For the full (non-demo) version of CDXZipStream, available data feeds listed in the main interface are:
CDXCBSA (Core Based Statistical Area)
CDXACSCBSA (American Community Survey Feeds)
Please see Data Feeds and Available Fields for more information.
Also note that you can purchase a Canadian database of postal codes that is accessible through CDXZipStream right-click functions. However, it is not a separate data feed listed in the CDXZipStream main interface here.
The demo version of CDXZipstream contains example data for all thirteen premium datafeeds. While the demo contains full zip code data for all cities and states it only contains limited demographic information for a select number of zip codes and other indices. You can select the data feed as shown below: