A gazetteer is a geographical dictionary or directory used in conjunction with a map or atlas. They typically contain information concerning the geographical makeup, social statistics and physical features of a country, region, or continent. Content of a gazetteer can include a subject's location, dimensions of peaks and waterways, population, GDP and literacy rate. This information is generally divided into topics with entries listed in alphabetical order. 

Ancient Greek gazetteers are known to have existed since the Hellenistic era. The first known Chinese gazetteer was released by the first century, and with the age of print media in China by the ninth century, the Chinese gentry became invested in producing gazetteers for their local areas as a source of information as well as local pride. The geographer Stephanus of Byzantium wrote a geographical dictionary (which currently has missing parts) in the sixth century which influenced later European compilers. Modern gazetteers can be found in reference sections of most libraries as well as on the internet. 

The "Oxford English Dictionary" defines a "gazetteer" as a "geographical index or dictionary". It includes as an example a work by the British historian Laurence Echard (d. 1730) in 1693 that bore the title "The Gazetteer's: or Newsman's Interpreter: Being a Geographical Index". Echard wrote that the title "Gazetteer's" was suggested to him by a "very eminent person" whose name he chose not to disclose. For Part II of this work published in 1704, Echard referred to the book simply as "the Gazeteer". This marked the introduction of the word "gazetteer" into the English language. Historian Robert C. White suggests that the "very eminent person" written of by Echard was his colleague Edmund Bohun, and chose not to mention Bohun because he became associated with the Jacobite movement.
What is a gazetteer?
A gazetteer is a geographical dictionary