Minecraft wiki entry for Chunk, associated text: For example, in a single-player game with a render distance of 5 chunks, an area of 7×7 chunks centered around the player has a load type of entity ticking (level 31) the immediately enclosing chunks. The strip of chunks at the outer edge of a 9×9 perimeter surrounding the playe have ticking (level 32), and the next enclosing chunks (11×11 perimeter) are border chunks (level 33).