World's Most Populous Urban Agglomerations:¹ 2008

Rank	Name	Est. population
1.	Tokyo, Japan	33,800,000
2.	Seoul, South Korea	23,900,000
3.	Mexico City, Mexico	22,900,000
4.	Delhi, India	22,400,000
5.	Bombay, India	22,300,000
6.	New York, United States of America	21,900,000
7.	Sao Paulo, Brazil	21,000,000
8.	Manila, Philippines	19,200,000
9.	Los Angeles, United States of America	18,000,000
10.	Shanghai, China	17,900,000
11.	Osaka, Japan	16,700,000
12.	Calcutta, India	16,000,000
13.	Karachi, Pakistan	15,700,000
14.	Canton, China	15,300,000
15.	Jakarta, Indonesia	15,100,000
16.	Cairo, Egypt	14,800,000
17.	Buenos Aires, Argentina	13,800,000
18.	Moscow, Russia	13,500,000
19.	Beijing, China	13,200,000
20.	Dacca, Bangladesh	13,100,000
21.	Istanbul, Turkey	12,500,000
21.	Rio de Janeiro, Brazil	12,500,000
21.	Tehran, Iran	12,500,000
24.	London, Great Britain	12,300,000
25.	Lagos, Nigeria	11,400,000
26.	Paris, France	10,000,000
27.	Chicago, United States of America	9,850,000
28.	Shenzhen, China	9,400,000
29.	Wuhan, China	9,000,000
30.	Lima, Peru	8,850,000

NOTES: The definition of agglomerations varies significantly from city to city, hence the difficulty of compiling an accurate, comparative list of the world's most populous urban areas. 1. Includes metropolitan areas and surrounding urban agglomerations. Agglomerations include a central city and bordering urban areas. Some agglomerations have more than one central city (e.g., Tokyo includes Yokohama and Kawasaki).

Most Populous Cities of the World

Population Statistics

More on World's Most Populous Urban Agglomerations 2008 from Infoplease:

Most Populous Cities of the World - Find out which cities are the most populous in the world.
Metropolitan Areas with Population of 5,000,000 or More - Metropolitan Areas with Population of 5,000,000 or More The following metropolitan areas of the ...
U.S. Cities with Population over 100,000 - U.S. Cities with Population over 100,000 ZIP codes provided below indicate the primary ZIP code for ...
Car Theft by Top Ten U.S. Metropolitan Areas, 2005 - Car Theft by Top Ten U.S. Metropolitan Areas, 2005 Rank Metropolitan Statistical Area Vehicles ...
local area network - local area network local area network (LAN), a computer network dedicated to sharing data among ...