At the back of the sink or toilet, the ceiling height can be as low as 60 inches. Vanity and sink heights have no requirements for height; the recommendation is that they fit the height of the user, ranging from 32 to 43 inches.
This year's edition of the World Urban Areas Report covers more than a thousand of the largest cities in the world, from Tokyo (pop. 37,000,000), right down to tiddlers like 850th-ranked Leicester (Pop. 534,000): all 1,009 cities, in fact, with a population of half a million of more. Here are the top 10.
The most populated city in the world is Tokyo Japan with over 30million. Shanghai has a population of over 20 million. Approximately 17 million permanent residents and more than 3 million temporary residents. Beijing is the second most populous city in China. Wikipedia lists (density by people per sq. km): 1. Shanghai 2.