The Runic block spans U+16A0–U+16FF, 96 codepoints in Plane 0 (Basic Multilingual Plane). 89 are assigned in Unicode 16.0; the other 7 are reserved for future characters.
By script: Runic (86), Common (3).
By general category: 83 other letters (Lo), 3 other punctuation (Po), 3 letter numbers (Nl).
The first 81 arrived in Unicode 3.0 (1999); later additions came in 7.0 (8).