Size of Guernsey: Land Area & Islands

The Bailiwick of Guernsey covers 78 km² (30 sq mi). The main island, Guernsey, is 63 km² (24 sq mi). The bailiwick also includes Alderney (8 km²), Sark (5.45 km²), Herm (1.5 km²), Jethou, and smaller islets. Total population is ~63,000 (2021).