How old does your child have to be to be emancipated in the state of Indiana if the are a full time collage student living at home

Do you mean in terms of paying child support? In Indiana, the age is 21.
What Constitutes Emancipation To Release A Parent From A Child Support Obligation

In general terms of emanicipation in Indiana - emancipation cases are accepted on individual basis, however, very seldom does the court grant early emancipation rights to a minor.

Now the legal age of majority is 18, which is true in many states.

Since this person you are talking about is in college, he/she must be over 18 already. So he/she is an adult by the legal definition.

You can read through Indiana law:
Indiana Code 31-34-20
Scroll down to "Emancipation of child; findings; terms

You can become emancipated at any age after 16 as long as you have a job, enough money to talk care of yourself, and a place to live. There is no law in Indiana about not being or being able to be emancipated.

What exactly is this question regarding ? Is it about support or is it something else ?

This question is almost two years old I don't think the op is coming back. Should be closed.