Many startup ideas rely on open data sources for apps and visualizations. Here’s a working list of open data sets available for Sacramento, the County, the State, and more.

City Open Data

City of Sacramento Open Data Portal

 

County Open Data

Sacramento County Open Data Portal

 

California State Open Data

Data.CA.gov

CA GreenGov Open Data Portal

California Health and Human Services (CHHS) Open Data

California State Board of Equalization

 

Federal Open Data

Data.gov

Datasets for US States

US Government Agencies and Subagencies

Census Bureau

National Climatic Data Center

 

World and Health Data

Global Health Facts

UN Data

World Health Organization

Organization for Economic Cooperation and Development

World Bank

World Bank – Health, Nutrition and Population Data and Statistics

The Guardian Data Blog

Freebase

 

Geography

Census Bureau TIGER (Topologically Integrated Geographic Encoding and Referencing) Maps & Data

Geo Commons

Open Street Map

Amazon Public Data Sets

 

Other Open Data

http://enigma.io/

http://www.opendatanetwork.com/

Great Github list of public data sets