Stockholm is the capital city of Sweden. It's situated on the eastern coast of Sweden, spanning 14 islands where Lake Mälaren flows into the Baltic Sea. Stockholm is among the world's most beautiful cities and one of the most cosmopolitan. It is the country's economic, transportation, and cultural centre. Since the Viking Age, Stockholm is renowned for influencing other cities around the world. It is famous for its stunning medieval buildings and modern structures that stand side by side to complement each other. Some of the places that make it famous include the amazing ancient buildings, the Royal Palace, the Vasa Museum, Gamla Stan (The Old Town), and the modern district of Norrmalm.

Census in Sweden is conducted continuously by Statistics Sweden. According to the latest data, Stockholm had a population of 2,377,081 in 2020. Compared to other cities in Sweden, Stockholm is considered to be more diverse. According to the data, 78% of the population is of Swedish descent, while the rest is made up of various ethnic and national backgrounds. When it comes to religious beliefs, Stockholm, similar to the rest of Sweden, is diverse with most people identifying themselves as Christian, Muslim, Jewish, and Buddhist. According to the data, 58.7% people in Stockholm identified themselves as Christian, 5.6% as Muslim, 0.3% Jewish, 0.2% Buddhist and 34.2% declared that they followed no religion or didn't answer. As one of the most diverse cities in the Nordics, Stockholm houses over 2 million residents, who collectively speak over 100 languages, including Swedish, Finnish, English, and various others. Stockholm is home to one of the world's longest art galleries. The Stockholm subway system is often referred to as the world's longest art gallery, with more than 90 of the network's 100 stations decorated with sculptures, mosaics, paintings, installations, engravings and reliefs by over 150 artists.

The Municipality of Stockholm is an administrative unit defined by geographical borders, consisting of the City of Stockholm. The municipality is governed by the City Council, which is elected every four years. The council is responsible for the municipal administration, and its decisions are implemented by the various committees and boards. The Mayor of Stockholm, who is appointed by the City Council, is the highest-ranking city official and represents the city as a whole. The municipality is responsible for public services such as education, social services, elderly care, urban planning, environmental issues, infrastructure and emergency services.

Stockholm has always been a commercial city and today enjoys the status of having one of the largest city economies in the Nordics. The city thrives in trade and commerce and has a vibrant culture seeped in commerce. It has a GDP of over SEK 1,000 billion, which is about 30 percent of Sweden's total GDP. The size of its economy is larger than that of several European cities. The Port of Stockholm is one of the largest ports in the Baltic Sea, handling over 6 million passengers and 9 million tons of goods every year.

The City of Stockholm has an ambitious plan for its infrastructure. Aiming to become a world-class city, it identifies a range of infrastructure priorities, from new energy, water and sewage infrastructure, to enhanced digital connectivity and new subway, rail and road schemes. Some of the investment is provided by the private sector, through the privatized utilities. This has generally worked well in Stockholm, although business is particularly concerned at the lack of capacity in digital infrastructure. The city also has a well-developed public transportation system, including buses, trams, and an extensive subway network, known as the Tunnelbana.