- Kalmar is a city in the southeastern part of Sweden, located on the coast of the Baltic Sea. It is the capital of the Kalmar County and has a population of about 36,400 people. The city has a rich history and is known for its well-preserved medieval architecture, including the Kalmar Castle, which dates back to the 12th century. Kalmar is also popular among tourists for its beautiful beaches, charming old town, and proximity to the island of Öland. The city has a thriving cultural scene, with numerous museums, galleries, and annual music and art festivals. Additionally, Kalmar is home to the prestigious Linnaeus University, which attracts students from all over the world.