Keller is an affluent city located in the northwest portion of the Dallas–Fort Worth metropolitan area in the US State of Texas that advertises itself as “successfully balancing big-city comforts with small-town charm”. Its density of 2,200 people per square mile and plenty of natural land is complemented by its recently-constructed town hall, municipal service center, and award-winning recreation and aquatic center. The 2010 census recorded its population as 39,627, which ranks modestly as 74th in the state.
Source: Wikipedia