Short answer: You don't.
Long answer: You petition and pester Zynga until they release an update that includes a function to change names.
You cannot change your town's name. Once you've established your town when you first start playing the Cityville game, you only have one chance to pick a good name for your town/city, and you're stuck with it for the rest of the time you are on there.
build a clerk's office (it gets put in your inventory at level 12) and get 5 friends to "sign" a thing and there should be a button that says change city name
At the bottom of the page there is a spot where you can change the language. On the new cityville there's a little world/globe symbol at the far right of the menu bar. click that and select your language :)
There are no cheats for CityVille, look up CityVille glitches though.
CityVille happened in 2010.
cityville
dr mayhem
CityVille Hometown was created in 2011.
CityVille Hometown happened in 2011.
CityVille was created on 2010-12-02.
Old New York, tottaly new... and old
Yes, it is. Unless you buy CityVille Cash.