Objectives Population aging is taking place in developed countries and has caused some concerns in developing countries. Fallowing UAE and Bahrain, Iran has the third highest rate of population aging in the world and this increases the importance of the issue for policymakers. We aimed to review all the related studies to narrow on the economic aspects of the aging population.
Methods & Materials To this end, methodology and result of vast empirical literature, up to 2012, has been summarized to assess the main effect of aging on macroeconomic indicators. Most of the collected studies related to the developed countries, due to the novelty of this phenomenon.  
Results Findings showed that the main economic sectors heavily influenced by the growing share of aged peoples. These sectors are included labour market, physical and financial markets, pensions, human capital stock, consumption and saving, public sector budget which all consequently affect economic growth.  
Conclusion It is hoped that this study will be a small step towards a scientific look at the economical aspect of ageing phenomenon and will stimulate further investigation.