OVERALL CORE: PROJECT SUMMARY The Berkeley Population Center (BPC), now in its 18th year of operations, requests a five-year P2C renewal to continue its unique contributions to population dynamics research. Taking advantage of both faculty affiliate expertise as well as institutional initiatives, the five Primary Research Areas (PRAs) to be supported in the renewal period continue with the five existing, well-established, thematic areas of: (1) Formal Demography, (2) Data Science and Demography, (3) Population Health, (4) Reproductive Health and HIV, and (5) Family Policy. Collectively these are methodological and substantive areas in which Berkeley holds academic prowess, and to which BPC contributes essential knowledge to population science. BPC affiliates are drawn from Demography, Public Health, Economics, Sociology, Public Policy, Social Welfare and other disciplines. Early- stage investigators are warmly welcomed to the Center and offered extensive mentoring and financial assistance to advance their intellectual development and research activity, fostering the development of new cohorts of researchers, especially those from underrepresented backgrounds. The BPC offers staff support for logistics on all aspects of research administration, real and virtual meeting space, and shares information in various ways. BPC expands population research through expert consultation on every phase of scientific projects, plus easy access to newly expanded top-notch physical facilities and other resources such as a data and computing lab as well as high performance computing. These combined activities and initiatives converge into an interlocking hub of support for interdisciplinary collaboration, intellectual interaction, and new and novel research initiatives. The BPC is poised to continue to be a world leader in its contribution to innovative and interdisciplinary population research that will transform how contemporary population challenges are addressed and translated.