Does anyone know where I could find demographic data on cities in the US that I can add to my site as a feed? I know that there is a way to use the US census (http://factfinder.census.gov/servlet/DatasetMainPageServlet?_program=DEC&_lang=en), but I don't think I'm good enough at coding yet to figure that out.
Run a search on "internet content providers" or "website content", there are companies that provide live and other types of data feeds, YellowBrix is one of them I believe, maybe other members will provide more links or sources for you.
I think it will be very difficult to get free data because it may not be accurate and precise so yellowbrix is good option.