Spatial-demographic tendencies in present development of settlements on mountain Suva Planina are characterized by territorial grouping and decreasing number of settlements, positive demographic development of a small group of settlements, and several decades of desertion of a great number of settlements. All these characteristics, both individually and in interaction, have led to formation of specific differences in settlement development and in present situation between groups of settlements located in various altitude zones. They have also led to differentiation of settlement areas with negative and variable (positive and negative) development tendencies.