9. A memory device comprising one or more instructions which, when executed by a processor, cause the processor to: extract, from a document, information identifying a geographic location associated with the document; determine a particular geographic area associated with the geographic location; determine a plurality of geographic areas within a first range of the particular geographic location associated with the document, where the plurality of geographic areas are not associated with the document; add a plurality of references to the document to a document index, where the plurality of added references respectively reference the document by the particular geographic area and the plurality of geographic areas; receive a search query that includes one or more geographically descriptive terms; determine a search region based on the one or more geographically descriptive terms included in the search query; and identify the document from the document index based on the search region.
9. A memory device comprising one or more instructions which, when executed by a processor, cause the processor to: extract, from a document, information identifying a geographic location associated with the document; determine a particular geographic area associated with the geographic location; determine a plurality of geographic areas within a first range of the particular geographic location associated with the document, where the plurality of geographic areas are not associated with the document; add a plurality of references to the document to a document index, where the plurality of added references respectively reference the document by the particular geographic area and the plurality of geographic areas; receive a search query that includes one or more geographically descriptive terms; determine a search region based on the one or more geographically descriptive terms included in the search query; and identify the document from the document index based on the search region. 10. The memory device of claim 9 , further comprising one or more instructions which, when executed by a processor, cause the processor to: determine other geographic areas to associate with the document, the other geographic areas being located outside of the first range and within from the geographic location associated with the document; and add a plurality of additional references to the document to the document index, where the plurality of additional references respectively reference the document by the geographic areas in the second range.