The GovLab’s Open Data Demand Assessment and Segmentation Methodology provides open data policymakers and practitioners with an approach for identifying, segmenting, and engaging with demand. This process specifically seeks to empower data champions within public agencies who want to improve their data’s ability to improve people’s lives. We narrowed our methodology to just six steps to enable open data champions to repeatedly map the current and future demand for open data within their country or city. Previous work examining the global impacts of open data at the GovLab and a six-month, hands-on project with the Inter-American Development Bank informed this methodology.