It varies; federal and state tax returns are processed by 2 separate entities so one being processed before the other is a usual occurrence no matter the order. Once accepted and approved, you may use the link below to check the status of your state refund. (Select your state from the list provided).
https://ttlc.intuit.com/questions/1899433-how-do-i-track-my-state-refund
and this link to track your federal refund: https://www.irs.gov/refunds