Prevention Institute is a US based organization that “move[s] beyond approaches that target individuals, one person at a time, to create systematic, comprehensive strategies that change the conditions that impact community health.” From an approach of prevention, it maintains a database of research, publication lists, and information on “injury and violence prevention, traffic safety, health disparities, nutrition and physical activity, and youth development.”
See http://www.preventioninstitute.org (United States)

Public Health Agency of Canada is an agency of the government of Canada created to renew the public health system in Canada and support a sustainable health care system. Its mission is “to promote and protect the health of Canadians through leadership, partnership, innovation and action in public health.” It hosts a large collection of reports and articles related to health promotion.
See http://www.phac-aspc.gc.ca/new_e.html (Canada)

Statistics Canada “works in partnership with all sectors of government, the economy and society to identify and fulfill the information requirements of today and tomorrow. Statistics Canada's data collection includes major themes such as: Agriculture, Environment, Health, Manufacturing, Prices, Primary industries, Social conditions, and Travel and Tourism.” From the themes, Statistics Canada generates publications and statistical reports. Every five years, the Census provides an updated national portrait on areas such as work life, family structure, and ethnicity.
See http://www.statcan.ca (Canada)

World Health Organization (WHO) is the United Nations’ specialized agency for health. “Its objective as set out in its constitution is the attainment by all people of the highest level of health.” Health is defined as physical, mental, and social not just the absence of disease. The web site includes FAQs, some reports and links to other reports and information.
See http://www.who.int/en (International)