Overview
Star City is a fictional city that appears in stories published by DC Comics, best known as the traditional home of the superheroes known by, or affiliated with, the shared alias of Green Arrow. Beyond that, it is also known to other characters of the DC Universe as both a port city and a haven for artists in many of the media, from print to audio/visual to music. Green Arrow's base of operation was initially New York City. However, during the Silver Age, Green Arrow's home was established as being in Star City, being first mentioned in Adventure Comics #265, before making its first appearance in the following issue.
Established history in the comics
According to several published accounts, Star City was incorporated as a city under its current name over 200 years ago.
Before moving on to service in first Metropolis and later Gotham City, Maggie Sawyer began her career as a police officer in Star City.
The first costumed vigilante to serve as mayor was Thomas "Steelclaw" Bolt, who adopted an undercover persona as a costumed criminal as part of his efforts to bring local crime under control. He died in office of that attempt.
From Wikipedia (CC BY-SA 4.0).