Last official estimated population of Thornton city (Cerro Gordo County**, Iowa state) was 410 (year 2014)[1]. This was 0% of total US population and 0.01% of total Iowa state population. Area of Thornton city is 1.2 mi² (=3.2 km²)[6], in this year population density was 328.79 p/mi². If population growth rate would be same as in period 2010-2014 (-0.72%/yr), Thornton city population in 2023 would be 384*.
Historical population of Thornton city for period 1900-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1900-1910] -0.98 %/yr
[1910-1920] +1.58 %/yr
[1920-1930] +1.91 %/yr
[1930-1940] +0.38 %/yr
[1940-1950] +1.03 %/yr
[1950-1960] +0.18 %/yr
[1960-1970] -0.9 %/yr
[1970-1980] +0.75 %/yr
[1980-1990] -1.4 %/yr
[1990-2000] +0.95 %/yr
[2000-2005] -0.14 %/yr
[2005-2010] +0.14 %/yr
[2010-2014] -0.72 %/yr
• Clear Lake city population
13.2 mi, 
2°
• Belmond city
13.1 mi, 
238°
• Sheffield city
9.9 mi, 
112°
• Rockwell city
10.4 mi, 
76°
• Latimer city
12.6 mi, 
175°
• Klemme city
11.7 mi, 
292°
• Meservey city
4.8 mi, 
245°
• Alexander city
10.7 mi, 
205°
• Swaledale city
4.3 mi, 
58°
• Goodell city
11.6 mi, 
262°
*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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