List of largest cities in the Organisation of Islamic Cooperation member countries

This is a list of the largest cities in the Organisation of Islamic Cooperation member states, based on the United Nations World Urbanization Prospects report (2010 population estimates from the report's 2007 revision).^[1]

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Urban agglomerations

Rank	City	Images	Population	Country	Statistical concept[2]	Area (km2)[3]
1	Jakarta[4]		30,214,303	Indonesia	Urban agglomeration[5]	6,392
2	Karachi[6]		24,700,000	Pakistan	Urban agglomeration	4,966
3	Dhaka[7]		22,690,116	Bangladesh	Urban agglomeration	2,161
4	Cairo		18,420,000	Egypt	Official metropolitan area	1,310
5	Lagos[8]		17,060,307	Nigeria	Urban agglomeration[9]	907
6	Istanbul		14,500,000	Turkey	Metropolitan municipality	5,343
7	Tehran[10]		13,532,000	Iran	City proper	1,489
8	Lahore[10]		11,126,285	Pakistan	Urban agglomeration	1,370
9	Bandung[4]		8,199,892	Indonesia	Urban agglomeration	1,876
10	Faisalabad[10]		7,873,910	Pakistan	Urban agglomeration	1,097
11	Rawalpindi[11]		7,412,205	Pakistan	Metropolitan Area	6,451
12	Surabaya[4]		7,302,283	Indonesia	Urban agglomeration[5]	2,787
13	Baghdad		6,625,000	Iraq	Metropolitan area	730
14	Semarang		6,544,289	Indonesia	Urban agglomeration	5,287
15	Kuala Lumpur[10]		6,088,000	Malaysia	Metropolitan area[5]	673
16	Riyadh[10]		5,666,000	Saudi Arabia	City proper	1,550
17	Khartoum[10]		5,185,000	Sudan	Urban agglomeration	580
18	Ankara		5,045,083	Turkey	Urban agglomeration[12]	2,516
19	Gujranwala[10]		5,014,196	Pakistan	Urban agglomeration	1,556
20	Chittagong		5,012,000	Bangladesh	Official metropolitan area	990
21	Multan[11]		4,745,109	Pakistan	City District	3,721
22	Alexandria		4,421,000	Egypt	City proper	2,970
23	Casablanca		4,270,750	Morocco	Urban agglomeration	1,615
24	Peshawar[10]		4,269,079	Pakistan	Urban agglomeration	1,257
25	Abidjan		4,175,000	Ivory Coast	Urban agglomeration	2,550
26	Medan[13]		4,103,696	Indonesia	Metropolitan area	1,991
27	Yogyakarta		4,010,436	Indonesia	Urban agglomeration	1,900
28	Sargodha[11]		3,903,588	Pakistan	City District	5,854
29	Sialkot[11]		3,893,672	Pakistan	City District	3,016
30	Kabul		3,768,000	Afghanistan	City proper	275
31	Bahawalpur[11]		3,668,106	Pakistan	City District	24,830
32	Algiers		3,500,000	Algeria	Urban agglomeration[14]	363
33	Mashhad		3,131,586[15]	Iran	City proper	3,946

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