Demographics of the United States
|It has been suggested that People of the United States be merged into this article or section. (Discuss)|
The 2010 U.S. Census reported 308,745,538 residents, making the United States the third most populous country in the world. It is a very urbanized population, with 82% residing in cities and suburbs as of 2008 (the worldwide urban rate is 50.5%). This leaves vast expanses of the country nearly uninhabited. California and Texas are the most populous states, as the mean center of United States population has consistently shifted westward and southward.
The total fertility rate in the United States estimated for 2009 is 2.01 children per woman, which is below the sub-replacement fertility threshold of 2.1. However, U.S. population growth is among the highest in industrialized countries, since the vast majority of these have below-replacement fertility rates and the U.S. has higher levels of immigration. The United States Census Bureau shows population increases ranging between 0.85% and 0.89% for the twelve-month periods ending in 2009. Nonetheless, though high by industrialized country standards, this is below the world average annual rate of 1.19%.
There were 155.6 million females in the United States in 2009. The number of males was 151.4 million. At age 85 and older, there were more than twice as many women as men. People under 20 years of age made up over a quarter of the U.S. population (27.3%), and people age 65 and over made up one-eighth (12.8%) in 2009. The national median age was 36.8 years. Racially, the U.S. has a White American majority.
The American population more than tripled during the 20th century—at a growth rate of about 1.3% a year—from about 76 million in 1900 to 281 million in 2000. It reached the 200 million mark in 1967, and the 300 million mark on October 17, 2006. Currently, population growth is fastest among minorities as a whole, and according to the Census Bureau’s estimation for 2005, 45% of American children under the age of 5 belonged to minority groups.
Hispanic and Latino Americans accounted for almost half (1.4 million) of the national population growth of 2.9 million between July 1, 2005, and July 1, 2006. Immigrants and their U.S.-born descendants are expected to provide most of the U.S. population gains in the decades ahead.
The Census Bureau projects a U.S. population of 439 million in 2050, which is a 46% increase from 2007 (301.3 million). However, the United Nations projects a U.S. population of 402 million in 2050, an increase of 32% from 2007 (the UN projects a gain of 38% for the world at large). In either case, such growth is unlike most European countries, especially Germany, Russia, Italy, and Greece, or Asian countries such as Japan or South Korea, whose populations are slowly declining, and whose fertility rates are below replacement.
As of May 14, 2011, the United States is estimated to have 4.5% of the world’s population.
Those who graph probability vis a vis consequences would probably agree that a smooth upward curve is the result. Higher probability usually means X coordinate meets Y coordinate somwhere along the curve. In my ignorance I would argue more population more inhabiting marginal areas.
Ron Paul in an interview post his running for Presidential announcement says FEMA should be abolished as encouraging a moral hazard. Thus charting land use and occupancy and locational GIS to dangerous [hazardous] occupancy you would think would be bread and butter for FEMA and even perhaps DHS! Yet as far a I know NO demographer at any civil service grade exists in any unit of FEMA or DHS. Perhaps just as we know mowing down spartina grass in tidal areas might not be important for tidal surges during storms at the level that cause damages indirectly most spartina is destroyed to make way for new types of human occupancy of tidal areas or exploitation often resulting in more disaster outlays. But hey FEMA and DHS have no wetlands botanists and could care less whether that discipline could inform decisions by FEMA that impact the future for the USA.
I would argue for not just tidal biologists and demographers but for economists, statisticians, metrologists, seismologists, anthropologists, geologists, etc. etc. but all kinds of specialists so that FEMA does not continue as a leader in ignorance as to why disaster outlays are accelerating. To some extent Ron Paul is correct, and FEMA does subsidize STATES and their local governments in their erroneous occupancy of hazardous areas by their citizens. The market is NOT functioning because FEMA does not disclose hazards it should be disclosing. That is the problem not post disaster subsidies but post disaster repetitive mistakes. After all mitigation begins with knowledge of hazards and more tools than maps are availabee to disclose hazards.