Last official estimated population of Mount Ayr town (Newton County**, Indiana state) was 121 (year 2014)[1]. This was 0% of total US population and 0% of total Indiana state population. Area of Mount Ayr town is 0.2 mi² (=0.5 km²)[6], in this year population density was 691.43 p/mi². If population growth rate would be same as in period 2010-2014 (-0.21%/yr), Mount Ayr town population in 2024 would be 119*.
Historical population of Mount Ayr town for period 1910-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1910-1920] -1.48 %/yr
[1920-1930] +0.82 %/yr
[1930-1940] -0.42 %/yr
[1940-1950] +0.7 %/yr
[1950-1960] -1.75 %/yr
[1960-1970] +0.42 %/yr
[1970-1980] +0.65 %/yr
[1980-1990] -3.11 %/yr
[1990-2000] -0.27 %/yr
[2000-2005] -1.69 %/yr
[2005-2010] -2 %/yr
[2010-2014] -0.21 %/yr
• Rensselaer city population
6.9 mi, 
97°
• De Motte town
17.9 mi, 
17°
• Kentland town
14.5 mi, 
212°
• Remington town
15 mi, 
149°
• Morocco town
7.9 mi, 
266°
• Goodland town
13 mi, 
179°
• Brook town
6.9 mi, 210°
• Hopkins Park village
17.9 mi, 
296°
• Donovan village
17.1 mi, 
254°
• Iroquois village
17.2 mi, 
240°
*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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