Last official estimated population of St. Marys city (Warren County**, Iowa state) was 127 (year 2014)[1]. This was 0% of total US population and 0% of total Iowa state population. Area of St. Marys city is 0.1 mi² (=0.4 km²)[6], in this year population density was 907.14 p/mi². If population growth rate would be same as in period 2010-2014 (0%/yr), St. Marys city population in 2026 would be 127*.
Historical population of St. Marys city for period 1880-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1880-1930] +1.88 %/yr
[1930-1940] -0.58 %/yr
[1940-1950] +0.58 %/yr
[1950-1960] +0.55 %/yr
[1960-1970] +1.11 %/yr
[1970-1980] +0.56 %/yr
[1980-1990] 0 %/yr
[1990-2000] +1.9 %/yr
[2000-2005] -0.6 %/yr
[2005-2010] -0.47 %/yr
[2010-2014] 0 %/yr
• Indianola city population
9.5 mi, 
66°
• St. Charles city
4.1 mi, 
250°
• New Virginia city
8.7 mi, 
179°
• Truro city
8.9 mi, 
220°
• Martensdale city
4.6 mi, 
356°
• Cumming city
12.4 mi, 
354°
• Patterson city
8 mi, 
290°
• East Peru city
11.6 mi, 
241°
• Spring Hill city
8.4 mi, 
31°
• Bevington city
4.5 mi, 
324°
*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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