My presentation today is based on an ongoing project on marriage pairing patterns in Indonesia. As a social demographer, I argue that the study of marriage pairing patterns can give us important insights into the processes of development and social change. Today, I am going to divide my presentation into three sections. First, I am going to give a very brief overview on the rational, the theoretical framework, and background of my study. Second, I am going to outline selected results from my analysis using the 2010 Indonesian Census data on marriage pairing patterns by ethnicity and religion. Lastly, I am going to highlight preliminary results from a short field study that I conducted in the middle of this year. Through this short presentation, I am hoping to get feedback and suggestions to improve an article based on the fieldwork (tentatively titled: Bibit, Bebet, Bobot: practices and attitudes to assortative mating in Jakarta). I am aiming to complete the paper and submit it for publication next year.