POWER OF THE PYRAMIDS
introduction
Many of the vast differences we see in societies across the
globe can be related to the composition of their respective
populations. This is true on the local, state, and national level.
So when exploring variations among countries, a good place to
start is with their population pyramids – graphs that display the
age and sex distribution of the country’s population.
To help make population projections for different countries,
demographers look at the profile of the countries’ residents.
What are the ages of the people? How many are men? How
many are women? Taking this information, they construct
population pyramids that depict the configuration of a country’s
population as impacted by 70 to 80 years of economic, political,
and natural events.
Vocabulary: cohort, demographers, population pyramids, zero
population growth
materials
Part 1
• None
Part 2
• Student Worksheet (provided)
• Power of the Pyramids Graph Paper (provided)
• Colored pencils
• Calculators (optional)
Part 1: What is a Population
Pyramid?
procedure
1. Display the world population pyramid and explain that
this is a type of graph used by demographers to study the
distribution of people across sex and age categories.
2. Explain to the students that the graph represents the entire
world population, sorted by age and sex – with the youngest
at the bottom and the oldest at the top and males on the left,
females on the right. Each age level/sex grouping is called a
cohort. A cohort represents the percentage of people within
© 2018 POPULATION CONNECTION
Studies For Our Global Future
concept
The age and sex distribution of a population
affects its growth rate and provides
information on its past, present, and future
growth patterns.
objectives
Students will be able to:
• Describe the three general shapes of
population pyramids and their meanings.
• Construct a population pyramid for one of
six different countries.
• Make correlations between the shape of a
country’s pyramid and its growth pattern.
• Analyze countries’ population pyramids to
make inferences about past events, current
trends, and future growth.
subjects
AP Human Geography, Geography,
Environmental Science (General and AP),
Mathematics
skills
Calculating percentages, graphing and
analyzing data, interpreting bar graphs,
comparing and evaluating, writing
method
Students use real-world data to construct and
interpret population pyramids and discuss
differences in population growth rates among
several different countries.
that sex and age range within the population. So
on the world population pyramid, we can see that
4.5 percent of the global population is made up of
males aged 0-4.
Age
3. Ask the students the following comprehension
questions and allow them time to ask their own
questions.
World (2017)
Male
a. What is the largest age cohort and how can
you tell?
Answer: 0-4 year old males; that bar extends
furthest from the center axis.
b. What cohort makes up 4% of the global
population?
Answer: 25-29 year old females.
c. Where are you represented on the pyramid?
What percentage does your cohort represent?
Answers will vary.
Female
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
10
8
6
4
2
0
2
4
Percentage of Population
6
8
10
Source: United States Census Bureau, International Database
d. Are there currently more old people or young people living on the planet? How can you tell?
Answer: More young people. The cohorts for young ages extend out further than the cohort bars for elderly people.
e. In general, the bars get smaller as we move up the graph until the top cohorts – they break the pattern and
extend further out. Why? Hint: Look at the y-axis and the ages represented in each cohort.
Answer: All of the previous cohorts span a five year age increment. The cohorts at the top of the graph – 75+ males
and 75+ females – represent everyone aged 75 years or older. Those cohorts cover a much larger span of ages than
the other cohorts.
World (2017)
4. Discuss the shape of the world population
pyramid and ask students if they think the graph
represents a population that is growing or
shrinking and their reasoning.
Explain that the percentage of a population that
falls within each reproductive category provides
clues to the population’s future growth. As such,
the shape of a population pyramid reveals a lot
about how a population is growing.
Age
5. Now display the world population pyramid
showing the age intervals grouped into
reproductive categories.
Male
Female
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
Post-Reproductive
Reproductive
Pre-Reproductive
10
8
6
4
2
0
2
4
Percentage of Population
6
8
10
Source: United States Census Bureau, International Database
© 2018 POPULATION CONNECTION
population dynamics unit
| POWER OF THE PYRAMIDS 2
6. Display the three sample population pyramids below.
• Graph 1: Expanding – Ethiopia. The triangular shape reflects a growing population. A significant percentage
of people are in the pre-reproductive age groups. As those children age and enter their reproductive years
and start having children of their own, the population will almost surely grow.
