This site is really neat. Not only can you find out information about the city you live in, but if you are moving, you can check out your new hometown too!
There are a couple of ways to navigate. You can check out the links: Top 100 Lists where you can find lists of the top 100 cities and pertinent information like the highest income, the least crime, the newest houses, the most females, the shortest commute, the best educated residents, etc. You can also use the search engine to look up your current city.
So, go ahead and check out your city or your future city, for that matter by clicking this link: http://www.city-data.com.