Ischia

For other uses, see Ischia (disambiguation).

Ischia
View of Ischia from Procida
Highest point
Elevation	789 m (2,589 ft)
Coordinates	40°43′52″N 13°53′45″E
Geography
Ischia Location within Campania Ischia Location within Italy
Location	Metropolitan City of Naples, Italy
Geology
Mountain type	Complex volcano
Last eruption	January to March 1302

Ischia

Geography
Location	Tyrrhenian Sea
Area	46.55 km2 (17.97 sq mi)
Highest elevation	789 m (2589 ft)
Highest point	Mount Epomeo
Administration
Italy
Region	Campania
Metropolitan City	Naples
Largest settlement	Ischia (pop. 19,415)
Demographics
Population	61,727 (2026)
Pop. density	1,326.0/km2 (3434.3/sq mi)

Ischia (/ˈɪskiə/ ISK-ee-ə, Italian: [ˈiskja], Neapolitan: [ˈiʃkjə]) is a volcanic island in the Tyrrhenian Sea. It lies at the northern end of the Gulf of Naples, about 30 kilometres (19 miles) from the city of Naples. It is the largest of the Phlegrean Islands. Although inhabited since the Bronze Age, as a Greek emporium it was founded in the 8th or 9th century BCE, and known as Πιθηκοῦσαι, Pithekoūsai.

Roughly trapezoidal in shape, it measures approximately 10 km (6 miles) east to west and 7 km (4 miles) north to south and has about 34 km (21 miles) of coastline and a surface area of 47 square kilometres (18.1 sq mi). It is almost entirely mountainous; the highest peak is Mount Epomeo, at 788 metres (2,585 feet).

Ischia is also the name of the main municipality of the island. The other municipalities of the island are Barano d'Ischia, Casamicciola Terme, Forio, Lacco Ameno and Serrara Fontana. The island is very densely populated, with 61,727 residents as of 2026, corresponding to a population density of 1,326 inhabitants per squared kilometre.