States of Austria arable terrain. The other five states, in contrast, are located in the Alps and thus are comparatively unsuitable for agriculture. Their terrain is also relatively unfavourable to heavy industry and long-distance trade. Accordingly, the population of what now is the Republic of Austria has been concentrated in the former four states since prehistoric times. Austria's most densely populated state is the city-state of Vienna, the heart of what is Austria's only metropolitan area. Lower Austria ranks only fourth with regard to population density even though it contains Vienna's suburbs; this is due to large areas of land being predominantly agricultural.
Demography of the United States about 15% of Americans moved. Most of these, 67%, moved within the same county. Of the 33% who moved beyond local county boundaries, 13% of those moved more than . Lists: Income: Population: Demography of the United States The United States is the third most populous country in the world with an estimated population of 328,953,020 . It is highly urbanized, with 82.3% of the population residing in cities and suburbs. Large urban clusters are spread throughout the eastern half of the United States (particularly the Great Lakes area, northeast, east, and southeast) and the western tier states; mountainous areas,