|First appearance||Showcase #22 (September–October 1959)|
|Notable characters||Hal Jordan|
Coast City is a city created by John Broome and Gil Kane that appears in stories published by DC Comics. It is depicted most often as the home of the Silver Age version of the superhero Green Lantern, Hal Jordan. Ferris Aircraft is one of the largest employers in Coast City.
Coast City, which first appeared in Showcase #22 in September–October 1959, was a city located in California. This made it one of the few fictional cities in the DC Universe to have a specifically given location from the start.
Coast City was usually portrayed as an analogue of Los Angeles and San Diego.Green Lantern: Rebirth identified it as being in Northern California, though recent issues of Green Lantern listed it as being twenty miles from Edwards Air Force Base.
In the 1990s, Coast City was destroyed, with nearly all of its residents – then numbered at seven million – by Mongul. Mongul's gigantic ship appeared over Coast City and released thousands of spherical bombs which detonated simultaneously. It was then revealed that Mongul was doing the bidding of former astronaut Hank Henshaw, better known as the Cyborg Superman. Mongul and Henshaw built Engine City in Coast City's ashes, as part of a plot to turn Earth into the new Warworld, the two intending to strike a double blow against the recently deceased Superman by claiming his world for themselves and framing him as the agent responsible for his planet's destruction. This plan was stopped by the real Superman after his resurrection, with the help of Superboy, Steel, and Hal Jordan, who had just returned from space to find his home destroyed.
Killed in the blast were numerous supporting characters of the Green Lantern comic books, including Kari Limbo and several Ferris Aircraft employees. Jordan attempted to resurrect the city using his ring and learned that his first girlfriend had also died in the blast, but his ring's power was revoked by the Guardians before he could make it last for more than a few moments.
In the near-future, a government time-travel experiment attempted to take the first step to prove their worth by going back in time to prevent Henshaw becoming the Cyborg and destroying Coast City, but Booster Gold was forced to go back in time and stop the renegade time-traveler to preserve the timeline. During his time in the past, Booster saved a little girl who would go on to become his adopted daughter (after Skeets confirmed that history had no record of her death in the city's destruction), as well as his time-lost sister Michelle Carter, but they were unable to save her then-boyfriend as history recorded that he had died in the blast.
The city's destruction drove Hal Jordan to become the villain Parallax, due to a mental breakdown from grief, though it was later revealed that he was also under the influence of the yellow emotional entity named Parallax. Jordan slaughtered nearly all the Green Lanterns, absorbed the energies of the Power Battery, and tried to rewrite history. This led to the appointment of a new Green Lantern, Kyle Rayner. A memorial to Coast City's victims was erected on the site of the city with the help of most of the major superheroes of the period.
For a time, an alien city named Haven that had crashed on Earth resided on top of the ruins of Coast City.
When Hal Jordan died saving the world, the heroes memorialized him. An eternal flame was constructed in the ruins of the city. Swamp Thing used his powers to fill the surrounding area with greenery.
When Hal Jordan from early in his career was pulled into the future during an encounter with Kyle Rayner, a version of Parallax from when he attempted to restart history attempted to convince his younger self to go along with his plans by taking himself, his younger self and Kyle back to Coast City at the moment of its own destruction, freezing time in the second before the bombs struck. Despite his future self showing him the people who would die when the city was destroyed, the younger Hal refused to go along with Parallax's plan, the two fighting in the frozen city before Kyle convinced them that they both had to return to their own times.
The villain Remnant attempted to depict Superman as a devil by blaming him for the deaths caused in Doomsday's rampage, particularly the fact that so few people acknowledged the others who had died in the rampage in favour of 'focusing' on Superman's resurrection. Superman confronted a reporter writing an article about the anniversary of the rampage, complimenting him on his ability to challenge Superman with hard questions, and asked him to consider one final question: if Superman weren't around, would there be fewer Doomsdays (monsters seeking to confront Superman), or more Coast Cities (disasters that occurred because Superman wasn't available to prevent them)?
