Mexico City is located in the Rio Grande Valley.
Mexico City . It is located in the Valley of Mexico ( Valle de México ) , a large valley in the high plateaus at the center of Mexico , at an altitude of 2240 m . The Rio Grande Valley ( RGV ) , The Valley , is an area located in the southernmost tip of South Texas . The Valley of Mexico ( Valle de México Tepētzallāntli Mēxihco ) is a highlands plateau in central Mexico roughly coterminous with the present-day Distrito Federal ( now Mexico City since year 2017 ) and the eastern half of the State of Mexico .