In order to be eligible for citizenship, In order to be eligible for citizenship, you must meet the following criteria: being at least 18 years old, having been a lawful permanent resident for at least five years, having been physically present in the United States for at least 30 months out of the past five years, and demonstrating good moral character. There are other potential pathways to eligibility such as being the spouse of a U.S. citizen or the parent of a U.S. citizen under 21 years old.