#
|
Population
|
Country
|
Urban Area
|
1
|
20,738,738
|
China
|
Beijing
|
2
|
18,601,400
|
Thailand
|
Bangkok
|
3
|
15,172,700
|
Argentina
|
Buenos Aires
|
4
|
14,253,019
|
India
|
Bengaluru
|
5
|
10,544,590
|
Colombia
|
Bogotá
|
6
|
9,746,835
|
Indonesia
|
Bandung
|
7
|
7,763,987
|
Iraq
|
Baghdad
|
8
|
5,345,763
|
Spain
|
Barcelona
|
9
|
5,177,597
|
Brazil
|
Belo Horizonte
|
10
|
4,679,500
|
Germany
|
Berlin
|
11
|
4,382,009
|
United States
|
Boston
|
12
|
4,307,985
|
South Korea
|
Busan
|
13
|
4,227,569
|
Mali
|
Bamako
|
14
|
3,911,726
|
Brazil
|
Brasília
|
15
|
3,455,765
|
Azerbaijan
|
Baku
|
16
|
3,083,783
|
United Kingdom
|
Birmingham
|
17
|
2,987,238
|
Hungary
|
Budapest
|
18
|
2,756,694
|
Congo (Rep.)
|
Brazzaville
|
19
|
2,622,585
|
Australia
|
Brisbane
|
20
|
2,510,773
|
India
|
Bhopal
|
21
|
2,381,774
|
China
|
Baotou
|
22
|
2,351,729
|
Turkey
|
Bursa
|
23
|
2,348,982
|
Romania
|
Bucharest
|
24
|
2,343,554
|
United States
|
Baltimore
|
25
|
2,338,157
|
Belgium
|
Brussels
|
|
#
|
Population
|
Country
|
Urban Area
|
26
|
2,275,578
|
Colombia
|
Barranquilla
|
27
|
2,234,080
|
Brazil
|
Belém
|
28
|
2,233,377
|
Iraq
|
Basra
|
29
|
2,165,018
|
Lebanon
|
Beirut
|
30
|
1,798,446
|
Nigeria
|
Benin City
|
31
|
1,694,403
|
D.R. Congo
|
Beni
|
32
|
1,684,899
|
India
|
Bareilly
|
33
|
1,612,587
|
Serbia
|
Belgrade
|
34
|
1,598,923
|
India
|
Berhampore
|
35
|
1,437,559
|
China
|
Baoding
|
36
|
1,426,926
|
Indonesia
|
Bandar Lampung
|
37
|
1,425,276
|
C. A. R.
|
Bangui
|
38
|
1,370,879
|
India
|
Bhilai
|
39
|
1,368,940
|
Indonesia
|
Banjarmasin
|
40
|
1,317,335
|
Kyrgyzstan
|
Bishkek
|
41
|
1,292,552
|
Indonesia
|
Batam
|
42
|
1,289,100
|
Venezuela
|
Barquisimeto
|
43
|
1,274,128
|
United Kingdom
|
Bristol
|
44
|
1,221,586
|
India
|
Bhubaneswar
|
45
|
1,207,250
|
Libya
|
Benghazi
|
46
|
1,190,000
|
D.R. Congo
|
Bukavu
|
47
|
1,173,593
|
China
|
Bengbu
|
48
|
1,163,522
|
Colombia
|
Bucaramanga
|
49
|
1,161,107
|
China
|
Baoji
|
50
|
1,139,580
|
India
|
Begusarai
|
|