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.
States of Germany of Germany. Only four unincorporated areas are populated, with a total population of about 2,000. The following table gives an overview. In 2000, the number of unincorporated areas was 295, with a total area of . However, the unincorporated areas are continually being incorporated into neighboring municipalities, wholly or partially, most frequently in Bavaria. States of Germany Germany is a federal republic consisting of sixteen states (, plural ; informally and very commonly , plural ). Since today's Germany was formed from an earlier collection of several states, it has a federal constitution, and the constituent states retain a measure