Birth rate

Birth rate - Wikipedia, the free encyclopedia

Birth rate

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Not to be confused with Total fertility rate.
Countries by crude birth rate (CBR) in 2008

The birth rate (technically, births/population rate) is the total number of births per 1,000 of a population in a year.1 The rate of births in a population is calculated in several ways: live births from a universal registration system for births, deaths, and marriages; population counts from a census, and estimation through specialized demographic techniques. The birth rate (along with mortality and migration rate) are used to calculate population growth.

The crude birth rate is the number of births per 1,000 people per year.2 Another term used interchangeably with birth rate is natality.3 When the crude death rate is subtracted from the crude birth rate, the result is the rate of natural increase (RNI).4 This is equal to the rate of population change (excluding migration).4

The total (crude) birth rate (which includes all births)—typically indicated as births per 1,000 population—is distinguished from an age-specific rate (the number of births per 1,000 persons in an age group).5 The first known use of the term "birth rate" in English occurred in 1859.6

World historical and predicted crude birth rates (1950–2050)
UN, medium variant, 2008 rev.7
Years CBR Years CBR
1950–1955 37.2 2000–2005 21.2
1955–1960 35.3 2005–2010 20.3
1960–1965 34.9 2010–2015 19.4
1965–1970 33.4 2015–2020 18.2
1970–1975 30.8 2020–2025 16.9
1975–1980 28.4 2025–2030 15.8
1980–1985 27.9 2030–2035 15.0
1985–1990 27.3 2035–2040 14.5
1990–1995 24.7 2040–2045 14.0
1995–2000 22.5 2045–2050 13.4

In 2012 the average global birth rate was 19.15 births per 1,000 total population,8 compared to 20.09 per 1,000 total population in 2007.9

The raw birth rate (not births/population rate) is 4.3 births/second for the world (2014 est.).10

Political issues

The birth rate is an issue of concern and policy for national governments. Some (including those of Italy and Malaysia) seek to increase the birth rate with financial incentives or provision of support services to new mothers. Conversely, other countries have policies to reduce the birth rate (for example, China's one-child policy). Measures such as improved information on birth control and its availability have achieved similar results in countries such as Iran.

There has also been discussion on whether bringing women into the forefront of development initiatives will lead to a decline in birth rates. In some countries, government policies have focused on reducing birth rates by improving women's rights, sexual and reproductive health. Typically, high birth rates are associated with health problems, low life expectancy, low living standards, low social status for women and low educational levels. Demographic transition theory postulates that as a country undergoes economic development and social change its population growth declines, with birth rates serving as an indicator.

At the 1974 World Population Conference in Bucharest, Romania, women's issues gained considerable attention. Family programs were discussed, and 137 countries drafted a World Population Plan of Action. As part of the discussion, many countries accepted modern birth control methods such as the birth control pill and the condom while opposing abortion.citation needed In 1994, another action plan was drafted in Cairo, Egypt, under the aegis of the United Nations. Population and the need to incorporate women into the discourse were discussed; it was agreed that improvements in women's status and initiatives in defense of reproductive health and freedom, the environment, and sustainable socioeconomic development were needed.

Birth rates ranging from 10–20 births per 1,000 are considered low, while rates from 40–50 births per 1,000 are considered high.citation needed There are problems associated with both extremes. High birth rates may stress government welfare and family programs. Additional problems faced by a country with a high birth rate include educating a growing number of children, creating jobs for these children when they enter the workforce, and dealing with the environmental impact of a large population. Low birth rates may stress the government to provide adequate senior welfare systems and stress families who must support the elders themselves. There will be fewer children (and a working-age population) to support an aging population.

National birth rates

According to the CIA's The World Factbook, the country with the highest birth rate is Niger (at 51.26 births per 1,000 people). The country with the lowest birth rate is Japan, at 7.64 births per thousand. (Hong Kong, a special administrative region of China, has a birth rate of 7.42 per thousand.)

Compared with the 1950s (when the birth rate was 36 per thousand),11 the birth rate has declined by 16 per thousand. In July 2011, the U.S. National Institutes of Health announced that the adolescent birth rate continues to decline.12

Birth rates vary within a geographic area. In Europe as of July 2011, Ireland's birth rate is 16.5 per 1000 (3.5 percent higher than the next-ranked country, the UK). France has a birth rate of 12.8 per thousand, while Sweden is at 12.3.13unreliable source?

