How long you have to wait after you get your green card to apply for citizenship?

In order to apply for U.S. Citizenship you need to:

1) Be a lawful permanent U.S. resident.

2) Be 18 years of age or older.

3) Be a permanent resident for no less than 5 years.

4) Have resided for no less than 3 months in the state where the petition to become a citizen was filed.

5) Be physically present in the U.S. for at least one half of the 5 years, with no absences longer than 6 months.

6) Have resided continuously within the U.S. from the date the petition was filed to the time of admission to citizenship.

7) Have been a person of good moral character for the 5 years of residence.

8) Have an Elementary level of reading and writing English.

9) Having a basic knowledge of the fundamentals of U.S. government and history.