Population.us > Settlements > Illinois > Rock Falls city

Population of Rock Falls, IL

Last official estimated population of Rock Falls city (Whiteside County**, Illinois state) was 9,062 (year 2014)[1]. This was 0.003% of total US population and 0.07% of total Illinois state population. Area of Rock Falls city is 3.9 mi² (=10 km²)[6], in this year population density was 2,351.93 p/mi². If population growth rate would be same as in period 2010-2014 (-0.56%/yr), Rock Falls city population in 2024 would be 8,571*.


Historical population

Historical population of Rock Falls city for period 1870-2014:

Rock Falls city on population map

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

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Annual growth rate

[1870-1880] +6.62 %/yr
[1880-1890] +7.83 %/yr
[1890-1900] +1.37 %/yr
[1900-1910] +2.02 %/yr
[1910-1920] +0.97 %/yr
[1920-1930] +2.89 %/yr
[1930-1940] +2.51 %/yr
[1940-1950] +4.82 %/yr
[1950-1960] +2.54 %/yr
[1960-1970] +0.03 %/yr
[1970-1980] +0.33 %/yr
[1980-1990] -0.94 %/yr
[1990-2000] -0.1 %/yr
[2000-2005] -0.49 %/yr
[2005-2010] -0.17 %/yr
[2010-2014] -0.56 %/yr

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Settlements near Rock Falls city

Dixon city population 12.1 mi, 66°
Sterling city 1.8 mi, 358°
Morrison city 14 mi, 279°
Milledgeville village 13.8 mi, 342°
Tampico village 10.9 mi, 205°
Lyndon village 12.4 mi, 252°
Nelson village 4.9 mi, 71°
Coleta village 10.5 mi, 328°
Harmon village 8 mi, 117°
Deer Grove village 11.3 mi, 178°


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) 2014, archived from the original, retrieved 02/23/2016

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

[3] Places: 1990 and 1999 Populations, With Numeric and Percent Population Change, archived from the original, 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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