In July 2011, the UK's Office for National Statistics (ONS) announced a 2.4 percent increase in live births in the UK in 2010.14 This is the highest birth rate in the UK in 40 years.14 However, the UK record year for births and birth rate remains 1920 (when the ONS reported over 957,000 births to a population of "around 40 million").15 In contrast, the birth rate in Germany is only 8.3 per thousand—so low that the UK and France (which have smaller populations) had more births in the past year.16

Birth rates also vary in a geographic area among demographic groups. For example, in April 2011 the U.S. Centers for Disease Control and Prevention announced that the birth rate for women over age 40 in the U.S. rose between 2007 and 2009 and fell in every other age group during the same period.17

In August 2011 Taiwan's government announced that its birth rate declined in the previous year, despite the fact that the government implemented approaches to encourage fertility.18

United States

According to U.S. federal-government data released in March 2011, births fell four percent from 2007 to 2009 (the largest drop in the U.S. for any two-year period since the 1970s).19 Births have declined for three consecutive years, and are now seven percent below the 2007 peak.20 This drop has continued through 2010, according to data released by the U.S. National Center for Health Statistics in June 2011.21 Experts have suggested that this decline is a reflection of unfavorable economic conditions.22 The connection between birth rate and economic conditions stems from the fact that American birth rates have fallen to levels comparable to those during the Great Depression during the 1930s.23 A state-level look at fertility, based on a report published by the Pew Research Center in October 2011, points out the strong correlation between lower birth rates and economic distress. In 2008, North Dakota had the nation’s lowest unemployment rate (3.1 percent) and was the only state to show an increase (0.7 percent) in its birth rate. All other states either remained the same or declined.

The research center’s study also found evidence of a correlation between economic difficulties and fertility decline by race and ethnicity. Hispanics (particularly affected by the recession) have experienced the largest fertility decline, particularly compared to Caucasians (who have less economic hardship and a smaller decline in fertility). In 2008–2009 the birth rate declined 5.9 percent for Hispanic women, 2.4 percent for African American women and 1.6 percent for white women. This may be associated with the fact that Hispanics have suffered the most loss of wealthcitation needed since the beginning of the recession, and have a high unemployment rateaccording to whom?

Other factors (such as women’s labor-force participation, contraceptive technology and public policy) make it difficult to determine how much economic change affect fertility. Research suggests that much of the fertility decline during an economic downturn is a postponement of childbearing, not a decision to have fewer (or no) children; people plan to “catch up” to their plans of bearing children when economic conditions improve. Younger women are more likely than older women to postpone pregnancy due to economic factors, since they have more years of fertility remaining.24

Teenage birth rates in the U.S. are at the lowest level in U.S. history.25 Teen birth rates in the U.S. have decreased from 1991 through 2012 (except for an increase from 2005–2007).25 The other aberration from this otherwise-steady decline in teen birth rates is the six percent decrease in birth rates for 15–19 year olds between 2008 and 2009.25 Despite the decrease, U.S. teen birth rates remain higher than those in other developed nations.25 Racial differences affect teen birth and pregnancy rates; American Indian/Alaska Native, Hispanic, and non-Hispanic black teen pregnancy rates are more than double the non-Hispanic white teenage birth rate.26


The United States population growth is at an historical low level as the United States current birth rates are the lowest ever recorded.27 The low birth rates in the contemporary United States can possibly be ascribed to the recession, which led women to postpone having children and fewer immigrants coming to America. The current US birth rates are not high enough to maintain the size of the U.S. population, according to The Economist.2829

Measurement methods

The crude birth rate may be measured as the number of births in a given population during a given time period (such as a calendar year), divided by the total population and multiplied by 1,000.

According to the United Nations' World Population Prospects: The 2008 Revision Population Database, the crude birth rate is the number of births over a given period, divided by the person-years lived by the population over that period. It is expressed as the number of births per 1,000 population.

Another frequently-used indicator is the total fertility rate, the average number of children born to a woman during her lifetime. The total fertility rate is generally a better indicator of current fertility rates because unlike the crude birth rate, it is not affected by the age distribution of the population. Fertility rates tend to be higher in less economically-developed countries and lower in more economically-developed countries.

Factors affecting birth rate

Different cultures also affect the birth rate. Some religions perhaps would prefer a certain number of children or even none at all until a certain age.

Demographic transition

Demographic transition refers to the decline in population mortality and fertility decline with social and economic development. The two major factors affecting demographic transition are the crude birth rate (CBR) and the crude death rate (CDR).

