What are The 2 colonies that never became a state?

The two colonies that never became states are the District of Columbia and Puerto Rico. The District of Columbia was established as the nation's capital and remains a federal district, while Puerto Rico is a U.S. territory that has not been granted statehood despite ongoing discussions and referendums regarding its status. Both territories have unique political and cultural identities, but they lack the full rights and representation that come with statehood.