Last official estimated population of Rock Rapids city (Lyon County**, Iowa state) was 2,580 (year 2014)[1]. This was 0.001% of total US population and 0.08% of total Iowa state population. Area of Rock Rapids city is 4.0 mi² (=10.2 km²)[6], in this year population density was 652.01 p/mi². If population growth rate would be same as in period 2010-2014 (+0.3%/yr), Rock Rapids city population in 2026 would be 2,675*.
Historical population of Rock Rapids city for period 1890-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1890-1900] +2.39 %/yr
[1900-1910] +1.28 %/yr
[1910-1920] +0.8 %/yr
[1920-1930] +0.22 %/yr
[1930-1940] +1.41 %/yr
[1940-1950] +0.32 %/yr
[1950-1960] +0.52 %/yr
[1960-1970] -0.55 %/yr
[1970-1980] +0.23 %/yr
[1980-1990] +0.11 %/yr
[1990-2000] -0.56 %/yr
[2000-2005] -0.09 %/yr
[2005-2010] -0.11 %/yr
[2010-2014] +0.3 %/yr
• George city population
10 mi, 
125°
• Larchwood city
13.7 mi, 
278°
• Hills city
12 mi, 
305°
• Doon city
10.7 mi, 
198°
• Ellsworth city
9.9 mi, 
48°
• Little Rock city
14.4 mi, 
84°
• Lester city
8.4 mi, 276°
• Magnolia city
15.7 mi, 
16°
• Alvord city
9 mi, 
229°
• Steen city
7.8 mi, 
321°
*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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