Last official estimated population of Bertram city (Linn County**, Iowa state) was 300 (year 2014)[1]. This was 0% of total US population and 0.01% of total Iowa state population. Area of Bertram city is 1.7 mi² (=4.3 km²)[6], in this year population density was 178.78 p/mi². If population growth rate would be same as in period 2010-2014 (+0.51%/yr), Bertram city population in 2026 would be 319*.
Historical population of Bertram city for period 1880-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1880-1920] -0.99 %/yr
[1920-1930] +0.61 %/yr
[1930-1940] -1.24 %/yr
[1940-1950] +3.58 %/yr
[1950-1960] +2.88 %/yr
[1960-1970] +0.4 %/yr
[1970-1980] +2.01 %/yr
[1980-1990] +0.09 %/yr
[1990-2000] +2.05 %/yr
[2000-2005] +0.96 %/yr
[2005-2010] +0.98 %/yr
[2010-2014] +0.51 %/yr
• Cedar Rapids city population
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278°
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6.9 mi, 
338°
• Hiawatha city
10.6 mi, 
311°
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6.2 mi, 
107°
• Solon city
10.2 mi, 
168°
• Lisbon city
7.8 mi, 105°
• Ely city
5.5 mi, 
207°
• Springville city
8.4 mi, 
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• Shueyville city
9.3 mi, 
219°
• Martelle city
10.4 mi, 
62°
*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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