The Deseret block spans U+10400–U+1044F, 80 codepoints in Plane 1 (Supplementary Multilingual Plane). Every one of them is assigned in Unicode 16.0.
All of its characters belong to the Deseret script.
By general category: 40 uppercase letters (Lu), 40 lowercase letters (Ll).
The first 76 arrived in Unicode 3.1 (2001); later additions came in 4.0 (4).
Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.