Background and Aim: Aging is a physiological process that is an unavoidable property of life. Decline in some dimensions of aging such as activity, income, health care and changes in life style are associated with increased risk of physical and mental health disorders. The aim of this study was to investigate the association between living areas and the demographic characteristics of elderly people in Tehran.

Materials and Methods: A cross - sectional / analytical study was conducted. The sample was consisted of 5600 elderly people and data was collected by using a questionnaire All analyses were undertaken using SPSS (Version 11.5).

Results: The results of this study showed that more 50% of subjects were illiterate and 30.5% of the were in schooling level. 62% of them reported at least one disease. We found significant differences between residences of north and south regions of Tehran for many of investigated variables.

Conclusion: These findings indicated that we need to pay more attention to elderly status specially those who are living in southern region.