USA (United States of America)
Search in the USA
Major Cities
The US states and all cities having more than 100,000 inhabitants.
Major Urban Areas
The US states and all urban areas having more than 50,000 inhabitants.
Administrative Division 
The population of the US states and counties (census 1990, 2000, 2010 and estimate 2012) (uses Google Maps; ~6 MB data; fast Internet connection and state-of-the-art browser are recommended).
Urban Areas
The census population of all urbanized areas and urban clusters in the United States of America (uses Google Maps).
Metropolitan Areas
The population of all metropolitan and micropolitan statistical areas according to the definition of 2013 (uses Google Maps).
Combined and Isolated Metropolitan Areas
The population of all combined statistical areas as well as of all isolated metropolitan and micropolitan statistical areas according to the definition of 2013 (uses Google Maps).
Cities, Towns, Places & Counties in the US States
For each state, the cities, towns, places and administrative areas as specified:
New York City Boroughs
The population of the boroughs of New York City.
Census Tracts of Metropolitan Areas
The population and population density of the census tracts of the major (combined) statistical metropolitan areas (uses Google Maps; fast Internet connection and state-of-the-art browser are recommended).