It varies state to state. In michigan most doctors will not due that procedure until you have reached the age of 21 and 3months and or have at least 3 children. So consult your doctor.
I'm 19 and already have one child now. And I'm pregnant with my second. After I have this one can I get my tubes tied. I live in North Carolina.
They usually like to wait until you have had children or are over 25.