This dissertation studies the interaction between the geography of the banking system, internal migration and remittances flows, and the use of financial services in the context of Indonesia. Chapter 2 studies the role of financial inclusion in the development process in Indonesia. The results suggest that financial access is significantly and positively associated with the regional economic level of development in Indonesia, controlling for the general economic circumstances and development level of the region. Chapter 3 examines how different aspects of location and economic geography may influence individuals' savings behavior in the formal banking system, controlling for individual-specific characteristics, with a clear focus on the differences between urban and rural areas in a developing country setting.Using data from the Indonesian Household Balance Sheet Survey 2015, the study applies multilevel logistic regression and finds that spatial factors and the general regional economic circumstances influence saving behaviour over and above individual characteristics. Chapter 4 investigates the relationship between the patterns of intra-country migration and individual remittances.By using multilevel models on detailed data of individuals from the Indonesia Family Life Survey 2015, the results show that domestic remittances flow from as well as towards migrants and depend on the destination of, and motive for, migration. Chapter 5 examines individual engagement with the formal banking system in relation to migration and domestic remittances. The study demonstrates that engaging in internal remittances -controlling for the destination of, and motive for, migration -is positively associated with use of financial services, as measured by savings. Moreover, the role of these variables depends on the position of the individual within the household.