Population.us

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 2023 would be 124,814*.

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.

Population • Legends • Position

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