The Lao block spans U+0E80–U+0EFF, 128 codepoints in Plane 0 (Basic Multilingual Plane). 83 are assigned in Unicode 16.0; the other 45 are reserved for future characters.
All of its characters belong to the Lao script.
By general category: 55 other letters (Lo), 17 non-spacing marks (Mn), 10 decimal digits (Nd), 1 modifier letters (Lm).
The first 65 arrived in Unicode 1.1 (1993); later additions came in 6.1 (2), 12.0 (15), 15.0 (1).