• Graph 2: Stable – New Zealand. The rectangular shape shows a stable population. There is a fairly even
distribution of people across each age group. Generations are replacing each other so the population will
not grow or shrink.
• Graph 3: Diminishing – Japan. The cup shape shows a shrinking population. The largest percentage of
people are in their post-reproductive years and no longer having children. As fewer and fewer people reach
reproductive age, the size of the population will decrease.
Graph 1
Graph 2
Ethiopia (2017)
Female
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
Male
Post-Reproductive
Age
Age
Male
Reproductive
Pre-Reproductive
10
8
6
4
2
0
2
4
Percentage of Population
6
8
10
New Zealand (2017)
Female
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
Post-Reproductive
Reproductive
Pre-Reproductive
10
8
6
4
2
0
2
4
Percentage of Population
6
8
10
Graph 3
Japan (2017)
Age
Male
Female
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
Post-Reproductive
Reproductive
Pre-Reproductive
10
8
6
4
2
0
2
4
Percentage of Population
6
8
10
Source: United States Census Bureau, International Database
© 2018 POPULATION CONNECTION
population dynamics unit
| POWER OF THE PYRAMIDS 3
Part 2: Exploring Pyramids from Across the Globe
procedure
1. Distribute the Student Worksheet and the Pyramid Graph Paper to each student and assign them one of the
six countries. If you’d prefer, students can work in pairs.
2. The figures on the Worksheet are the population of each age group within each sex for each particular country.
In order to construct the country’s pyramid, students must first calculate the percentage of the population of
each sex in each age group.
Example: According to the Worksheet, the total population of the United States in 2017 was 326,625,791. The
population of U.S. males aged 0-4 was 10,310,369.
10,310,369
326,625,791
= .032 or 3.2%
Students should complete these calculations for each cohort.
3. Model how to construct a population pyramid. You may want to project a blank sheet of Pyramid Graph Paper
with a data sheet on the board using a document camera or Smartboard.
4. Students construct a population pyramid for their assigned country by graphing the percentage data onto the
Pyramid Graph Paper.
5. Choose one completed pyramid from each country to display for the class.
Answers to Student Worksheet
See Answer Key for the Population Pyramids and Student Worksheet
discussion questions
1. Can you tell from the data if there are more male or female babies in each country?
Yes, there are more male babies. There is a slightly greater probability of giving birth to male children. For every 100
girls born, there are about 105 boys born. For most countries, this 5 percent difference is reflected in the numbers on
the data sheet. There are two countries in this set (India and China) where the sex difference is more pronounced. In
India, there are nearly 13 percent more boys than girls ages 0-4 and in China there are 15.6 percent more boys than
girls in that age group. This is due to sex selection based on a preference for sons.
2. Can you tell from the graphs which country has the most people?
No. The graphs represent 100 percent of the population of each country broken down by age groups.
© 2018 POPULATION CONNECTION
population dynamics unit
| POWER OF THE PYRAMIDS 4
Demographers typically use the percentage data instead of the raw data so that each pyramid fits on the same size grid
and can be compared to other population pyramids.
3. Are there more elderly women or men? Why might that be the case?
There are more elderly women. Throughout the world, life expectancy for women is higher than for men. This is due to
a number of genetic and social factors. In general, men are more predisposed to certain health risks than women. Also,
men make up the majority of the military and are more likely to die during wars.
4. If you had a business and wanted to capitalize on your information about the population age distribution for
the United States, what would you sell and why? What about a business in Nigeria? A business in Germany?
United States – Answers should include any products for people between 20-29 or 50-59 because they make up the
largest percentages of people. Nigeria – Answers should include any products for children and infants. Germany –
Answers should include any products for older people.
5. Which of the six countries is growing the fastest? How do you know? Can you think of any other information
we can infer from the pyramid shape?
