Söderby is a settlement in Lemland Municipality, in Åland, Finland. Söderby lies at 18 m above sea level. It has 589 inhabitants (2024). The nearest city is Kirkkonummi, 243 km to the east. Beaches nearby: Norrby Brygga (1.7 km), Klockarholmen (1.8 km), Algrundet (6.3 km). Among the landmarks around are Åland Maritime Museum (8.7 km), St. George's Church (8.3 km) and Åland Museum (7.8 km). Among the natural features are Kasberget (1.2 km) and Segelgrundet (5.0 km).