The end of World War II brought a baby boom to many countries, especially Western ones. There is some disagreement as to the precise beginning and ending dates of the post-war baby boom, but it is most often agreed to have begun in the years immediately after the war, though some place it earlier at the increase of births in 1941–1943. The boom started to decline as birth rates in the United States started to decline in 1958, though the boom would only grind to a halt 3 years later in 1961, 20 years after it began. In countries that had suffered heavy war damage, displacement of people, and post-war economic hardship (e.g., Germany and Poland), the boom began some years later.

In the United States

Most Baby boomers are now in their 60s or 70s, with the oldest member of the boom being around 77. The trailing boomers are in their mid to late late 50s, with the youngest being 54 as of 2018. In the economy, many are now retiring and leaving the labor force.

In 1946, live births in the U.S. surged from 222,721 in January to 339,499 in October. By the end of the 1940s, about 32 million babies had been born, compared with 24 million in the 1930s. In 1954, annual births first topped four million and did not drop below that figure until 1965, when four out of ten Americans were under the age of 20.[1]

In the years after the war, couples who could not afford families during the Great Depression made up for lost time[citation needed]; the mood was now optimistic. During the war, unemployment ended and the economy greatly expanded; afterwards the country experienced vigorous economic growth until the 1970s.

Definition of the boom years

It is important to distinguish between the demographic boom in births, and the actual generations born during that period.

United States birth rate (births per 1000 population).[2] The United States Census Bureau defines baby boomers as those born between mid-1946 and mid-1964 (shown in red).[3]

As shown in the birth rate chart to the right, the baby boom in the United States is as much defined by the low birth rates that preceded and followed it as it is by an exceptionally high post-war fertility rate. The birth rate from 1946 to 1964 is much lower than the birth rate prior to World War I, although it is high in comparison to the time periods immediately preceding and following 1946–1964.

The exact beginning and end of the baby boom can be debated. The U.S. Census Bureau defines baby boomers as those born between mid-1946 and mid-1964,[3] although the U.S. birth rate began to shoot up in 1941 and to decline after 1957. Deborah Carr considers baby boomers to be those born between 1944 and 1959,[4] while Strauss and Howe place the beginning of the baby boom in 1943.[citation needed] The following table shows changes in U.S. population during the period of U.S. involvement in World War II and for the five years thereafter, based on U.S. census information.[5]

Year US resident population
Net change
1941 133,121 1,161 0.88%
1942 133,920 799 0.60%
1943 134,245 325 0.24%
1944 132,885 −1,360 −1.01%
1945 132,481 −404 −0.30%
1946 140,054 7,573 5.72%
1947 143,446 3,392 2.42%
1948 146,093 2,647 1.85%
1949 148,665 2,572 1.76%
1950 151,868 3,203 2.15%
10-year average - 1,991 1.43%

Historical and social background

When the war ended in 1945, millions of veterans returned home and reintegrated into civilian life. To help this process, Congress passed the G.I. Bill of Rights. This encouraged home ownership and investment in higher education through the distribution to veterans of loans at low or zero interest rates.

Returning veterans married, started families, pursued higher education, and bought their first homes. With veterans' benefits, the twenty-somethings found new homes in planned communities on the outskirts of American cities. This group, whose formative years covered the Great Depression, was a generation hardened by poverty and deprived of the security of a home or job. Now thriving on the American Dream, life was simple, jobs were plentiful, and a record number of babies were born.

Many Americans believed that lack of post-war government spending would send the United States back into depression. However, consumer demand fueled economic growth. The baby boom triggered a housing boom, a consumption boom and a boom in the labor force. Between 1950 and 1960, the nation's real GDP rose almost 50%, from $2.2 trillion to $3.1 trillion (in 2009 dollars). The middle class grew and the majority of America's labor force held white-collar jobs. This increase led to urbanization and increased the demand for ownership of cars and other 1950s and 1960s inventions.

Marriage rates

Marriage rates rose sharply in the 1940s and reached all-time highs. After World War II, Americans began to marry at a younger age: the average age of a person at their first marriage dropped to 22.5 years for males and 20.1 for females, down from 24.3 for males and 21.5 for females in 1940.[6] Getting married immediately after high school was becoming commonplace and women were increasingly under tremendous pressure to marry by the age of 20. The stereotype developed that women were going to college to earn their M.R.S. (Mrs.) degree.[7]

Family sizes

Family size increased sharply throughout the baby boom: the average woman bore 3.09 children in 1950 which increased to 3.65 children per family in 1960; the peak was in 1957, when the figure stood at 3.77. Most women became pregnant with their first child within seven months of their wedding; between 1940 and 1960, the number of families with three children doubled and the number of families having a fourth child quadrupled.

