Comprehensive summary of statistics on the social, political, and economic conditions of the United States, from 2013 to the present. Volumes covering 1879-2012 are on the US Census site.
Some data sets are readily available online. However, specific demographic data are often only offered by specific companies for a high price, and some historical data can be difficult to locate. Below are some freely available online sites with select industry data.
The UCLA Library does not license databases and other online resources that can't be accessed by IP address for the campus community, that require a unique individual password, or are prohibitively restrictive or costly. Some industry data tools and directories are in this category, including: