California Statistics and Data

• RAND California
• California Field Opinion Polls

United States Statistics and Data

• US Census Bureau
• FedStats

World Statistics and Data

• CIA World Factbook
• Economist Intelligence Unit

Health Statistics and Data

• Center for Disease Control
• National Institute of Health
• World Health Organization

Public Opinion Statistics and Data

• California Field Opinion Polls
• Roper Polls

Social & Political Sciences Statistics and Data

• ICPSR (Inter-University Consortium for Political and Social Research)
• SSRIC (Social Science Research & Instructional Center)