Sønderborg Municipality is located in the southern part of Denmark, specifically in the region of Southern Denmark. It encompasses the town of Sønderborg and several surrounding areas, including Nordborg and Guderup. The municipality is known for its beautiful coastline along the Little Belt and its rich history, including the historic Sønderborg Castle. The area is characterized by a mix of urban and rural landscapes, with various recreational opportunities such as parks and beaches. Sønderborg Municipality also has a strong focus on sustainability and community development, making it an attractive place for residents and visitors alike.