In 1965, the author of this paper published a preliminary population estimate of 10,000-11,000 persons for Tikal as then known. Since 1965, mapping and excavation on four radial strips which run up to 12 km. in the four cardinal directions from the center of Tikal have broadened our knowledge of settlement at this site. We now have a good idea of the actual size of Late Classic Tikal, as well as its demographic makeup. This permits a new estimate of its Late Classic population as, conservatively, 49,000 persons. It is suggested that Late Classic Tikal qualifies as an urban center, but of a different sort than the urban centers of Mexico.