Last official estimated population of Longmont city (Boulder County**, Colorado state) was 90,237 (year 2014)[1]. This was 0.028% of total US population and 1.65% of total Colorado state population. Area of Longmont city is 28.8 mi² (=74.6 km²)[6], in this year population density was 3,133.88 p/mi². If population growth rate would be same as in period 2010-2014 (+1.13%/yr), Longmont city population in 2024 would be 100,971*.
Historical population of Longmont city for period 1880-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1880-1890] +7.16 %/yr
[1890-1900] +3.62 %/yr
[1900-1910] +6.82 %/yr
[1910-1920] +3.23 %/yr
[1920-1930] +0.31 %/yr
[1930-1940] +2.08 %/yr
[1940-1950] +0.9 %/yr
[1950-1960] +3.56 %/yr
[1960-1970] +7.28 %/yr
[1970-1980] +6.35 %/yr
[1980-1990] +1.97 %/yr
[1990-2000] +3.2 %/yr
[2000-2005] +1.91 %/yr
[2005-2010] +1.87 %/yr
[2010-2014] +1.13 %/yr
• Boulder city population
12.7 mi, 219°
• Lafayette city
12.1 mi, 180°
• Erie town
9.6 mi, 161°
• Louisville city
14 mi, 189°
• Firestone town
8.1 mi, 99°
• Frederick town
8.2 mi, 120°
• Berthoud town
10.6 mi, 41°
• Dacono city
10.9 mi, 132°
• Mead town
7.1 mi, 55°
• Lyons town
9.7 mi, 292°
*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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