The Roper Center archives datasets from thousands of surveys with national adult, state, foreign, and special subpopulation samples. iPOLL includes data survey results from academic, commercial and media survey organizations such as Gallup Organization, Harris Interactive, Pew Research Associates, and many more.
Subject covered include: economic issues; education; elections; health issues; international affairs; news media; personal characteristics, beliefs, and lifestyles; polls and polling; science and technology; social issues; and US defense and foreign policy. Coverage: 1935-present
The World Development Indicators are compiled from officially-recognized international sources providing 331 indicators, from agriculture to urban development, covering 209 countries. WDI also includes development objectives, results, disbursements, maps, reports, and more for over 11,000 lending projects in 100+ countries from 1947 onwards. Coverage: 1960-present