ID — Indonesia

Indonesia is the world's largest archipelago with over 17,000 islands, the fourth-most populous country, and the largest Muslim-majority nation. Jakarta is the current capital, though the government is building a new capital called Nusantara in East Kalimantan, Borneo. Indonesia has a rapidly growing digital economy with major tech companies like GoTo (Gojek + Tokopedia) and Bukalapak. The Indonesian Rupiah (IDR) operates with very large denomination values — everyday transactions involve thousands or millions of Rupiah. For developers, the ID country code maps to the id-ID locale for Indonesian. The .id domain is well-used, and +62 is the dialing code. The IDR's large numbers require proper thousand-separator formatting (period in Indonesian convention). Indonesia's NIK (national identity number) has a 16-digit format with embedded information. The planned capital city change from Jakarta to Nusantara will require geographic database updates. Indonesia's massive digital market, driven by mobile-first users, makes proper id-ID localization essential for Southeast Asian applications.