One of the concepts used in the immigration literature to analyze migration flows and patterns is the concept of network. The purpose of this article is to investigate the role and effectiveness of different types of networks in the retention of migrants in Assaluyeh and Kangan. The present study is a descriptive, survey research study that uses a structured questionnaire to collect data. The sample size was 654. The results showed that kinship, family and friendship networks have a significant impact on the movement of immigrants to the destination community and their impact decreases over time after migration. These networks are effective in shaping subsequent migration flows, but will be less effective in determining the shelf life of migrants, especially migrants such as labor migrants who are exposed to new environments, conditions, and relationships. The results indicate that, among the pre-migration networks, the family network and, among the post-migration networks, the intra- and inter-organizational networks have significant effects on migrants’ staying. Also, the size of post-migration networks has a more significant effect on staying, i.e. migrants with a larger networks stay longer in the destination. In general, social networks should play an important role in the residential stability of labor migrants in the South Pars industrial zone. According to the results of the research, optimizing the destination in terms of welfare facilities, providing health and medical facilities, optimizing organizational housing will affect the stay of immigrants in industrial areas.