It was later revealed that Hank Henshaw chose to destroy Coast City to erase his former life on Earth; he and his wife, Terri Henshaw, were previous residents of Coast City.
Coast City was subsequently rebuilt in the wake of Jordan's resurrection. While the Spectre, Hal Jordan, and the Parallax parasite were wrestling for control of the Spectre's powers, all roads, street signs, and Jordan's apartment reappeared. 'Haven' also vanished from the site.
Populating the rebuilt city became one of the latest initiatives of Jonathan Vincent Horne, President of the United States. Charities and industries around the world, including Wayne Enterprises, contributed to a fund for rebuilding the city. Despite all those efforts, Coast City remained a ghost town due to its reputation as the site of a mass murder. Among the exceptions was Hal Jordan, who lived in Coast City when he wasn't working at nearby Edwards Air Force Base as one of their test pilots. Hal's nephew attends a school with a student body of fewer than twenty.
One year after the events of Infinite Crisis, Coast City finished reconstruction. During the Sinestro Corps War, it was targeted for destruction by Sinestro and the terrorist organization that bears his name. Hal Jordan used his ring to contact every citizen, urging them to evacuate the city. En masse, they decided to stay. Many shined green lights from their homes to indicate their support. Jordan and Kyle Rayner defended the city from the rogue Corps' attacks, and Sinestro was defeated on the rooftops of Coast City.
In the aftermath, the city's population rose dramatically, and many businesses and citizens returned. Available living space was rapidly filled. The new Coast City was dubbed "The City Without Fear" by the news media. The damage from the Sinestro Corps battle was repaired by Green Lantern John Stewart, with help from the Green Lantern Corps and Earth's superheroes.
As of the beginning of the 2010 miniseries Blackest Night, the population had increased to 2,765,321. A new memorial was erected to commemorate the city's history; it includes a green lantern, lighted by Hal Jordan, John Stewart, Guy Gardner, and Kyle Rayner. In the course of the story, the Black Lantern Corps' central power battery teleports to just outside Coast City, bringing forth the demon Nekron, (the black personification of Death and longtime enemy of the Green Lantern Corps) the undead Guardian Scar, and Black Hand. The Anti-Monitor also emerges from the battery but is defeated before exiting. Nekron then sends forth black rings into the city's memorial, reanimating the dead as Black Lanterns. Nekron is then defeated in the streets of Coast City.
The population is again shown at 2,765,321, as a murderous version of Bruce Wayne attacks the city. This Wayne, wielding a Green Lantern ring, disposes of Hal Jordan and sends demonic forms to attack the populace. A later view of Coast City shows many skyscrapers knocked off their foundation.
In an alternate future Coast City is once again abandoned after half of it fell into the ocean along with most of California. What remains is now the domain of Poison Ivy, who has turned it into a greenhouse paradise. 
In the 1970s, an "Ask the Answer Man" column placed Coast City in California. The Atlas of the DC Universe, published by Mayfair Games in 1990, placed Coast City in northern California, between San Francisco and Green Arrow's Star City.
Ferris Aircraft is an aerospace company which Hal Jordan worked for as a test pilot, it is located twenty five miles out from the city. His romantic interest, Carol Ferris, was the company's manager. Coast City also included an extensive beach, and was a popular spot for surfing. It also had a nearby mountain, called 'Mt. Pacific'.
In other media
- In the Smallville second season episode "Redux", Clark says that his adoptive maternal grandfather retired with his wife to Coast City. In the seventh season of Smallville, Kara says she has just returned after spending a weekend with Jimmy Olsen in Coast City.
- Coast City briefly appeared in the Batman: The Brave and the Bold episode "Hail the Tornado Tyrant!". The Tornado Tyrant attempted to wipe it out with a massive tidal wave, but was stopped by Batman and Red Tornado. It also appeared in "Sidekicks Assemble!" by being the place where Ra's al Ghul infests the city with his evil plants. It later appears in "Scorn of the Star Sapphire" when the Zamarons take control of Carol Ferris.
