This entry provides an area comparison based on total area equivalents. Most entities are compared with the entire US or one of the 50 states based on area measurements (1990 revised) provided by the US Bureau of the Census. The smaller entities are compared with Washington, DC (178 sq km, 69 sq mi) or The Mall in Washington, DC (0.59 sq km, 0.23 sq mi, 146 acres).
Largest cities including most recent population (estimates included). Populations are figures only within the city limits, unless otherwise specified. All populations are from 2001 t0 2005 unless otherwise specified.
volcanic activity occurs on the Heard and McDonald Islands
situated on top of a hotspot, experiences severe volcanic activity; Eyjafjallajokull (elev. 1,666 m, 5,466 ft) erupted in 2010, sending ash high into the atmosphere and seriously disrupting European air traffic; scientists continue to monitor nearby Katla (elev. 1,512 m, 4,961 ft), which has a high probability of eruption in the very near future, potentially disrupting air traffic; Grimsvotn and Hekla are Iceland's most frequently active volcanoes; other historically active volcanoes include Askja, Bardarbunga, Brennisteinsfjoll, Esjufjoll, Hengill, Krafla, Krisuvik, Kverkfjoll, Oraefajokull, Reykjanes, Torfajokull, and Vestmannaeyjar
Population density is midyear population divided by land area in square kilometers. Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship--except for refugees not permanently settled in the country of asylum, who are generally considered part of the population of their country of origin. Land area is a country's total area, excluding area under inland water bodies, national claims to continental shelf, and exclusive economic zones. In most cases the definition of inland water bodies includes major rivers and lakes.
Rural population density is the rural population divided by the arable land area. Rural population is calculated as the difference between the total population and the urban population. Arable land includes land defined by the FAO as land under temporary crops (double-cropped areas are counted once), temporary meadows for mowing or for pasture, land under market or kitchen gardens, and land temporarily fallow. Land abandoned as a result of shifting cultivation is excluded.
Capital cities including most recent population (estimates included). Populations are figures only within the city limits, unless otherwise specified. All populations are from 2001 t0 2005 unless otherwise specified.