Chuuk State (also known as Truk) is one of the four states of the Federated States of Micronesia (FSM). Chuuk is the most populous state of the FSM with 50,000 inhabitants on 120 square kilometres (46 square miles). Chuuk Lagoon is where most people live. Weno Island in the Lagoon functions as state capital and is FSM's biggest city.