The resources on this page can help you identify a specific dataset to use for your research. Many of these resources will offer an Excel spreadsheet (.xls) to download in order to view the data. Look for the "codebook" and other documentation to help you make sense of the dataset and what each variable is measuring.
These links point to just a few of the many resources offering statistics (and raw data). For a larger list, check out the Tri-Co Libraries Census and Statistics Guide.