|Coordinates: 38°00′N 23°42′E / 38.0°N 23.7°E|
|• Type||Regional council|
|• Regional Governor||Giorgos Patoulis (New Democracy)|
|• Total||3,808.10 km2 (1,470.32 sq mi)|
|• Density||1,000/km2 (2,600/sq mi)|
|Gross regional product|
|• Total||€85.769 billion|
|• Per capita||€22,835|
|Time zone||UTC+2 (EET)|
|• Summer (DST)||UTC+3 (EEST)|
|ISO 3166 code||GR-I|
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Attica (Greek: Περιφέρεια Αττικής, romanized: Periféria Attikís, [periˈferi.a atiˈcis]) is an administrative region of Greece, that encompasses the entire Athens metropolitan area, the country's capital and largest city. The region is coextensive with the former Attica Prefecture of Central Greece and covers a greater area than the historical region of Attica.
Located on the eastern edge of Central Greece, Attica covers about 3,808 square kilometers. In addition to Athens, it contains within its area the cities of Elefsina, Megara, Laurium, and Marathon, as well as a small part of the Peloponnese peninsula and the islands of Salamis, Aegina, Angistri, Poros, Hydra, Spetses, Kythira, and Antikythera. About 3,800,000 people live in the region, of whom more than 95% are inhabitants of the Athens metropolitan area. In 2019, Attica had the HDI of 0.912, the highest in Greece.
The region was established in the 1987 administrative reform, and until 2010 it comprised the 4 prefectures of Athens, East Attica, Piraeus and West Attica.
With the 2010 Kallikratis plan, the region's powers and authority were completely redefined and extended. Since 1 January 2011, the region represents the second-level local administration. While being supervised by the Decentralized Administration of Attica, it is now an independent self-governing body with powers and a budget comparable to the former prefectures.
The region is subdivided into eight subordinate regional units:
The Attica region consists of eight electoral districts: Athens A, Athens B1, Athens B2, Athens B3, Piraeus A, Piraeus B, East Attica and West Attica.
The region has shrunk by 35,965 people between 2011 and 2021, experiencing a population loss of 0.9%.
The Gross domestic product (GDP) of the region was 87.4 billion € in 2018, accounting for about 47% of the Greek economic output. GDP per capita adjusted for purchasing power was 28,000 € or 93% of the EU27 average in the same year. The GDP per employee was 99% of the EU average. Attica is the region in Greece with the highest GDP per capita. Despite that, the unemployment rate stood at 21.6% in 2017.
The main roads and highways of Attica are:
Numerous ferry lines, both normal ferries and high speed vessels, connect the port of Piraeus, with the islands of the region.