United States of America

The US states and all cities having more than 100,000 inhabitants.
The US states and all urban areas having more than 50,000 inhabitants.
The population of the US states and counties (census 1990, 2000, 2010 and estimate 2012) (~6 MB data; fast Internet connection and state-of-the-art browser are recommended).
The census population of all urbanized areas and urban clusters in the United States of America.
The population of all metropolitan and micropolitan statistical areas according to the definition of 2013.
The population of all combined statistical areas as well as of all isolated metropolitan and micropolitan statistical areas according to the definition of 2013.
For each state, the cities, towns, places and administrative areas as specified:

census 1980 - 2010, est. 2012
(boundaries of 2012)

census 2000 & 2010, est. 2012
(boundaries of 2012)
census 1990, 2000 & 2010
(boundaries of 2010)

The population of the boroughs of New York City.
The population and population density of the census tracts of the major (combined) statistical metropolitan areas (fast Internet connection and state-of-the-art browser are recommended).