Abstract
The purpose of this paper is to comprehend the change of the community with depopulation in rurban area, by the case study in one area of Sanwa-town, Ibaraki Pref.
The result are as follows.
1) The new community is reorganized by junior school area.
2) The old community system bounds people by some traditional rules and they have just only top-down system.
3) The new community system is very clear and free. So newcomers are tends to belong to the new community.
4) For example, the new community is bottom up type, but newcomers are free so they never take root in burban area.
5) From now on, there are many problems (depopulation) and subjects (free) in rurban area. Old residents and newcomers should have common purpose for new rurban areas' community.
