Population.us > Settlements > Colorado > Boulder city

Population of Boulder, CO

Last official estimated population of Boulder city (Boulder County**, Colorado state) was 105,112 (year 2014)[1]. This was 0.033% of total US population and 1.93% of total Colorado state population. Area of Boulder city is 25.9 mi² (=67 km²)[6], in this year population density was 4,061.51 p/mi². If population growth rate would be same as in period 2010-2014 (+1.93%/yr), Boulder city population in 2019 would be 115,639*.


Historical population

Historical population of Boulder city for period 1870-2014:

Boulder city on population map

Estimated population for 2014[1]. Click on flag to hide it.

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Annual growth rate

[1870-1880] +24.5 %/yr
[1880-1890] +0.82 %/yr
[1890-1900] +6.33 %/yr
[1900-1910] +4.49 %/yr
[1910-1920] +1.44 %/yr
[1920-1930] +0.2 %/yr
[1930-1940] +1.45 %/yr
[1940-1950] +4.44 %/yr
[1950-1960] +6.55 %/yr
[1960-1970] +5.89 %/yr
[1970-1980] +1.38 %/yr
[1980-1990] +1.16 %/yr
[1990-2000] +0.9 %/yr
[2000-2005] +0.12 %/yr
[2005-2010] +0.54 %/yr
[2010-2014] +1.93 %/yr

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Settlements near Boulder city

Westminster city population 14.1 mi, 135°
Longmont city 12.7 mi, 39°
Broomfield city 11.8 mi, 115°
Lafayette city 8.4 mi, 105°
Erie town 11.2 mi, 86°
Louisville city 7 mi, 124°
Superior town 8.3 mi, 143°
Lyons town 13.5 mi, 356°
Nederland town 14.1 mi, 251°
Jamestown town 9.5 mi, 310°


Sources, notices

*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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