estimated population of Quincy city (Adams County**, Illinois state) was 40,805 (year 2014)[1]. This was 0.013% of total US population and 0.32% of total Illinois state population. Area of Quincy city is 15.9 mi² (=41.2 km²)[6], in this year population density was 2,565.06 p/mi². If population growth rate would be same as in period 2010-2014 (+0.11%/yr), Quincy city population in 2018 would be 40,978*.


Historical population

Historical population of Quincy city for period 1840-2014:

Quincy city on population map

Estimated population for 2014[1]. Click on flag to hide it.

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Annual growth rate

[1840-1850] +11.52 %/yr
[1850-1860] +7.11 %/yr
[1860-1870] +5.78 %/yr
[1870-1880] +1.26 %/yr
[1880-1890] +1.45 %/yr
[1890-1900] +1.42 %/yr
[1900-1910] +0.09 %/yr
[1910-1920] -0.17 %/yr
[1920-1930] +0.87 %/yr
[1930-1940] +0.31 %/yr
[1940-1950] +0.24 %/yr
[1950-1960] +0.55 %/yr
[1960-1970] +0.34 %/yr
[1970-1980] -0.62 %/yr
[1980-1990] -0.49 %/yr
[1990-2000] +0.06 %/yr
[2000-2005] -0.25 %/yr
[2005-2010] +0.18 %/yr
[2010-2014] +0.11 %/yr

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Settlements near Quincy city

Hannibal city population 15.5 mi, 182°
Palmyra city 12.2 mi, 220°
Payson village 10.8 mi, 138°
Mendon village 11.8 mi, 24°
La Grange city 10.2 mi, 320°
Ursa village 9.7 mi,
Liberty village 14.9 mi, 104°
Plainville village 14.7 mi, 134°
Coatsburg village 13.5 mi, 59°
Columbus village 13 mi, 73°


Sources, notices

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

**Some cities are placed on more than one county. Only 1 county is shown.

[1] Cities and Towns (Incorporated Places and Minor Civil Divisions), retrieved 02/23/2016

[2] City and Town Intercensal Estimates (2000-2010), retrieved 02/23/2016

[3] Places: 1990 and 1999 Populations, With Numeric and Percent Population Change, retrieved 02/23/2016

[4] Population of the 100 Largest Urban Places: 1980,

[5] Population of the 100 Largest Urban Places in history,

[6] Area, latitude longitude data, retrieved 02/23/2016

[7] Through the Decades, Overview 1790-2010, PDF, large files! >100 Mb

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