The baby boomer generation is the group of people born in the years after World War II as the world stabilized and birth rates soared. The largest generation in U.S. history, baby boomers are currently shifting from being part of the workforce to being part of the retired population. Here’s a rundown of who baby boomers are, where they fit in the context of the generations, and what it means in investing and finance.

An infographic defining and explaining the term "baby boomer."
Image source: The Motley Fool

What is a baby boomer?

What is a baby boomer?

A baby boomer refers to someone born between 1946 and 1964, according to most sources, although the exact dates can vary a bit. The term refers to the increase in birth rates in the United States and elsewhere in the developed world after World War II; the U.S. population increased by almost 2.4 million between 1940 and 1950. Birth rates surged in the early 1940s and peaked in 1949, remaining historically elevated well into the 1960s.

The term has been used since at least 1963 to describe the surge in college enrollment as the “boomers” started to come of age. There were more baby boomers born in the United States (76 million) than any generation before or since.

As mentioned, the exact definition of the term baby boomers depends on where you are and what source you’re looking at.

Baby boomers and other generations

Baby boomers and other generations

Here’s a look at the living generations and the approximate birth years that are typically included in each one:

Generation (Alternative Terms) Birth Years
Greatest Generation (World War II Generation) 1901-1927
Silent Generation 1928-1945
Baby Boomers 1946-1964
Generation X 1965-1980
Millennials 1981-1996
Generation Z 1997-2012
Generation Alpha 2013-onward

As far as the comparative sizes of the generations, we obviously don’t know quite how large the youngest generations are just yet, since there isn’t a clear consensus yet on where Gen Z ends and Generation Alpha is still forming. However, using the year ranges in the table above, we know how baby boomers compare with other recent generations.

Data source: Pew Research Center.
Generation Number of Births in United States
Silent Generation 47 million
Baby Boomers 76 million
Generation X 55 million
Millennials 72 million

Why the boomers are important to investors

Why the baby boomer generation is important to investors and finance

Many economists have theorized that the gradual retirement of the baby boomer generation would lead to a slowing economy, and this certainly makes sense. After all, if you remove the largest component of the labor force, the economy as a whole will be less productive. That’s especially true because the generations that will replace the boomers have relatively lower birth rates and are shaping up to be significantly smaller.

So far, there hasn’t been a massive impact, but we’re still relatively early in the retirement of the baby boomers. The youngest boomers are still in their late 50s, and more people than ever are working beyond the traditional retirement age of 65. The fact that the large millennial generation (mostly baby boomers’ children) are also reaching their peak productivity years is helping to offset the effect.

However, beyond a general economic slowdown, there are some other economic implications. Social Security and Medicare are good examples; the retirement of the baby boomer generation is expected to lead to large deficits in both programs. There is much debate over the best way(s) to fix these programs, but the transition of the baby boomer generation from paying in to collecting benefits is expected to be costly.

For investors, the retirement of the baby boomer generation could create some interesting opportunities, especially in healthcare. The older segments of the population are expected to double (or more) in size over the next couple decades; older Americans use healthcare services more often and spend more when they do. Opportunities that could arise from the retirement of baby boomers include senior housing, pharmaceutical research, medical office real estate, and more.

The bottom line on baby boomers

The bottom line on baby boomers

Baby boomers are the largest generation in U.S. history and are in the process of reaching retirement age. Because of its size, and the relatively lower birth rates of the youngest generations, there are several big implications for the U.S. economy as well as for investors.

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