The Nyiakeng Puachue Hmong block spans U+1E100–U+1E14F, 80 codepoints in Plane 1 (Supplementary Multilingual Plane). 71 are assigned in Unicode 16.0; the other 9 are reserved for future characters.
All of its characters belong to the Nyiakeng Puachue Hmong script.
By general category: 46 other letters (Lo), 10 decimal digits (Nd), 7 non-spacing marks (Mn), 7 modifier letters (Lm), 1 other symbols (So).
The first 71 arrived in Unicode 12.0 (2019).
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.