- Coast City appears in Green Lantern: The Animated Series.
- Coast City is referenced in various TV series that take place in the Arrowverse:
- In Arrow, Coast City is mentioned in the episodes "Legacies", "The Huntress Returns", "Corto Maltese", and the season 3 finale "My Name is Oliver Queen". In "Legacies", Tommy Merlyn asks Laurel if she would like to go with him on his private jet to Coast City. In "The Huntress Returns", Oliver's detective girlfriend gets shot by Huntress and says she's going to move in with her sister in Coast City. In "My Name is Oliver Queen", during a flashback scene, Oliver is shown boarding a boat bound for Coast City; a flashback in "Green Arrow" shows Oliver adopting an early version of the Hood disguise in Coast City, running past an advertisement sign proclaiming "In brightest day, In blackest night, Come to Coast City, When money's tight". In the season 4 finale episode "Schism", John Diggle mentioned to Lyla that their daughter Sara is in an ARGUS bunker in Coast City.
- Coast City is mentioned in The Flash episode "Fallout" when Iris West asks Caitlin Snow where Ronnie Raymond is from. The city itself is also briefly seen for the first time in the Arrow/Flash universe (Arrowverse) in the episode "Who Is Harrison Wells?" when Barry Allen runs to the city to get pizza, allegedly the "best in the west". In the episode "Enter Zoom", Linda Park moved to the city after being kidnapped by Zoom and his battle with Barry.
- Coast City was mentioned by Cisco Ramon in the third episode of Vixen.
- Coast City was mentioned in the episode "Progeny" of Legends of Tomorrow by Hawkman as another place to escape from Vandal Savage.
- Coast City was mentioned in the episode "Emergency Punch Up" of Powerless as a destination for the company's retreat.
- Coast City is mentioned by name by Hal Jordan, in the animated film Green Lantern: First Flight, when he talks to Appa Ali Apsa. Hal compares Green Lanterns to cops in their precincts, and says his uncle was a cop in the Coast City police force.
- Coast City appears in the 2011 film Green Lantern. The name of the city appears during a television newscast.
- Coast City is mentioned in the 2014 film Justice League: War, but when mentioned and shown the location, Coast City appeared to be located somewhere in the southern half of Florida.
- A newspaper clipping of "The Coast City Ledger" is shown in a mid-credits scene of the 2018 movie Aquaman.
- In the Batman Begins video game, a corrupt cop can be heard saying, "Yeah, I bought the boat. Me and the wife are taking it over to Coast City next weekend".
- Coast City appears in DC Universe Online.
- Coast City is referenced in Batman: Arkham Origins, where on Burnley is a billboard with the names of cities, including Coast City.
- Comic Vine
- A Guide to the Fictional Cities of the DC Universe
- Superman (vol. 2) #80
- Superman (vol. 2) #82
- Green Lantern (vol. 3) #81
- Green Lantern Vol. 3 #100
- Green Lantern Vol. 3 #105
- Green Lantern Vol. 3 #106
- Green Lantern (vol. 4) # 13
- Green Lantern Rebirth #3 (2004)
- Green Lantern (vol. 4) #7
- Green Lantern (vol. 4) # 4-5
- Green Lantern (vol. 4) #23-25
- Green Lantern (vol. 4) #26.
- Final Crisis: Rage of the Red Lanterns
- Blackest Night # 1
- Blackest Night #4 (2010)
- Blackest Night" #8 (2010)
- Batman: The Dawnbreaker (2017)
- Batman: The Merciless (2017)
- Old Lady Harley #5 (2019)
- Bob Rozakis, "Ask the Answer Man," Daily Planet, Detective Comics #470 (June 1977)
- Green Lantern Rebirth
- Green Lantern #40 (vol. 1, Oct. 1965)
- Adventures of Superman (volume 1) #503, August 1993.
- Coast City on Smallville Wiki