The Hardin County Clerkâs Office provides many services to the people of Hardin County. Whether it is recording deeds, mortgages and other legal documents, or vehicle transactions and registrations; we are here to serve the public in a business friendly and efficient manner. We have developed this app to provide mobile access to some of our high demand services. You can use this app to renew your vehicle registration from your phone or research the hundreds of thousands of legal recordings we have here. You can also use this app to call our different departments, or use the map feature to come and visit us in person!