Central Places in Southern Germany

Central-place theory, developed by German geographer Walter Christaller in his 1933 book Central Places in Southern Germany, explains how settlements are distributed and how they function within a system. The core idea is that settlements, or "central places," exist to provide goods and services to surrounding market areas.

Christaller's theory assumes a uniform landscape with consistent population density and easy movement. Settlements are categorized by their "order": lower-order places serve smaller areas with frequently purchased goods, while higher-order places offer more specialized goods and services and are fewer in number. The "threshold" (minimum market size needed for viability) and "range" (maximum distance consumers will travel) determine a central place's market area.1