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Source : United Nations Department of Economic and Social Affairs: Population Division
.
During 2017 United States of America (USA) population is projected to increased by 2 450 697 people and reach 327 908 413 in the beginning of 2018. The natural increase is expected to be positive, as the number of births will exceed the number of deaths by 1 418 996. If external migration will remain on the previous year level, the population will be increased by 1 031 701 due to the migration reasons. It means that the number of people who move into United States of America (USA) (to which they are not native) in order to settle there as permanent residents (immigrants) will prevail over the number of people who leave the country to settle permanently in another country (emigrants).
According to our estimations, daily change rates of United States of America (USA) population in 2017 will be the following:
As of 1 January 2017, the population of United States of America (USA) was estimated to be 325 457 716 people. This is an increase of 0.75 % (2 432 381 people) compared to population of 323 025 335 the year before. In 2016 the natural increase was positive, as the number of births exceeded the number of deaths by 1 408 390. Due to external migration, the population increased by 1 023 990. The sex ratio of the total population was 0.975 (975 males per 1 000 females) which is lower than global sex ratio. The global sex ratio in the world was approximately 1 016 males to 1 000 females as of 2016.
Below are the key figures for United States of America (USA) population in 2016:
United States of America (USA) population density is 33.8 people per square kilometer as of July 2017.
Density of population is calculated as permanently settled population of United States of America (USA) divided by total area of the country.
Total area is the sum of land and water areas within international boundaries and coastlines of United States of America (USA).
The total area of United States of America (USA) is 9 632 030 km2 according to the United Nations Statistics Division
.
As of the beginning of 2017 according to our estimates United States of America (USA) had the following population age distribution:
| 20.1 | 66.8 | 13.1 |
| - percentage of population under 15 | |
| - percentage of population between 15 and 64 years old | |
| - percentage of population 65+ |
In absolute figures (estimate):
We prepared a simplified model of the population distribution pyramid which is broken down into 3 main age groups. The groups are the same as we used above: population under 15, between 15 and 64 and population which is over 65 year old.
| 65+ |
| 15-64 |
| 0-14 |
| male | female | |||
Note: The pyramid provided is not corresponding to data given above because the age groups have different number of years.
As we can see the United States of America (USA) population pyramid has a stationary type. Countries with such type of pyramid usually have declining birth rate and relatively low death rate. Which is more common for developed countries.
Source: The estimation data for section "United States of America (USA)
age structure" is based on the latest demographic and social statistics by United Nations Statistics Division
.
Dependency ratio of population is a ratio of people who are generally not in the labor force (the dependents) to workforce of a country (the productive part of population). The dependent part includes the population under 15 years old and people aged 65 and over. The productive part of population accordingly consists of population between 15 and 64 years.
This ratio shows the pressure on productive population produced by the dependent part of population.
The total dependency ratio of population in United States of America (USA) is 49.7 %.
The value of 49.7 % is relatively low. It shows that the dependent part of population is less than a half of the working part. In other words the working population (labor force) in United States of America (USA) must provide goods for itself and cover expenditure on children and aged persons. And this part of population is less than 50% of working population. The value of less than 50% means that the pressure on productive population in United States of America (USA) is relatively low.
Child dependency ratio is a ratio of people below working age (under 15) to workforce of a country.
Child dependency ratio in United States of America (USA) is 30.1 %.
Aged dependency ratio is a ratio of people above working age (65+) to workforce of a country.
Aged dependency ratio in United States of America (USA) is 19.7 %.
Source: The estimation data for section "United States of America (USA)
age dependency ratio" is based on the latest demographic and social statistics by United Nations Statistics Division
.
Life expectancy at birth is one of the most important demographic indicator. It shows the number of years a newborn infant would live assuming that birth and death rates will remain at the same level during the whole lifetime.
Total life expectancy (both sexes) at birth for United States of America (USA) is 78.4 years.
This is above the average life expectancy at birth of the global population which is about 71 years
(according to Population Division of the Department of Economic and Social Affairs of the United Nations).
