Industrial Zones generate the most profit, but create a lot of pollution.

Industry is what really drives your city and creates the most profit of the three zones. By providing jobs, industries provide money for your residents. Industries supply Commercial buildings with goods. Money keeps Sims happy and allows them to shop, which in turn makes the Commercial zones prosper.

Industrial zones also produce the most amount of pollution of the three zones. Because of this, it’s a good idea to build your city’s industry away from the residential parts of town.