USA (United States of America)
Search in the USA
Major Cities
The US states and all cities having more than 100,000 inhabitants.
Urban Areas
The US states and all urban areas having more than 50,000 inhabitants.
Metropolitan Areas
The US states and all metropolitan statistical areas.
Combined Metropolitan Areas
The US states and all combined metropolitan statistical areas.
New York City Boroughs
The population of the boroughs of New York City.
Administrative Division 
The census population of the US states and counties (uses Google Maps; ~6 MB data; fast Internet connection and state-of-the-art browser are recommended).
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).
Cities, Towns, Places & Counties in the US States
For each state, the cities, towns, places and administrative areas as specified:
All US Places by Map
All places & counties (C 2010), all incorporated places & counties (E 2009) and all counties (C 2010) with population, density and population change by Google Maps (a fast Internet connection is recommended).