|— Capital City —|
|The Capital City of Demetrios|
|Nickname(s): The Blue City|
|Motto: Unissez-vous Avec Le Bleu Profond|
|Founder||Lucien Agrilo Bonnin|
|Capital District||Capital Village|
|- Type||Agrilos Metropolitan Government|
|- Body||City Council|
|- Mayor||Marco Ralios (C.P.)|
|- Chair||Nikodemos Thanasis|
|- Density||4,411.8/km2 (11,426.5/sq mi)|
|- Metro Density||309.7/km2 (802.2/sq mi)|
|- Metro||6,519 km2|
Demetrios, officially the Capital City of Demetrios, is the capital of the United Kingdom of Posillipo. It is the site of the Posilliponian Government, the House of Consuls, the Senate, the Supreme Court, and serves as the site for Biddingforth Palace, the official residence of the Posilliponian Monarch. As well as the home for the President of the Senate and the First Minister of the House. Since the 1700s, the Posilliponian Monarch has resided at Biddingforth Palace, which is a large mansion located just out side of Demetrios, in Capital Village. Although the monarch resides in Biddingforth Palace, their official workplace is across the village in the Royal Palace of Posillipo. As of 2010, the official population of Demetrios was 2,435,432 making it home to about 1% of Posillipo's population which is 250 Million.
Founded circa 1250, Demetrios has long been one of Posillipo's many cultural, media, political, and economic centres. Its strategic location on the Agrilonian River in Central Posillipo, between two mountain ranges, has been historically important. Demetrios is known for its beauty, its buildings and architecture, its abundant clean and open water, and its many parks. It is sometimes referred to as the Green City. Agrilos is the most visited city in Posillipo, with 1.9 million international visitors in 2008.