Algiers is the capital city of Algeria, situated on the country’s Mediterranean coast. It is among the oldest cities in North Africa and one of the most culturally vibrant. It is the country's economic, transportation, and cultural centre. Since the Middle Ages, Algiers has been known for its influence on Mediterranean trade and culture. It is famous for its fascinating blend of Moorish architecture and French colonial buildings. Some of the places that make it famous include the ancient Casbah, Martyrs' Square, the Bardo Museum, the Grand Post Office, and the Botanical Garden of Hamma.

Census in Algeria is done approximately every 10 years, with the last one conducted in 2008. The next census is expected around 2028. According to the 2008 census, Algiers had a population of 5,059,135. Compared to other cities in Algeria, Algiers is considered to be more diverse. As one of the most diverse cities in North Africa, Algiers houses over 5 million residents, who collectively speak various languages, including Arabic, French, and Berber. The Casbah of Algiers, a UNESCO World Heritage Site, is a medieval citadel overlooking the city and the sea. It is said to inspire many artists, musicians, and writers. Martyrs' Square, another iconic landmark, is a tribute to the Algerian war for independence.

Algiers is governed by a governor who is appointed by the president. The governor presides over the executive council, which is responsible for overseeing the city's administration, planning, and economic development. On the other hand, local administration is carried out by the local commune councils. These councils are responsible for local services such as local planning, schools, social services, local roads and refuse collection. The members of these councils are elected every five years by local residents.

Algiers has always been a commercial city and today it is one of the largest economies in North Africa. The city thrives in trade and commerce, with a vibrant culture steeped in commerce. It contributes significantly to Algeria's GDP. Algiers also boasts a busy port that handles a significant tonnage of cargo every year, serving as a crucial hub for Mediterranean shipping.

Algiers has made significant strides in infrastructure development in recent years. The city has seen the construction of new roads, bridges, and public buildings. The Algiers Metro, opened in 2011, has significantly improved transportation within the city. The city's infrastructure plan also includes investments in energy, water, and sewerage infrastructure, digital connectivity, and further expansion of the public transportation network. The government has also invested in improving the city's digital infrastructure, with an increasing number of residents and businesses having access to high-speed internet.