data californiaDataSF's mission is to empower use of data. We seek to transform the way the City works through the use of data. We believe use of data and evidence can improve our operationsCalifornia is a state in United States. The population in California was 39,431,263 in 2025. The median age in California was 37.6 in 2025. The median income in California was $41,901 in