The Thai block spans U+0E00U+0E7F, 128 codepoints in Plane 0 (Basic Multilingual Plane). 87 are assigned in Unicode 16.0; the other 41 are reserved for future characters.

By script: Thai (86), Common (1).

By general category: 56 other letters (Lo), 16 non-spacing marks (Mn), 10 decimal digits (Nd), 3 other punctuation (Po), 1 currency symbols (Sc), plus smaller groups.

The first 87 arrived in Unicode 1.1 (1993).