You can apply for U.S. citizenship after five years of having a green card, or three years if you're married to a U.S. citizen.

If you’ve had your green card for five years, or three if you're married to a U.S. citizen, you’re eligible to apply for naturalization.

Most green card holders can apply for citizenship after five years, but if you’re married to a U.S. citizen, you might qualify after just three.