(You can apply for vehicle registration immediately after submitting the required documents to a county assessor’s motor vehicle office.) The vehicle must be titled in Idaho before it can be registered.The vehicle must belong to an Idaho resident or business.Search by county or city to find your local DMV county office. Please contact your local county office to see if they are open or if services are provided by appointment only. License Plates & Titles: Listed office hours may not be accurate due to COVID-19 concerns.