Last official estimated population of South Beloit city (Winnebago County**, Illinois state) was 7,719 (year 2014)[1]. This was 0.002% of total US population and 0.06% of total Illinois state population. Area of South Beloit city is 6.1 mi² (=15.9 km²)[6], in this year population density was 1,259.63 p/mi². If population growth rate would be same as in period 2010-2014 (-0.55%/yr), South Beloit city population in 2026 would be 7,222*.
Historical population of South Beloit city for period 1920-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1920-1930] +5.1 %/yr
[1930-1940] +1.81 %/yr
[1940-1950] +1.32 %/yr
[1950-1960] +1.62 %/yr
[1960-1970] +0.06 %/yr
[1970-1980] +0.72 %/yr
[1980-1990] +0.02 %/yr
[1990-2000] +2.82 %/yr
[2000-2005] +4.33 %/yr
[2005-2010] +3.37 %/yr
[2010-2014] -0.55 %/yr
• Janesville city population
13.8 mi, 
3°
• Beloit city
2.7 mi, 
10°
• Loves Park city
10.3 mi, 
171°
• Machesney Park village
8.1 mi, 
178°
• Roscoe village
4.2 mi, 167°
• Rockton village
3 mi, 
218°
• Poplar Grove village
13.2 mi, 
134°
• Clinton village
9.5 mi, 
58°
• Timberlane village
13.2 mi, 
141°
• Caledonia village
10.6 mi, 140°
*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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