The islands were named after the largest island in the group, Ponza.
The archipelago has an area of about 11.91 km2 (4.60 sq mi) with a resident population of about 4,076 persons. During the summers, many people visit the islands. They islands, Ponza and Ventotene, can be reached by ferry or hydrofoil.
The highest point in the archipelago is Monte Guardia in the southern end of the Ponza island; it is 283 m (928 ft) high.
|Ponza||Northwestern group||Ponza, Palmarola, Zannone, Gavi||3,337||10.16||328.4|
|Ventotene||Southeastern group||Ventotene, Santo Stefano||739||1.75||422.3|
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