Male life expectancy at birth is 75.9 years.
Female life expectancy at birth is 80.9 years.
The data is given as of 1st of January of an year.
| Year | Population | Growth Rate |
|---|---|---|
| 1951 | 158 846 898 | N/A % |
| 1952 | 161 080 581 | 1.41 % |
| 1953 | 163 611 061 | 1.57 % |
| 1954 | 166 370 881 | 1.69 % |
| 1955 | 169 298 212 | 1.76 % |
| 1956 | 172 336 850 | 1.79 % |
| 1957 | 175 436 215 | 1.80 % |
| 1958 | 178 551 360 | 1.78 % |
| 1959 | 181 642 980 | 1.73 % |
| 1960 | 184 677 436 | 1.67 % |
| 1961 | 187 626 800 | 1.60 % |
| 1962 | 190 468 893 | 1.51 % |
| 1963 | 193 187 311 | 1.43 % |
| 1964 | 195 771 410 | 1.34 % |
| 1965 | 198 216 220 | 1.25 % |
| 1966 | 200 516 502 | 1.16 % |
| 1967 | 202 671 277 | 1.07 % |
| 1968 | 204 700 347 | 1.00 % |
| 1969 | 206 643 460 | 0.95 % |
| 1970 | 208 542 558 | 0.92 % |
| 1971 | 210 421 860 | 0.90 % |
| 1972 | 212 288 714 | 0.89 % |
| 1973 | 214 156 208 | 0.88 % |
| 1974 | 216 047 383 | 0.88 % |
| 1975 | 217 982 713 | 0.90 % |
| 1976 | 219 978 364 | 0.92 % |
| 1977 | 222 042 019 | 0.94 % |
| 1978 | 224 165 164 | 0.96 % |
| 1979 | 226 325 530 | 0.96 % |
| 1980 | 228 499 906 | 0.96 % |
| 1981 | 230 676 996 | 0.95 % |
| 1982 | 232 859 829 | 0.95 % |
| 1983 | 235 057 918 | 0.94 % |
| 1984 | 237 283 092 | 0.95 % |
| 1985 | 239 547 890 | 0.95 % |
| 1986 | 241 861 787 | 0.97 % |
| 1987 | 244 228 713 | 0.98 % |
| 1988 | 246 645 306 | 0.99 % |
| 1989 | 249 102 999 | 1.00 % |
| 1990 | 251 594 303 | 1.00 % |
| 1991 | 254 107 485 | 1.00 % |
| 1992 | 256 637 683 | 1.00 % |
| 1993 | 259 217 813 | 1.01 % |
| 1994 | 261 914 372 | 1.04 % |
| 1995 | 264 788 426 | 1.10 % |
| 1996 | 267 879 376 | 1.17 % |
| 1997 | 271 183 045 | 1.23 % |
| 1998 | 274 618 481 | 1.27 % |
| 1999 | 278 042 449 | 1.25 % |
| 2000 | 281 313 271 | 1.18 % |
| 2001 | 284 345 970 | 1.08 % |
| 2002 | 287 133 523 | 0.98 % |
| 2003 | 289 738 165 | 0.91 % |
| 2004 | 292 268 184 | 0.87 % |
| 2005 | 294 835 261 | 0.88 % |
| 2006 | 297 500 077 | 0.90 % |
| 2007 | 300 258 236 | 0.93 % |
| 2008 | 303 064 548 | 0.93 % |
| 2009 | 305 852 552 | 0.92 % |
| 2010 | 308 554 066 | 0.88 % |
| 2011 | 311 133 269 | 0.84 % |
| 2012 | 313 594 917 | 0.79 % |
| 2013 | 315 967 692 | 0.76 % |
| 2014 | 318 292 277 | 0.74 % |
| 2015 | 320 611 133 | 0.73 % |
| 2016 | 323 025 335 | 0.75 % |
| 2017 | 325 457 716 | 0.75 % |
The data is given as of 1st of January of an year.