Can I get a green card if my 5 year old sister is born in the US? Currently both residing in the US?

Once your sister is 21 she can sponsor you. Then it will take another 11-12 years until you will get a greencard. Your dad, however - as long as he is legally in the US - has no such wait time. But your dad also has to wait until your sister is 21 years.

Also your sister has to earn 125% above the poverty level for the family size which includes everybody she sponsors. So if she isn't making any money at 21 she can't sponsor anybody until she does.

Getting a degree and getting a work visa is probably more realistic.

It takes over ten years to get a sibling visa, so don't expect to be able to stay in the US while you get it.

And if you are on a student visa, what visa is your dad on? How did you get a student visa if your sister was born in the country five years ago?

Er, yes and no. Any siblings who are US citizens may petition for you to get a Green Card, but only if they're over 21. Waiting the 16 years for your sister to come off age is not a practical option, I imagine. (The same applies if your parents wanted to get a Green Card through their daughter).

When your sister becomes 21 years of age, she can file Petition for you. Once her petition is approved, you will get Priority Date. When your PD becomes before the cut off date according to monthly Visa Bulletin, you can apply immigrant visa or green card.

http://www.uscis.gov/portal/site/uscis/menuitem.eb...

Currently waiting time for PD for the siblings of US Citizen is from 11 years to 15 years (if you are Mexico citizen) or 23 years (if you are Philippines citizen) in addition to waiting for 18 years until your sister becomes 21 years of age.

http://travel.state.gov/visa/bulletin/bulletin_560...

Your looking at least at 26 years before you would get a greencard through your sister. If you are from outside Europe your looking at 30-40 years.

Does your 5 year old sister have a job, with a salary that is enough to support you? Can your 5 year old sister enter into a legally binding contract with the government promsing that she will be financially responsible for you for the next 10 years?

In other words, no.

You need to wait until she is 21