Last official estimated population of Rock Island city (Rock Island County**, Illinois state) was 38,642 (year 2014)[1]. This was 0.012% of total US population and 0.3% of total Illinois state population. Area of Rock Island city is 17.1 mi² (=44.2 km²)[6], in this year population density was 2,264.80 p/mi². If population growth rate would be same as in period 2010-2014 (-0.24%/yr), Rock Island city population in 2021 would be 37,993*.
Historical population of Rock Island city for period 1850-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1850-1860] +11.61 %/yr
[1860-1870] +4.4 %/yr
[1870-1880] +3.98 %/yr
[1880-1890] +1.58 %/yr
[1890-1900] +3.64 %/yr
[1900-1910] +2.24 %/yr
[1910-1920] +3.75 %/yr
[1920-1930] +0.76 %/yr
[1930-1940] +1.2 %/yr
[1940-1950] +1.31 %/yr
[1950-1960] +0.63 %/yr
[1960-1970] -0.33 %/yr
[1970-1980] -0.69 %/yr
[1980-1990] -1.43 %/yr
[1990-2000] -0.23 %/yr
[2000-2005] -0.36 %/yr
[2005-2010] +0.05 %/yr
[2010-2014] -0.24 %/yr
• Davenport city population
5.9 mi, 
349°
• Moline city
4.7 mi, 
79°
• Bettendorf city
8.6 mi, 
39°
• Silvis city
9.2 mi, 77°
• Milan village
2.6 mi, 
156°
• Coal Valley village
6.6 mi, 
102°
• Andalusia village
7.2 mi, 
250°
• Oak Grove village
4 mi, 
173°
• Riverdale city
7.7 mi, 
53°
• Panorama Park city
8.9 mi, 48°
*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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