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Estimated Origin of Jamilkhuzis- Breakdown by Country
99% of Jamilkhuzis are partially or fully descended from climate refugees arriving on Jamilkhuze's shores between the late 21st and mid 22nd centuries. Thanks to well-maintained records of historical population changes in UN member states and comprehensive archives of immigrant primary accounts, the Bureau of Historical Demographics has been able to compile a summary of the relative timing and volume of arrivals from over 200 sovereign states and jurisdictions.
NOTE: This summary only describes the origins of climate refugees in terms of national and subnational political boundaries. It is worth noting that refugees from a given country or jurisdiction may not be demographically representative of the citizens or inhabitants of that country or jurisdiction as a whole. Given the complex relationship between the concrete concepts of nationality and citizenship and the more abstract concepts of ethnicity, language, religion, and race, the Bureau strongly advises against using these findings as a direct proxy for the racial and/or ethnic composition of Jamilkhuze. However, the Bureau acknowledges that the breakdown of refugees by country of origin may be helpful in understanding how the location, timing, and origin of climate refugee migrations have shaped Jamilkhuzi society and culture.
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Numbers
The numbers given below represent the estimated number of refugees arriving from a particular jurisdiction out of 1000 total between the years 2041 and 2160. These may not add up to 1000 due to rounding. The listed jurisdictions are based on the 2016 political boundaries in our universe, 
which do not necessarily correspond to those in the fictional world of Jamilkhuze.
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360 SOUTH ASIA
240 Republic of India
72 North India
44 West India
46 East India
66 South India
12 Northeast India
40 Pakistan
20 Punjab
10 Sindh
10 Other
56 Bangladesh
13 Sri Lanka
9 Nepal
2 Maldives/Afghanistan/Bhutan
112 EAST ASIA
93 Mainland China (PRC)
55 Central China
17 South China
6 East China
12 North China
3 Other
7 Taiwan/Hong Kong/Macau
5 Korea (ROK/DPK)
6 Japan
1 Mongolia
266 SOUTHEAST ASIA
72 Indonesia
36 Java
25 Sumatra/Bali/Kalimantan
11 Other
3 East Timor*
4 Malaysia/Singapore/Brunei
70 Philippines
46 Luzon
10 Visayas
14 Mindanao
70 Vietnam
26 Northwest, Northeast, Red River Delta Regions + Thanh Hóa + Nghệ An Provinces
20 Central Coastal + Central Highlands Regions
24 Southeast, Mekong Delta Regions + Ninh Thuận + Bình Thuận Provinces
8 Cambodia
3 Laos
18 Thailand
20 Myanmar
56 HORN OF AFRICA
45 Ethiopia
5 Eritrea
6 Somalia/Djibouti
68 WEST AFRICA
45 Nigeria
7 Niger/Mali/Mauritania
5 Ivory Coast/Benin/Togo
5 Sierra Leone/Liberia/Gambia/Cape Verde/Guinea
3 Ghana
1 Burkina Faso
2 Senegal/Guinea-Bissau
46 OTHER SUB-SAHARAN AFRICA
7 South Africa
9 Other Southern African
2 Namibia/Angola
4 Botswana/Zimbabwe/Zambia
3 Mozambique
16 Great Lakes
4 Uganda/Rwanda/Burundi/Malawi
6 Kenya
6 Tanzania
8 Cameroon
6 Other
3 Central Africa
3 Madagascar/Seychelles/Comoros/Mauritius
20 NORTH AFRICA
10 Morocco/Algeria
4 Egypt
6 Other (incl. Sudan)
50 WEST ASIA AND EUROPE
8 Iran
10 Levant
3 Iraq
9 Arabian Peninsula
7 Yemen
2 Other
7 Turkey
3 Caucasus
6 UK/France
4 Other
22 OTHER
8 Central Asia
3 Siberia
5 South America
1 Central America/Caribbean
1 North America
3 Oceania
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Maps
Maps of the relative volume of climate refugees coming from Asia and Africa between the years AD 2041 and AD 2160. The numbers represent how many out of every 1000 refugees arriving in Nouveau Yathrib came from a certain jurisdiction.
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General Comments/tl;dr:
-Almost all of the migration to Jamilkhuze came from Asia and Africa, with migration from the Indian subcontinent and the South China Sea littoral being particularly well-represented.
-Relative intensity of migration from a given country is largely a function of the country's relative population size. The our-world 21st-century countries that have sent the most refugees to our shores have both large population sizes and high population densities.
-Many of the countries listed above were former British and French colonies and have English and/or French as official/administrative languages.
-Many of the countries listed above are majority Muslim, have significant Muslim minorities, or were historically strongly influenced by Islamic polities.
-Many of the countries listed above are considered to be more vulnerable to the impacts of climate change due to geographic and socioeconomic factors.
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Regions of the Republic of India- The regions used here are defined 
as follows:
North India = Punjab, Jammu & Kashmir, Haryana, Himachal Pradesh, Uttar Pradesh, Uttarakhand, Rajasthan, Madhya Pradesh, and Delhi.
West India = Goa, Gujarat, Maharashtra, Daman & Diu, and Dadra & Nagar Haveli
South India = Andhra Pradesh, Karnataka, Kerala, Tamil Nadu, Telangana, Lakshadweep, and Puducherry
East India = Bihar, Chhattisgarh, Jharkhand, Odisha, West Bengal, and the Andaman and Nicobar Islands
Northeast India = Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim, and Tripura
Regions of the People's Republic of China- The regions used here are defined as follows:
North China = Hebei, Henan, Shandong, Shanxi, Shaanxi, Gansu, Ningxia, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Beijing, and Tianjin
Central China = Jiangxi, Hunan, Hubei, Guizhou, Sichuan, Yunnan, and Chongqing
South China = Fujian, Guangdong, Guangxi, and Hainan
East China = Anhui, Jiangsu, Zhejiang, and Shanghai
Other = Xinjiang, Qinghai, and Tibet.
The Special Administrative Regions of Hong Kong and Macau are listed separately.
Regions of Vietnam- same as in the Wikipedia article. Thanh Hoa and Nghe An are the two northernmost provinces in the Northern Central coast region, while Ninh Thuan and Binh Thuan are the two southernmost provinces in the Southern Central coast region.
Regions of the Philippines- these follow the convention of dividing the Philippines archipelago into three island groups, with Luzon in the north, Visayas in the middle, and Mindanao in the south.
