American Diabetes Association
This organization provides Diabetes Statistics including the prevalence, complications, and financial costs.

Centers for Disease Control and Prevention

Diabetes Data and Statistics
Fact Sheets and public health surveillance (disease tracking) on diabetes and its complications. Includes national, state, and county level information.

Diabetes FastStats
Quick statistics on diabetes with links to relevant tables from multiple publications and surveys.

International Diabetes Federation
The Diabetes Atlas consists of worldwide maps and data tables on prevalence and related topics.

The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Health information on diabetes including estimates and statistics for children, adults, and select demographic groups. 

Diabetes in America is an online book providing an assessment of epidemiologic, public health, and clinical data on diabetes and its complications in the United States.

World Health Organization (WHO)
Global information on diabetes includes fact sheets, world and regional prevalence estimates and projections.