The US city data database has been upgraded to a much better one. It contains many more cities in addition to 3,140 counties which the old version didn’t have.
It has also come with 10 times more statistic fields – 116 in total. A very comprehensive database of US – state – county- city statistical data.
Check it out here: http://www.thedataplanet.com/databases/uscitydata-database.html
And see it for yourself. And here are the samples in CSV and Excel: http://www.thedataplanet.com/sample/uscitydata/
Anyone who purchased it at $89.95 would be able to download this upgraded version for free.