Dwarves reside in the Austro Hungarian Empire (Eastern Europe, Netherlands, and whatever left of Russia I can think of) Dwarves rarely expand their kingdoms, at least not horizontally speaking, so they have no colonies. They rarely meddle in the affairs of other kingdoms and remain mostly neutral. They have severe and strict control over all use of magic and mostly use it for mining and crafting. Dwarves in other places are common as laborers, miners, and businessmen.
Dwarves are exactly as they are in the SRD. They live up to 160 years and follow the human age table multiplied by 1.7