Nigeria is growing the fastest. It has the widest base, and the largest percentage of the population in pre-reproductive
and reproductive years. Population growth occurs when the segment of the population currently in its childbearing
years (ages 15-44; bars 4-9 on the graphs) has produced a generation larger than itself (bars 1-3). The triangular
pyramid shape also indicates that a relatively small proportion of the population is elderly – the bars at the top of the
graph are very small – and could mean that life expectancy is low.
6. Looking at the pyramids, which countries appear to have the slowest rates of population growth? How can you
tell?
Germany has the slowest population growth with over half of the country’s population in their post-reproductive years.
The pyramid is inverted with a wide top and thin base showing that 53 percent of the population is over the age of 45
(bars 10-16 on the graphs). The United States is also growing slowly. The graph is closer to a rectangle than a pyramid,
showing more uniform population size across the age groups and therefore a more stable population.
7. Which country would you suspect is closest to zero population growth?
Zero population growth (ZPG) occurs when a country’s birth rate and death rate are roughly equal. If there is significant
migration in or out of the country, that must be taken into account as well. Though the graphs do not display birth and
death rates, we can reason by their shapes, that Germany and the U.S. are closest to reaching ZPG.
8. What factors would change the shape of the pyramids in the future?
A decrease in the birth rate. The people in their childbearing years would be having fewer children, and therefore,
be producing a generation more similar in size to itself. This would change the shape of the graph over time from a
pyramid to more of a rectangle, indicating a more stable population. Additionally, as life expectancy increases and the
proportion of older people increases, the top bars will expand.
9. There are two noticeable “bumps” on the U.S. population pyramid. What do these larger cohorts correspond to?
© 2018 POPULATION CONNECTION
population dynamics unit
| POWER OF THE PYRAMIDS 5
The “bump” closer to the top of the pyramid reflects the baby boom generation – children born following World War
II. (The baby boom generation includes those born between 1946 and 1964. ) The “bump” lower down the pyramid is
an echo boom – the children of baby boomers.
10. China’s population pyramid is the most varied of the six. Can you think of any historic events from the past 75
years that helped shape the Chinese pyramid?
In the early 1950s, Chinese women were having an average of six children. Then the Great Leap Forward (19581962), a national campaign that moved many agricultural workers into industries, created widespread famine and
an estimated 20-40 million people died of starvation. The years 1958-1962 are represented by the cohorts for ages
55-59 on the pyramid, which are smaller than the surrounding cohorts.
The Chinese population continued to grow in the 1960s and 1970s and in 1980, the one-child policy was put in
place. The birth rate dropped as many people were allowed only one child, and this is reflected in the cohorts for ages
35-39. The one-child policy remained until 2016. The larger percentages for the 20-24 year old cohorts are an “echo
boom,” the children of those in the 45-49 year old bars.
11. Which of the three general pyramid shapes would you use to describe India’s population pyramid? What does
this mean for India’s future growth?
The top portion of India’s pyramid is triangular while the bottom portion is rectangular. This shows that in years past,
India was growing significantly with each younger cohort larger than its predecessor. In more recent years, India’s
growth has slowed and we see that the bottom four cohorts are more evenly balanced.
It is important to note that India’s population is still increasing and will do so until the birth rate (currently 21) and
death rate (currently 7) are equal.
12. Compare and contrast the population pyramids of Nigeria and Guatemala. How are they similar/different
and what does this mean for each countries’ future growth?
The pyramids for both Nigeria and Guatemala are generally a triangle shape – the base of each is much wider than its
top, and every younger cohort is larger than its predecessor. So we know that both countries are growing.
However, we can see in the pyramid for Guatemala that younger cohorts are showing less variation. For instance,
compare the male 0-4 cohort with the male 15-19 cohort within each pyramid. There is a small difference between
these two cohorts on the Guatemala pyramid of only 0.4 percent (6.0 vs. 5.6), while on the Nigerian pyramid the
difference is 2.7 percent (8.2 vs. 5.5). Less variation between the younger cohorts shows the pyramid of Guatemala is
starting to become more rectangular and, as such, the population will most likely grow at a slower rate.
assessment
Provide students with a population pyramid from the Census Bureau’s International Data Base (https://www.
census.gov/data-tools/demo/idb/informationGateway.php). To create a pyramid, select “Population Pyramid
Graph” on the “Select Report” drop down. Students write a paragraph or two analyzing the pyramid. They should
describe the pyramid’s shape, explain what that shape means, and hypothesis what sort of growth patterns the
country might expect in the future.
