Background: The population of Iran is rapidly aging, and there is no specific housing policy and urban space planning for the elderly. It is vital and necessary to consider urban space and residential environment in order to meet elderly's different needs, preferences, desires, and aspirations to maintain and improve their quality of life (QOL). Aim: This study aims to evaluate the aging urban space and residential preference because urban space situation influences the residential satisfaction that leads to the quality of life. Methods: In this study, 400 old adults residing in Karaj, Iran were surveyed. Independent sample t-test was used to examine the relationship between socio-demographic factors and urban space preferences. Results: There are no differences among genders for urban space preferences, but there are differences in marital status for urban space preferences among elderlies in Karaj, Iran. The results also showed that most participants emphasized Convenience, Accessibility followed by Safety, and Citizen Participation. Conclusion: Marital status was found to play a significant role in urban space preferences. 

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