This paper explores how statistical techniques can be leveraged in religion, with a particular focus on the Catholic Church. An overview of census from a biblical perspective has been given. While religion is often perceived as belonging to the realm of faith and spirituality, religious institutions increasingly depend on empirical data to inform their decision-making processes. Using both descriptive and inferential approaches, this study demonstrates the role of statistical methods in enhancing pastoral planning, resource allocation, financial stewardship, and youth engagement. The analysis begins with a broad overview of religion and statistics, moves into global and East African contexts, and narrows to Kenya, the Catholic Diocese level, and the administrative unit of Parish. Tables and illustrative data provide practical examples of how statistics can guide decisions. The paper concludes by emphasizing that integrating statistical methods in religion does not undermine faith but strengthens the capacity of institutions to fulfill their mission effectively