The Yi Syllables block spans U+A000–U+A48F, 1,168 codepoints in Plane 0 (Basic Multilingual Plane). 1,165 are assigned in Unicode 16.0; the other 3 are reserved for future characters.
All of its characters belong to the Yi script.
By general category: 1,164 other letters (Lo), 1 modifier letters (Lm).
The first 1,165 arrived in Unicode 3.0 (1999).
1,165 characters are East Asian Wide or Fullwidth and take two columns in terminals.