Last official estimated population of Troy city (Miami County**, Ohio state) was 25,564 (year 2014)[1]. This was 0.008% of total US population and 0.22% of total Ohio state population. Area of Troy city is 12.0 mi² (=31 km²)[6], in this year population density was 2,134.25 p/mi². If population growth rate would be same as in period 2010-2014 (+0.5%/yr), Troy city population in 2024 would be 26,874*.
Historical population of Troy city for period 1810-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1810-1820] +5.05 %/yr
[1820-1830] +5.57 %/yr
[1830-1840] +10.36 %/yr
[1840-1850] +3.77 %/yr
[1850-1860] +3.06 %/yr
[1860-1870] +1.29 %/yr
[1870-1880] +2.38 %/yr
[1880-1890] +1.68 %/yr
[1890-1900] +2.73 %/yr
[1900-1910] +0.4 %/yr
[1910-1920] +1.72 %/yr
[1920-1930] +1.8 %/yr
[1930-1940] +1.12 %/yr
[1940-1950] +0.95 %/yr
[1950-1960] +2.53 %/yr
[1960-1970] +2.3 %/yr
[1970-1980] +1.01 %/yr
[1980-1990] +0.28 %/yr
[1990-2000] +1.23 %/yr
[2000-2005] +1.53 %/yr
[2005-2010] +1.02 %/yr
[2010-2014] +0.5 %/yr
• Piqua city population
7.6 mi, 
351°
• Tipp City city
5.6 mi, 
160°
• Union city
9.3 mi, 
203°
• West Milton village
7.9 mi, 
223°
• Covington village
8.6 mi, 
307°
• Pleasant Hill village
6.6 mi, 
275°
• Fletcher village
9.1 mi, 
39°
• Laura village
10.3 mi, 
252°
• Casstown village
5 mi, 
80°
• Ludlow Falls village
6.9 mi, 
244°
*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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