1. 
   demographer
   [n] - a scientist who studies the growth and density of populations and their vital statistics
   Found op http://www.webdictionary.co.uk/definition.php?query=demographer
   
   
2. 
   demographer
   demographist noun a scientist who studies the growth and density of populations and their vital statistics
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=demographer
   
   
3. 
   demographer
   demographer 1. Someone who studies human populations, including their size, growth, density, and distribution, and statistics regarding birth, marriage, disease, and death. 2. One who specializes in human statistical data.
   Found op http://www.wordinfo.info/words/index/info/view_unit/628/
   
   
4. 
   demographer
   1) Demographist 2) Population scientist 3) Sociologist
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/demographer/1
   
   

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