Demographic transition may be considered in four stages. During the first and second stages, the birth rate remains high because people still live in agrarian cultures and require farm labour; infant mortality is high. During the third stage, the birth rate begins to decline due to women's increasing participation outside the home and a reduced need for farm labour. During the fourth stage the birth rate is sustained at a low level, with some countries having rates below the replacement level in other countries.

See also

Case studies


  1. ^ "World Birth rate – Demographics". Retrieved 17 October 2011. 
  2. ^ See "Fertility rates"; Economic Geography Glossary at University of Washington
  3. ^ "birthrate – definition of birthrate by the Free Online Dictionary, Thesaurus and Encyclopedia". Retrieved 17 October 2011. 
  4. ^ a b "Birth rate, crude (per 1,000 people) | Data | Table". Retrieved 17 October 2011. 
  5. ^ "birthrate: Definition from". Retrieved 17 October 2011. 
  6. ^ "Birthrate – Definition and More from the Free Merriam-Webster Dictionary". Retrieved 17 October 2011. 
  7. ^ "UNdata: Crude birth rate (per 1,000 population)". United Nations. 25 August 2011. Retrieved 17 October 2011. 
  8. ^ Staff (2012). "FIELD LISTING :: BIRTH RATE". Central Intelligence Agency - The World Factbook. Central Intelligence Agency. Retrieved 4 June 2012. 
  9. ^ Staff (Dec 6, 2007). "FIELD LISTING - BIRTH RATE". Central Intelligence Agency - The World Factbook. Central Intelligence Agency. Retrieved 1 November 2012. 
  10. ^ "World Birth rate". Retrieved 2014-09-18. 
  11. ^ "Crude Birth Rates – The World and its Major Regions, 1950–2050". Retrieved 17 October 2011. 
  12. ^ "Federal report shows drop in adolescent birth rate, July 7, 2011 News Release – National Institutes of Health (NIH)". 7 July 2011. Retrieved 17 October 2011. 
  13. ^ Susan Daly. "Ireland has one of highest birth and lowest death rates in EU · TheJournal". Retrieved 17 October 2011. 
  14. ^ a b Press Association (13 July 2011). "Call for more midwives as birth rate reaches 40-year high | Society |". The Guardian (UK). Retrieved 17 October 2011. 
  15. ^ Michael Blastland (2 February 2012). "Go Figure: When was the real baby boom?". BBC news magazine. Retrieved 5 April 2012. 
  16. ^ "Germany faces up to its kinder surprise". The Irish Times. 9 August 2011. 
  17. ^ By the CNN Wire staff (1 April 2011). "CDC records rise in birth rate for women over 40". CNN. Retrieved 17 October 2011. 
  18. ^ Sui, Cindy (15 August 2011). "BBC News – Taiwanese birth rate plummets despite measures". BBC. Retrieved 17 October 2011. 
  19. ^ Roan, Shari (31 March 2011). "Us Birth Rate | U.S. birth rate: Drop in birth rate is the biggest in 30 years – Los Angeles Times". Retrieved 17 October 2011. 
  20. ^ Bill McBride (12 August 2011). "America's Birth Rate Declined For The Third Year Running". Retrieved 17 October 2011. 
  21. ^ Bill McBride (12 August 2011). "America's Birth Rate Declined For The Third Year Running". Retrieved 17 October 2011. 
  22. ^ "Economic turmoil taking its toll on childbearing". USA Today. 11 August 2011. Retrieved 17 October 2011. 
  23. ^ "Lower birth rate blamed on the economy". 12 August 2011. Retrieved 17 October 2011. 
  24. ^ Livingston, Gretchen. In a Down Economy, Fewer Births. Pew Social & Demographic Trends - Public Opinion Polling, Survey Research, & Demographic Data Analysis. Pew Center for Research, 12 Oct. 2011. Web. 04 Dec. 2011.
  25. ^ a b c d "CDC Data & Statistics | Feature: Teen Birth Rates Declined Again in 2009". 1 July 2011. Retrieved 17 October 2011. 
  26. ^ "CDC Data & Statistics | Feature: Teen Birth Rates Declined Again in 2009". 1 July 2011. Retrieved 17 October 2011. 
  27. ^ "Baby bust: U.S. births at record low". CNN. September 6, 2014. 
  28. ^ "Population gains at near-historic lows". The Washington Post. April 19, 2014. 
  29. ^ "U.S. Birth Rate Not High Enough To Keep Population Stable". The Huffington Post. April 19, 2014. 


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