Formal:
* J'habite à [city/town/region]. (I live in [city/town/region].)
* Je réside à [address]. (I reside at [address].)
Informal:
* J'habite [city/town/region]. (I live in [city/town/region].)
* Je suis de [city/town/region]. (I'm from [city/town/region].)
Remember to replace the bracketed information with your actual location.