Konstantinos has 150+ answers in. San Francisco, CA. The term Bay Area is a geographic term and describes the communities around San Francisco all the way down to San Jose. Silicon Valley is a subset of the Bay Area.
If you compare the top city on this listâManilaâto the most densely populated city in the U.S.âNew York Cityâthe difference is staggering. New Yorkâs population density is 26,402 people per square mileâless than a quarter the population density of Manila!
The most densely populated city in Africa is Cairo in Egypt with an  approximate 14,000,000 people    Rwanda has to be the most densely populated country in Africa. It  is only 26,338 square kilometres and it's population is over 11  million.