Children, young people and families All children and young people in Sønderborg Municipality have the right to a life of well-being and a secure upbringing. Where to live Find a place to live in Sønderborg. You can rent, buy or build. Health and Health Insurance Information about emergency numbers, health and the Health Insurance Card CPR Number The CPR number is a personal identification number, and it is a legal requirement for all citizens in Denmark to have one. Bank account and digital signature When you live in Denmark, it is a good idea to have a Danish bank account, as it will be easier and faster to receive a salary and make transactions within Denmark. Mandatory digital post With a digital postbox, you can send and receive post quickly, securely and in an environmentally friendly manner, to and from public sector authorities, e.g. your municipality. Driving Licence It may be necessary exchange your foreign driving license with a Danish driving license if you wish to drive a vehicle in Denmark. Learn Danish Adult foreigners can receive free Danish lessons within their first three years of residing in Denmark. Income Tax When you come to Denmark to work, you must pay tax on your wages to the Danish state.