Last official estimated population of Lafayette city (Boulder County**, Colorado state) was 27,081 (year 2014)[1]. This was 0.008% of total US population and 0.5% of total Colorado state population. Area of Lafayette city is 9.5 mi² (=24.7 km²)[6], in this year population density was 2,836.30 p/mi². If population growth rate would be same as in period 2010-2014 (+2.58%/yr), Lafayette city population in 2026 would be 36,784*.
Historical population of Lafayette city for period 1890-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position

[1890-1900] +8.99 %/yr
[1900-1910] +6.91 %/yr
[1910-1920] -0.41 %/yr
[1920-1930] +0.15 %/yr
[1930-1940] +1.09 %/yr
[1940-1950] +0.18 %/yr
[1950-1960] +2.25 %/yr
[1960-1970] +2.96 %/yr
[1970-1980] +9.89 %/yr
[1980-1990] +5.16 %/yr
[1990-2000] +4.53 %/yr
[2000-2005] +0.43 %/yr
[2005-2010] +0.67 %/yr
[2010-2014] +2.58 %/yr
• Thornton city population
9.8 mi,
122°
• Westminster city
8 mi,
166°
• Boulder city
8.4 mi,
285°
• Broomfield city
3.8 mi,
139°
• Northglenn city
8.6 mi,
132°
• Erie town
4.3 mi,
46°
• Louisville city
2.9 mi,
232°
• Superior town
5.4 mi,
215°
• Federal Heights city
10 mi,
153°
• Dacono city
9.4 mi,
59°
*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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