Last official estimated population of West Mifflin borough (Allegheny County**, Pennsylvania state) was 20,175 (year 2014)[1]. This was 0.006% of total US population and 0.16% of total Pennsylvania state population. Area of West Mifflin borough is 14.5 mi² (=37.6 km²)[6], in this year population density was 1,390.80 p/mi². If population growth rate would be same as in period 2010-2014 (-0.17%/yr), West Mifflin borough population in 2024 would be 19,834*.
Historical population of West Mifflin borough for period 1940-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1940-1950] +7.54 %/yr
[1950-1960] +4.26 %/yr
[1960-1970] +0.28 %/yr
[1970-1980] -0.64 %/yr
[1980-1990] -0.98 %/yr
[1990-2000] -0.66 %/yr
[2000-2005] -1.2 %/yr
[2005-2010] -0.68 %/yr
[2010-2014] -0.17 %/yr
• Baldwin borough population
2.6 mi, 
305°
• McKeesport city
3.4 mi, 
108°
• Munhall borough
2.5 mi, 
5°
• Duquesne city
3.1 mi, 
69°
• Glassport borough
2.4 mi, 
155°
• Port Vue borough
2.1 mi, 
129°
• Liberty borough
3.3 mi, 
138°
• West Homestead borough
2.5 mi, 
354°
• Dravosburg borough
0.9 mi, 
121°
• Whitaker borough
3.1 mi, 
19°
*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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