It seems to be a small city with an average population that resembles the real world. Humans that live in Karakura Town are unaware of the ghosts and spiritual forces that live there. The Human World is home to Pluses, the Quincy, the Vizard, and the Bount as well. Hollows, which normally reside in Hueco Mundo, often visit the Human World to hunt souls which they feed upon. The only other part of the Human World that has been seen is Kagamino City, which is 22km east of Karakura Town.
The concentration of Spirit Particles in the atmosphere is lower in the Human World than it is in Hueco Mundo and Soul Society. Shinigami and Arrancar can gather Spirit Particles underneath their feet to stand, walk or balance in the air, while Pluses seem to be able to float around at will. This is not possible in Soul Society, where special artifacts are required to fly or float in the air. The area in the Human World which has the highest concentration of Spirit Energy and has the highest rate of attracting spiritual beings is referred to as the juureichi. The exact location of this area varies over time, but is currently Karakura Town.
