Sector V Headquarters

Sector V Headquarters is the usual fictional setting in Codename: Kids Next Door. It is Sector V's treehouse, growing above the Uno Household (Numbuh 1 and his parents' house).

Sector V Treehouse

The Sector V Treehouse is the treehouse that is the home to the Sector V team, Numbuhs 1, 2, 3, 4 and 5. The tree that the Treehouse is on is 560 years old. A running gag is that someone keeps taking away the treehouse (Operations: END and NAUGHTY). Many of the KND missions take place there. It is unknown exactly where Sector V is located but there are mountains and water nearby, as a beach is shown in several episodes. It is designed by Numbuh Two.

Uno Household

The Uno Household is a house where Numbuh One lives with his mother and father. Not much is known AbOUT this place, other than the fireplace can transform into the F.L.I.E.R.P.L.A.C.E. (Op. SNOWING). In the movie Operation Z.E.R.O. it is revealed that the house is also the ultra SUPER secret house of coolness and the resting place for The Book of KND which was first discovered by his father and probably why the tree is now on top of his house.

Location

The location is never revealed, except that is in the United States. Since there is a beach it is located near the ocean and there are also mountains. Operation: Z.E.R.O. suggests it is in the northeastern U.S.A. Possibilities are Vermont or Virginia, since they start with "V" as in Sector V. However, when analyzed closer, it appears to be in northwestern Pennsylvania, possibly Venango or New York, possibly in Van Buren Bay, Versailles, Versailles or cities such as the preceding. Another possibility is a fictional town called "Gallagher", since characters go to Gallagher Elementary School. There is also a Gallagher Elementary School in Virginia City, Nevada.

• Virginia-Virginia is on the coast and has mountains. Also, in Operation: W.H.I.T.E.-H.O.U.S.E. Numbuh 1 is able to walk to his treehouse from Washington D.C.