When to apply for citizenship after married 3 years?

[O753I951]

I have been married for 3 years already, however, i got my Green Card in April 2011. This April will be 3 years since having GC.

When can I apply for citizenship?

 

[nkm-oct23]

If you are married to a US citizen for 3 years and have held a green card for those 3 years, you can apply for citizenship 90 days before your 3 year anniversary. In your case, you can apply sometime this month.