was the capital city of the Martian Colonies
novel: The Captain's Daughter
- Star Trek Star Charts asserts that Utopia Planitia is the capital.
Nikolai Barstow was born there in 2229 (Star Trek: Shadowstar Station), and Hayden Pope was reportedly born there in 2269. (Star Trek: Avenger: "Belonging")
The target of the first attack of the Caine was the government building of Ares City. (Dimensional Prophecy of Zohar)
Ares City article at Memory Beta, the non-canon Star Trek wiki.