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* ''Ownership'': proprietary or [[public ___domain|free]], differing by its [[licence]]s.
* ''Formation'': the geocode can be originated from a name (ex. abbreviation of official name the country) or from mathematical function ([[data compression|encoding]] algorithm to compress [[latitude-longitude]]). See ''geocode system'' types below (of [[#Systems of standard names|names]] and of [[#Systems of regular grids|grids]]).
* ''Hierarchy'': geocode's syntax hierarchy corresponding to the spatial hierarchy of its represented entities. A geocode system can hierarchical ([[#Hierarchical_naming|name]] or [[#Hierarchical_grids|grid]]) or non-hierarchical.▼
* ''Covering'': global or partial. The entities (represented by the geocodes) are in all globe (e. g. geographical points) or is delimited the theme (e.g. only terrestrial areas) or by the ownership's jurisdiction (e.g. only into a country).
* ''Type of the represented entity'': [[Well-known text representation of geometry|type of geometry]]. Point (the geocode can be translated to a [[Geo URI]]), grid cell (the geocode system is related with a [[discrete global grid|DGG]]) or polygon (typically administrative boundaries delimitations).
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** some non-standard geographic entities, can be classified also by its [[Coordinate system|coordinate system and elipsoid of reference]] (e.g. [[Universal Transverse Mercator coordinate system|UTM]]). The [[de facto standard|''de facto'' standard]] is the [[WGS84]].<ref>For internet formats and protocols, the [[WGS84]] is ''de facto'' and [[De jure|''de juri'']] standard: see [[geo URI]] protocol, [[GeoJSON]], [[Geography Markup Language|GML]] and [[Keyhole Markup Language|KML]] formats.</ref>
* ''Scope of use'': general use vs specialized (e.g. airport geocodes).
▲* ''Hierarchy'': geocode's syntax hierarchy corresponding to the spatial hierarchy of its represented entities. A geocode system can hierarchical ([[#Hierarchical_naming|name]] or [[#Hierarchical_grids|grid]]) or non-hierarchical.
<!-- add or move the part to a final observation:
Grids have also some tradition in more specific classifying: DGGS is (hierarchical+grid+global+equalArea) ... DGG is (grid+global) ...
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