In the United States more babies were born during the seven years after 1948 than in the previous 30, causing a shortage of teenage babysitters. Madison, New Jersey, for example, only had 50 high-school girls to babysit for a town of 8,000, and any sitter could have had two sitting jobs at once if desired. $5 of the $7 that a California couple spent to go to the movies in 1950 went to the babysitter.[8]

Easterlin models

Economist and demographer Richard Easterlin in his "Twentieth Century American Population Growth" (2000), explains the growth pattern of American population in the 20th century by examining the fertility rate fluctuations and the decreasing mortality rate. Easterlin attempts to prove the cause of the baby boom and baby bust by the "relative income" theory, despite the various other theories that these events have been attributed to. The "relative income" theory suggests that couples choose to have children based on a couple's ratio of potential earning power and the desire to obtain material objects. This ratio depends on the economic stability of the country and how people are raised to value material objects. The "relative income" theory explains the baby boom by suggesting that the late 1940s and the 1950s brought low desires to have material objects, because of the Great Depression and World War II, as well as plentiful job opportunities (being a post-war period). These two factors gave rise to a high relative income, which encouraged high fertility. Following this period, the next generation had a greater desire for material objects, however an economic slowdown in the United States made jobs harder to acquire. This resulted in lower fertility rates causing the Baby Bust.[9]

In Canada

In Canada, the baby boom is usually defined as occurring from 1947 to 1966, with over 400,000 babies born yearly. Canadian soldiers were repatriated later than American servicemen, and Canada's birthrate did not start to rise until 1947. Most Canadian demographers prefer to use the later date of 1966 as the boom's end year in that country. The later end than the US (baby-boom generation: babies born from 1946 to 1964; see preceding paragraphs) is ascribed to a later adoption of birth control pills.[10][11]

In Australia

The author and columnist Bernard Salt places the Australian baby boom between 1946 and 1961.[12][13]

In the United Kingdom

After a short baby boom immediately after the war peaking in 1946, the United Kingdom experienced a second baby boom during the 1960s, with a peak in births in 1964, and a third, smaller boom peaking in 1990. The three peaks can clearly be seen in the UK Population Pyramid.[14][15]

European and South-Pacific trends

Many European countries, Australia and New Zealand also experienced a baby boom. In some cases the total fertility rate almost doubled. The American birth model, conceived by demographer Frank Notestein, was punctuated by an end to the upsurge in births and a return to pre-war levels. In many European countries the first year of the Post World War II baby boom was the year 1946, but in Germany the first year was the year 1955 in Finland the largest birth rate was in August and September 1945. Japan had two separate baby booms. The first started in 1947, the second in 1971. Prior to World War II, mortality rates in Europe and America were on a general decline due to improved nutrition and medicine, and a surge in births were previously not experienced at such a large scale. Based on this model, baby boom years for other countries regarded for having a baby boom are as follows:[by whom?][citation needed]

Hungary's population pyramid in 1960 with boom generations
  • France 1946–1974
  • United Kingdom 1946–1974
  • Finland 1945–1950
  • Germany 1955–1967
  • Sweden 1946–1952
  • Denmark 1946–1950
  • Netherlands 1946–1972
  • Ireland 1946–1982
  • Hungary 1946–1957
  • Iceland 1946–1969
  • New Zealand 1946–1961
  • Australia 1946–1961
  • Japan 1947–1949, 1971–1974

In some of these examples, an "echo boom" followed some time after as the offspring of the initial boom gave rise to a second increase, with a baby "bust" in between. The birth years of the baby boom as noted being both short and long lived, creates what many believe to be a myth to the notion of defining baby boomers as one "generation", as a unified concept is clearly not possible. Indeed, multiple generations may be present in a single country such as Ireland where the boom lasted 36 years. This overlapping effect of generations is not illuminated when considering crude fertility rates. The only common ground for the collective boom is the same approximate starting year. This example can be applied to each state in the United States on an individual basis. The states with a census in place in 1946 saw fertility rates drop to pre-war levels throughout the 1960s, with the average being in 1964.

