Which Palauan state contains the capital Ngerulmud?

The Palauan state containing the capital Ngerulmud is Melekeok.

Ngerulmud is Palau’s seat of government and lies within Melekeok State, on the central-eastern side of Babeldaob, Palau’s largest island. The capitol complex contains buildings for the executive, legislative and judicial branches, arranged around a central open plaza inspired in part by traditional Palauan meeting-house forms.

Palau’s former capital was Koror, but the government moved to Ngerulmud in October 2006. The move fulfilled a constitutional direction to establish a permanent capital on Babeldaob rather than keeping the national government on Koror Island. Ngerulmud is near, but distinct from, Melekeok village, the state’s traditional and administrative centre.

A common mix-up is to answer Babeldaob. That is the island, not the state. Another is Koror, which remains Palau’s largest city and major population centre but is no longer the national capital.