凉山彝族自治州
Ersuic speakers live in the western part of China's Sichuan province (several counties within the Garzê Tibetan Autonomous Prefecture, Liangshan Yi Autonomous Prefecture, and the prefecture-level city of Ya'an). Most of them are classified by the Chinese government as members of the Tibetan ethnic group ("Zang zu"), although some also are registered as Han Chinese. Older adults mostly use Ersu, but younger people also use Chinese or Yi.