# Cephalonia > Greek island in the Ionian Sea **Wikidata**: [Q178488](https://www.wikidata.org/wiki/Q178488) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Cephalonia) **Source**: https://4ort.xyz/entity/cephalonia ## Summary Cephalonia, also known as Kefalonia, is a Greek island located in the Ionian Sea and is part of the Ionian Islands group. It is administratively organized within the Kefalonia Regional Unit and historically associated with the Kefalonia Prefecture and the former Kefalonia Municipality. The island is known for its rich cultural heritage, strategic geographic position, and local significance in the region. ## Key Facts - Official names/aliases: Cephalonia, Kephallenia, Kefalonia Island, Kefalonia - Location: Ionian Sea, part of the Ionian Islands - Country: Greece (ISO code: GR / GRC) - Coordinates: Latitude 38.265, Longitude 20.5525 - Population: 36,064 - Administrative divisions: - Kefalonia Regional Unit (established 2011) - Kefalonia Prefecture (historical) - Kefalonia Municipality (2010–2019) - Related locations: - Argostoli: main town on the island - Part of the historical Byzantine district of Cephallenia - Notable for: being the largest of the Ionian Islands, its diverse ecosystems, and historical significance - Languages: Modern Greek (official) - Websites: - http://www.kefalonia.gr - http://www.cephalonie.fr - http://www.cephalonie.com - Sitelink count: 75 - Wikipedia title: Cephalonia - Wikidata description: Greek island in the Ionian Sea ## FAQs ### What is Cephalonia? Cephalonia is a Greek island located in the Ionian Sea and is part of the Ionian Islands. It is known for its historical significance, natural beauty, and cultural heritage. The island is administratively part of the Kefalonia Regional Unit, established in 2011. ### What is the population and location of Cephalonia? Cephalonia has a population of approximately 36,064 people. It is located in the Ionian Sea at coordinates 38.265°N (latitude) and 20.5525°E (longitude). The island is part of Greece and is the largest of the Ionian Islands. ### What are the administrative divisions related to Cephalonia? Cephalonia is organized under: - Kefalonia Regional Unit, established in 2011. - Kefalonia Prefecture, a historical administrative region. - Former Kefalonia Municipality, which existed from 2010 to 2019. ### What is the historical significance of Cephalonia? Cephalonia has historical ties to the Byzantine district known as Cephallenia. It is also culturally and administratively significant as part of the Ionian Islands, which have a rich history influenced by various civilizations. ### What language is spoken in Cephalonia? The official language spoken in Cephalonia is Modern Greek. ### What are the official websites for Cephalonia? Cephalonia is represented online through: - http://www.kefalonia.gr - http://www.cephalonie.fr - http://www.cephalonie.com ## Why It Matters Cephalonia holds cultural, historical, and geographic significance as part of Greece's Ionian Islands. As the largest of the group, it plays a central role in regional identity, tourism, and heritage preservation. Its strategic location in the Ionian Sea enhances its role in maritime and environmental studies. The island also contributes to understanding Byzantine history, particularly through its connection to the historical district of Cephallenia. ## Notable For - Being the largest of the Ionian Islands - Hosting the town of Argostoli, its administrative and cultural center - Having a rich historical connection to the Byzantine theme of Cephallenia - Serving as a key geographic and cultural hub in the Ionian Sea - Being part of the Kefalonia Prefecture and Kefalonia Regional Unit - Hosting a population of over 36,000, indicating its regional importance ## Body ### History Cephalonia's history is deeply intertwined with the broader narrative of the Ionian Islands and Greece. Historically, it was part of the Byzantine district known as Cephallenia, which underscores its early significance in regional governance and culture. Over time, the island became a formal administrative unit under various structures, including the Kefalonia Prefecture and later the Kefalonia Municipality (2010–2019). In 2011, the Kefalonia Regional Unit was established, continuing its administrative evolution. ### Geography and Location Cephalonia is located in the Ionian Sea, part of the broader Ionian Islands group. Its geographic coordinates are 38.265° latitude and 20.5525° longitude. The island is part of Greece, a country in Southeast Europe with the official name Hellenic Republic. It is strategically located in the Mediterranean biome, contributing to its unique climate and biodiversity. ### Administrative Divisions Cephalonia is organized under several administrative layers: - **Kefalonia Regional Unit**: Established on January 1, 2011. - **Kefalonia Prefecture**: Historical administrative region. - **Kefalonia Municipality**: Existed from 2010 to 2019. The island's main town, Argostoli, serves as a central hub for governance and culture. ### Demographics Cephalonia has a population of 36,064, indicating its role as a moderately populated island within the Ionian group. The population contributes to its regional importance and cultural identity. ### Culture and Language The official language spoken in Cephalonia is Modern Greek, aligning with national linguistic norms. The island's cultural identity is preserved through its historical sites, traditions, and local governance. ### Environment and Biodiversity As part of the Ionian Islands, Cephalonia benefits from a Mediterranean climate and is home to diverse flora and fauna. Its geographic location contributes to its unique environmental characteristics. ### Related Entities Cephalonia is connected to several related locations and themes: - **Argostoli**: The island's main town. - **Cephallenia**: A historical Byzantine district (theme) with which the island shares historical ties. - **Ionian Islands**: The broader group of islands in the Ionian Sea of which Cephalonia is the largest. ### Notable Features Cephalonia is notable for: - Its size as the largest of the Ionian Islands. - Hosting the town of Argostoli, a central cultural and administrative point. - Its connection to the historical Byzantine theme of Cephallenia. - Being part of the Kefalonia Prefecture and later the Kefalonia Regional Unit. - Its moderate population of 36,064, indicating regional importance. ### Websites and Online Presence Cephalonia is represented online through: - Official website: [http://www.kefalonia.gr](http://www.kefalonia.gr) - Related sites: - [http://www.cephalonie.fr](http://www.cephalonie.fr) - [http://www.cephalonie.com](http://www.cephalonie.com) ### Sitelinks and References Cephalonia has 75 sitelinks, indicating its relevance and presence across various platforms. It is referenced in multiple sources, including historical, cultural, and geographic databases. ## References 1. Freebase Data Dumps. 2013 2. GeoNames 3. [Source](http://dlib.statistics.gr/Book/GRESYE_01_0002_00061.pdf) 4. Quora