The Office of Policy Analysis helps advance the mission of the Department of the Interior through policy analysis, economic analysis, and cross-department program coordination. This means determining how policy decisions affect the American people; the Nation's lands, waters, and resources; and our economy. We provide cross-cutting analysis and coordination to support Departmental leadership and decision-making across a highly decentralized agency. We evaluate Interior programs, address policy issues, and conduct relevant economic analyses on behalf of Departmental leadership. PPA also coordinates interagency and multi-bureau programs, including the Department's ecosystem restoration program, invasive species, and statistical policies. We help ensure decisions made across a large and highly decentralized agency are effective—all to serve the Department, the Nation, and you. Learn more about our Mission, Vision, Goals, and Core Values. Our staff come from many different professional and personal backgrounds. Learn more about who we are. Contact Us Main Phone: 202-208-5978 Fax: 202-208-4867 Mailing Address: 1849 C Street NW Mail Stop 3530 Washington, DC 20240 Feature photo: The Office of Policy Analysis is based out of the Stuart Udall (Main Interior) Building in Washington, DC.