Delaware Change of Address is a service provided to residents of Delaware to update their address with state government agencies. This service enables individuals to easily and securely change their physical address, mailing address, or both. It is available to both citizens and non-citizens, and is free of charge. There are three types of Delaware Change of Address: physical address change, mailing address change, and combined address change. The physical address change is used to update the street address on file with the state, while the mailing address change is used to update the mailing address on file with the state. The combined address change is used if both the physical and mailing addresses need to be changed.