I guess it's been a while since I last looked at Census Bureau redistricting data because I was briefly surprised to find that the data are only available state by state. If you wish to view the data for the nation as a whole you'll need to download the table you're viewing and do the addition yourself. This is true for the redistricting data in Censuses 2000 and 2010, each of which is available from American Factfinder.
March 2011 Archives
The Census Bureau does not publish data by Zip Code. Zip Codes are mail delivery codes created at and for the convenience of the U.S. Postal Service. Zip Codes are not consistent geographic units and the Census Bureau has to have consistency in a geographic unit in order to create meaningful statistics.
However, the Census Bureau did create "Zip Code Tabulation Areas" for Census 2000 which approximate real Zip Codes. Data from Census 2010 will eventually be available at the ZCTA level too, but the American Community Survey will not. As the American Community Survey is now the only source of nationwide socio-economic statistics for small geographic areas, this means users who need data organized by Zip Code will need to look elsewhere.
In 2010, there were only 10 questions covering:
- how many people live here
- how old they are
- what sex they are
- how they are related
- how they define their race
- how they define their ethnicity
- whether their home is owned, rented, or no payment required
- whether the people in this house sometimes live elsewhere (college, nursing homes, prison, military, etc)
For recent data on any other socio-economic topics, users must now use the American Community Survey.