The Ol Chiki block spans U+1C50–U+1C7F, 48 codepoints in Plane 0 (Basic Multilingual Plane). Every one of them is assigned in Unicode 16.0.
All of its characters belong to the Ol Chiki script.
By general category: 30 other letters (Lo), 10 decimal digits (Nd), 6 modifier letters (Lm), 2 other punctuation (Po).
The first 48 arrived in Unicode 5.1 (2008).