The residential zone is zoned residential for your habitants in area of your town.It is accessed by opening the toolbar, pressing the zone button, and pressing the green house in the drop-down. They cost 100$ per tile, which can add up when you zone many at once.
Buildings on residential zones are where your inhabitants live in your town. Smaller buildings typically hold less inhabitants, and as more inhabitants move in (and you add more buildings to your town), the residential buildings will upgrade in both economic status and density.
Economic Status and Density Edit
Economic status is how wealthy the inhabitants of your buildings are. This ranges from $ to $$$.
Density is how many people can live in the space. For example, a 1x1 building usually holds 2-8 inhabitants- the taller ones hold more people in the same space, making it more dense. Essentially, a larger building in a smaller space is more dense.
Residential Zone Mechanics Edit
Parks, public buildings, education, and services (fire station, police, etc) are fundamental in upgrading your buildings in residential areas, with education being most important. Remember, you cannot directly upgrade any buildings- you can only build more/nicer buildings around your zones and wait for the zoned buildings to upgrade.
The sizes of residential buildings range from 1x1-5x5
In residential zones, buildings begin to upgrade from $ to $$ and $$$ once the first school (typically an elementary school) is built in their rough vicinity.
See Also: Commercial Zone