New Chicago was a settlement on Mars, one of the Martian Colonies. Newstime correspondent Gannet Brooks and Earth Starfleet officer Travis Mayweather met here in 2160 during the Earth-Romulan War. (ENT novel: The Romulan War: To Brave the Storm) As an adult, Ghazzat Hashim native Iwan Alvarez wondered what his life would have been like if his family had stayed on Mars in the 2280s. He supposed that he would have a quiet civilian medical practice in New Chicago instead of serving aboard starships like the USS Avenger. (Star Trek: Avenger: "Nearly a Valediction")