From Bulbapedia, the community-driven Pokémon encyclopedia.
Mintale Town (Japanese: ハツカタウン Hatsuka Town) is the setting of Pokémon Channel.
Although its location in relation to the rest of the Pokémon world is never stated, Mintale Town is popularly believed to be located in or near Kanto due to the appearance of Viridian Forest. Additionally, Cobalt Coast is also a location in Hey You, Pikachu!, which is confirmed to take place in Kanto.
There are four distinct locations in Mintale Town, which are all connected by bus routes. Bus routes require different bus passes, which can be purchased from the Shop 'N Squirtle channel.
Mintale Town is the home to many wild Pokémon. Wild Pokémon appear to be able to move about the region freely.
Though no humans are shown living in Mintale Town besides Professor Oak and the player (from a first-person perspective), the presence of buildings, modern amenities and bus routes suggest that it is the home of many humans as well.
The Pokémon of Mintale Town, rather than appearing in Tall grass, they appear everywhere in town. These Pokémon befriend each other by answering a question about them correctly and giving each other Platinum Nice Cards. Other ways of Pokémon socialization are eating fruit together, giving each other gifts and watching the TV.