See also


  • Barkan, Elliott Robert. From All Points: America's Immigrant West, 1870s-1952, (2007) 598 pages
  • Barrett, Richard E., Donald J. Bogue, and Douglas L. Anderton. The Population of the United States 3rd Edition (1997) compendium of data
  • Carter, Susan B., Scott Sigmund Gartner, Michael R. Haines, and Alan L. Olmstead, eds. The Historical Statistics of the United States (Cambridge UP: 6 vol; 2006) vol 1 on population; available online; massive data compendium; online version in Excel
  • Chadwick Bruce A. and Tim B. Heaton, eds. Statistical Handbook on the American Family. (1992)
  • Easterlin, Richard A. The American Baby Boom in Historical Perspective, (1962), the single most influential study complete text online[permanent dead link]
  • Easterlin, Richard A. Birth and Fortune: The Impact of Numbers on Personal Welfare (1987), by leading economist excerpt and text search
  • Gillon, Steve. Boomer Nation: The Largest and Richest Generation Ever, and How It Changed America (2004), by leading historian. excerpt and text search
  • Hawes Joseph M. and Elizabeth I. Nybakken, eds. American Families: a Research Guide and Historical Handbook. (Greenwood Press, 1991)
  • Klein, Herbert S. A Population History of the United States. Cambridge University Press, 2004. 316 pp
  • Macunovich, Diane J. Birth Quake: The Baby Boom and Its Aftershocks (2002) excerpt and text search
  • Mintz Steven and Susan Kellogg. Domestic Revolutions: a Social History of American Family Life. (1988)
  • Wells, Robert V. Uncle Sam's Family (1985), general demographic history
  • Weiss, Jessica. To Have and to Hold: Marriage, the Baby Boom, and Social Change (2000) excerpt and text search


  1. ^ Figures in Landon Y. Jones, "Swinging 60s?" in Smithsonian Magazine, January 2006, pp 102–107.
  2. ^ Pre-2003 data came from: "Table 1-1. Live Births, Birth Rates, and Fertility Rates, by Race: United States, 1909-2003". Centers for Disease Control and Prevention (CDC). (Retrieved from: "Vital Statistics of the United States, 2003, Volume I, Natality". CDC.) Post-2003 data came from: "National Vital Statistics Reports" (8 December 2010). CDC. Volume 59, no. 1. The graph is an expanded SVG version of File:U.S.BirthRate.1909.2003.png
  3. ^ a b "Fueled by Aging Baby Boomers, Nation's Older Population to Nearly Double in the Next 20 Years, Census Bureau Reports". United States Census Bureau. 6 May 2014.
  4. ^ Carr, Deborah (2002). "The Psychological Consequences of Work-Family Trade-Offs for Three Cohorts of Men and Women" (PDF). Social Psychology Quarterly. 65 (2). 
  5. ^ "Population and Household Economic Topics". Census.gov. Retrieved August 21, 2010. 
  6. ^ "Median Age at First Marriage, 1890–2006". Infoplease. Retrieved July 22, 2008. 
  7. ^ "People & Events: Mrs. America: Women's Roles in the 1950s". PBS. Retrieved July 22, 2008. 
  8. ^ Forman-Brunell, Miriam (2009). Babysitter: An American History. New York University Press. pp. 49–50. ISBN 978-0-8147-2759-1. 
  9. ^ See Richard A. Easterlin, Birth and Fortune: The Impact of Numbers on Personal Welfare (1987)
  10. ^ The dates 1946 to 1962 are given in Doug Owram, Born at the right time: a history of the baby-boom generation (1997)
  11. ^ David Foot, Boom, Bust and Echo: Profiting from the Demographic Shift in the 21st Century (1997) see Pearce, Tralee (24 June 2006). "By definition: Boom, bust, X and why". The Globe and Mail. Archived from the original on 7 August 2006. 
  12. ^ Salt, Bernard (2004). The Big Shift. South Yarra, Vic.: Hardie Grant Books. ISBN 978-1-74066-188-1. 
  13. ^ Head, Neil; Arnold, Peter (November 2003). "Book Review: The Big Shift" (PDF). The Australian Journal of Emergency Management. 18 (4). Archived from the original on 2009-03-05. 
  14. ^ Office for National Statistics UK population interactive content
  15. ^ Office for National Statistics Animated Population Pyramid for the UK