In Indiana, its considered child molestation to have sex with a child younger than 14, who cannot consent to sex. In most circumstances, its also illegal for someone older than 18 to have sex with someone younger than 16, under the states laws on sexual misconduct with a minor.

Can a 27 year old date a 17 year old in Indiana?

Yes, consensual sex between a 27-year-old and a 17-year-old would NOT constitute criminal behavior.

Can a 17 year old date a 24 year old in Indiana?

Dating is not illegal. Sexual activity might be. The age to consent to sexual activity is normally 16 in Indiana, with some exceptions based on the age of the older person and her relationship to the younger person.