page_title: Central place theory
section_title: K = 7 administrative principle
hierarchical_section_title: Central place theory / Predictions / K = 7 administrative principle
caption_attribution_description: Christaller's third model of distribution of cities on space, according to the administrative principle.
context_page_description: Central place theory is a geographical theory that seeks to explain the number, size and location of human settlements in a residential system. It was introduced in 1933 to explain the spatial distribution of cities across the landscape. The theory was first analyzed by German geographer Walter Christaller, who asserted that settlements simply functioned as 'central places' providing services to surrounding areas.
context_section_description: According to K = 7 administrative principle (or political-social principle), settlements are nested according to sevens. The market areas of the smaller settlements are completely enclosed within the market area of the larger settlement.  Since tributary areas cannot be split administratively, they must be allocated exclusively to a single higher-order place. Efficient administration is the control principle in this hierarchy.
caption: K = 7 Principle
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