|Known Residents|| Humans|
|First Appearance||The Nightmare Begins|
The City appears in various episodes of Invader Zim, and is a key location to many of the episodes. It appears to be a normal city, and shares several similarities with many big US cities. The city's total population and density are unknown.
The setting of Invader Zim is unclear; while the culture is identical to that of the United States, a map accessed by Almighty Tallest Red showed the City to be located somewhere near Ontario, Canada; perhaps Detroit. However, in the very same episode a zoom-in from space to Zim's Base showed it to be located in the northern region of the U.S., somewhere near Ohio. Additionally, in "Door to Door", the Statue of Liberty and The City (possibly New York City) is destroyed by the Irken Armada.
In an old, defunct webpage of Invader Zim, found on Nickelodeon of Australia, there is a flash file related to Invader Zim. If the Earth is selected in the flash file, the location zooms in and quickly implies that the events occur in Quebec, Canada, pushing the location's mystery even further.
In Issue 33, it was finally mentioned within the series that the location is in fact somewhere in the mainland United States, as it's stated that the winner of the Conglamo-sponsered innovation fair will have their product sold across the country and end up "in every home in America".
City Center Mall
- Main article: City Center Mall
Seen in various episodes, the City Center Mall is a typical mall where items may be bought and rented; like video games, as revealed in "Game Slave 2", and rental DVDs, as revealed in "FBI Warning of Doom". The mall contains a whopping fifty floors, with an undetermined number of stores and services.
The City Center Mall is mainly called "The Mall" by many, including Gaz. The name itself was revealed in "Invasion of the Idiot Dog Brain", where GIR rampaged back to Zim's Base's original location after visiting Krazy Taco. In the process, he vaulted over the City Center Mall with police cars in pursuit.
- Main article: City Cesspool
Crazy House For Boys
Only appearing in "Halloween Spectacular of Spooky Doom", this area is where boys deemed crazy are sent to. Each class at the Skool gets a number of crazy cards that can be used to send people here; Zita uses one on Dib when he's "acting crazier than normal".
The Bank Tower
The Bank Tower is a very tall skyscraper that Zim and GIR climbed in the episode "Walk of Doom", in hopes that Zim would be able to find his base with a view from the peak of the building. When they entered the establishment, a bank worker mistook Zim for the perpetrator of a recent robbery, causing the police to chase after Zim and GIR.
An apartment complex that appeared in "The Sad, Sad Tale of Chickenfoot". Sweaty Pits, as hinted at by the name, is a filthy apartment building where some very questionable individuals live, including Turkeyneck and Chickenfoot. Eric Trueheart was mentioned by Dib while he was searching the list of occupants in search of Chickenfoot, implying that Eric lives in Sweaty Pits.
- Zim actually has successfully destroyed the city on more than one occasion ("The Wettening", "Walk for Your Lives", etc.) only for the damage to be undone by the series' loose continuity.