IPUMS Data
From the IPUMS-CPS home page:
"IPUMS-CPS is a project dedicated to integrating and disseminating
data from the Current Population Survey. Its goals are to:
- Collect and preserve data and documentation
- Harmonize data to be compatible over time and with IPUMS-USA
- Disseminate the data absolutely free!"
For step-by-step instructions (including video tutorials), please browse to How to Access IPUMS Data.
DataFerret
From the Introduction to the User's Guide:
"DataFerrett is a web-based data analysis tool developed by the US Census Bureau designed to equip users with the ability to analyze large amounts of data and create customized reports to support decision making. . . . DataFerrett draws upon the DataWeb, a network of public and private databases providing a vast amount of statistical information that is constantly updated and expanded."
Browse to DataFerret
For documentation and more information, see this Directory of DataFerrett Data (pdf) and the DataFerret Uer's Guide (pdf).
Google Public Data
Browse to google.com/publicdata
For suggestions, see Using Google to Search Public Data (.docx) (pdf)