Last official estimated population of Diagonal city (Ringgold County**, Iowa state) was 328 (year 2014)[1]. This was 0% of total US population and 0.01% of total Iowa state population. Area of Diagonal city is 0.9 mi² (=2.3 km²)[6], in this year population density was 362.03 p/mi². If population growth rate would be same as in period 2010-2014 (-0.15%/yr), Diagonal city population in 2026 would be 322*.
Historical population of Diagonal city for period 1900-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1900-1910] +2.88 %/yr
[1910-1920] +1.12 %/yr
[1920-1930] +0.14 %/yr
[1930-1940] +0.44 %/yr
[1940-1950] -2.42 %/yr
[1950-1960] -0.63 %/yr
[1960-1970] -2.99 %/yr
[1970-1980] +1.02 %/yr
[1980-1990] -1.93 %/yr
[1990-2000] +0.46 %/yr
[2000-2005] +0.76 %/yr
[2005-2010] +0.37 %/yr
[2010-2014] -0.15 %/yr
• Mount Ayr city population
8.6 mi, 
140°
• Lenox city
12.4 mi, 
293°
• Clearfield city
7.4 mi, 
264°
• Tingley city
8.2 mi, 
69°
• Arispe city
11.3 mi, 
34°
• Shannon City city
7.3 mi, 33°
• Ellston city
12.4 mi, 
80°
• Benton city
7.4 mi, 
187°
• Maloy city
10.3 mi, 
200°
• Delphos city
10.2 mi, 
179°
*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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