Last official estimated population of Colby city (Thomas County**, Kansas state) was 5,388 (year 2014)[1]. This was 0.002% of total US population and 0.19% of total Kansas state population. Area of Colby city is 3.5 mi² (=9.1 km²)[6], in this year population density was 1,531.12 p/mi². If population growth rate would be same as in period 2010-2014 (+0%/yr), Colby city population in 2024 would be 5,391*.
Historical population of Colby city for period 1890-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1890-1900] +2.19 %/yr
[1900-1910] +5.83 %/yr
[1910-1920] -0.14 %/yr
[1920-1930] +6.81 %/yr
[1930-1940] +1.33 %/yr
[1940-1950] +4.61 %/yr
[1950-1960] +0.87 %/yr
[1960-1970] +1.02 %/yr
[1970-1980] +1.76 %/yr
[1980-1990] -0.01 %/yr
[1990-2000] -0.17 %/yr
[2000-2005] -0.76 %/yr
[2005-2010] +0.54 %/yr
[2010-2014] +0 %/yr
• Oakley city population
20.6 mi, 
150°
• Atwood city
29.4 mi, 
0°
• Hoxie city
32.4 mi, 
93°
• Brewster city
17.8 mi, 
265°
• Grinnell city
28.5 mi, 
128°
• Rexford city
17.1 mi, 
69°
• Selden city
27.7 mi, 67°
• Winona city
24.8 mi, 
205°
• Gem city
8.4 mi, 70°
• Menlo city
17.3 mi, 
96°
*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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