What it is
Type in your zipcode to find city demographics information.

Pros
Nice interface and a good snapshot.

Cons
This information is from the 2000 census, so it may not be current.

Philly Connection
Use it for your Philly zip code.

What you can learn from it
Search by ZIP code to see demographic information in your area, and compare it to others: income levels, racial breakdown, unemployment, education level, marital status, etc