There is probably a link on the Purdue website that describes how applicants are classified as in-state (or not) for tuition purposes; so I would search for residency classifications, or something along those lines. Because you are currently not a resident of Indiana – and most states require residence for a certain period of time prior to application – you likely would not be classified as an in-state applicant. But check the written residency requirements, or call the admissions office about it.