Hamlin Island (Japanese: デコポン島Dekopon Island) is the northernmost island in the Orange Archipelago. Due to its proximity, it serves as a gateway to the Kanto region. A ferry carries passengers between Pallet Town and a tiny island connected by a bridge to Hamlin Island.
The smaller island is a popular tourist location, with amenities such as a coffee shop. In The Underground Round Up, the island was overrun with Electrode due to a failed experiment for producing energy. The inhabitants of the island evacuated, and the island was left deserted for several years until Diglett Rancher Poncho was called in to get rid of the Electrode. He was eventually able to relocate them to the open prairie in the middle of the larger island. After this, the inhabitants of the smaller island returned, and the island became open for business again.