1Faculty member of Payam-e Nour University, Ardabil
2M.A. in Psychology, Islamic Azad University, Tabriz Branch & Faculty member of Payam-e Nour University, Ardabil
3Ph.D. Student of Political Sociology, Islamic Azad University, Science and Research Branch, Tehran
Family as the smallest and the most fundamental structure of the society forms the basis and foundation of the society and in the meantime marriage itself can be considered as the basis and foundation of the family. Considering the importance of marriage, changing and transitions and creating disorder in the process of the marriage is a social problem which may be affected both the basis of the family and the basis of the society. Increasing the age of marriage is one of these problems that many of the societies are involved in this problem. Taking this point into account, the main aim of the study is to recognize the effective factors on increasing the age of marriage among the girls. The method used in this study was measurement that the required data collected through the questionnaire. The samples of this study were girls between 25 to 40 years old in Givi city (urban districts 1&2). The main subjects were 110 girls which gathered by Cochran formula. Also, sampling process achieved randomly and data analysis unit was based on individual. Data was analyzed in two descriptive and inferential levels considering the symmetrical data. The results showed that there was no relationship among economical-social status, residential area, and marriage criteria with increasing the age of marriage in Givi city's girls. In opposition, there was a meaningful relationship between hindrance to the culture and increasing age of marriage. The results show that among the factors such as position, residential area, marriage criteria, hindrance to the culture, the only factor that affects the increase in the age of marriage was hindrance to the culture.