Although filtering or scoring results by geolocation is useful, it is often more useful to be able to present information to the user on a map. A search may return way too many results to be able to display each geo-point individually, but geo-aggregations can be used to cluster geo-points into more manageable buckets.
Three aggregations work with fields of type geo_point:
geo_distance-
Groups documents into concentric circles around a central point.
geohash_grid-
Groups documents by geohash cell, for display on a map.
geo_bounds-
Returns the
lat/loncoordinates of a bounding box that would encompass all of the geo-points. This is useful for choosing the correct zoom level when displaying a map.