Maturín is a city in Venezuela, the capital of the Venezuelan state of Monagas and a centre for instrumental exploration and development …Maturín is a city in Venezuela, the capital of the Venezuelan state of Monagas and a centre for instrumental exploration and development of the petroleum industry in Venezuela. The metropolitan area of Maturín has a population of 401,384 inhabitants. Maturín is also a busy regional transportation hub, connecting routes from the northeastern coast to the Orinoco Delta and the Gran Sabana.