© 2018 POPULATION CONNECTION
population dynamics unit
| POWER OF THE PYRAMIDS 6
POWER OF THE PYRAMIDS | student worksheet
Name: Date:
UNITED STATES (2017)
AGE
GROUP
MALES
0-4
10,310,369
5-9
AGE
GROUP
MALES
9,846,881
0-4
44,229,022
10,354,176
9,928,470
5-9
10-14
10,591,450
10,144,587
15-19
10,792,991
20-24
38,479,566
0-4
15,684,206
14,946,071
42,468,938
36,068,446
5-9
13,619,218
12,999,583
10-14
40,786,217
34,565,229
10-14
12,202,864
11,650,066
10,316,013
15-19
43,083,602
36,727,961
15-19
10,411,742
9,955,173
11,420,961
10,821,813
20-24
51,132,005
45,322,662
20-24
8,683,157
8,334,340
25-29
11,983,525
11,488,328
25-29
62,304,012
59,377,502
25-29
7,459,483
7,160,331
30-34
11,140,791
10,877,462
30-34
54,233,386
51,682,781
30-34
6,408,312
6,107,351
35-39
10,659,483
10,600,860
35-39
49,270,274
46,984,156
35-39
5,491,412
5,189,495
40-44
9,785,639
9,883,910
40-44
53,057,621
51,444,851
40-44
4,454,237
4,140,360
45-49
10,414,553
10,587,745
45-49
63,039,592
60,358,806
45-49
3,505,511
3,259,239
50-54
10,544,682
10,896,194
50-54
59,561,553
57,813,364
50-54
2,747,241
2,681,070
55-59
10,742,928
11,344,704
55-59
34,930,283
33,828,480
55-59
2,108,837
2,165,155
60-64
9,614,952
10,477,272
60-64
39,840,767
39,612,697
60-64
1,591,110
1,704,925
65-69
7,983,877
8,942,939
65-69
29,074,727
29,430,386
65-69
1,199,927
1,315,666
70-74
5,976,359
6,921,992
70-74
18,340,072
19,205,733
70-74
842,851
923,742
75+
8,717,999
12,511,886
75+
23,688,230
29,359,850
75+
782,356
907,230
326,625,791
© 2018 POPULATION CONNECTION
Total
MALES
%
NIGERIA (2017)
MALES
FEMALES
FEMALES
%
AGE
GROUP
Total
MALES
%
CHINA (2017)
FEMALES
1,379,302,771
FEMALES
%
MALES
%
Total
population dynamics unit
FEMALES
FEMALES
%
190,632,261
| POWER OF THE PYRAMIDS 7
POWER OF THE PYRAMIDS | student worksheet page 2
Name: Date:
GUATEMALA (2017)
AGE
GROUP
MALES
0-4
926,777
5-9
AGE
GROUP
MALES
887,078
0-4
1,759,155
909,767
874,324
5-9
10-14
882,483
853,318
15-19
860,169
20-24
1,668,224
0-4
61,917,556
54,981,938
1,753,582
1,663,249
5-9
61,998,098
54,683,905
10-14
1,791,604
1,697,303
10-14
62,172,011
54,732,361
841,331
15-19
2,000,873
1,908,819
15-19
62,051,890
54,635,318
817,465
817,610
20-24
2,144,613
2,077,483
20-24
59,827,896
52,948,119
25-29
699,158
719,662
25-29
2,522,689
2,457,963
25-29
55,312,148
49,979,399
30-34
555,697
590,765
30-34
2,484,654
2,437,668
30-34
51,825,020
47,784,588
35-39
428,915
481,659
35-39
2,442,247
2,424,908
35-39
48,131,760
45,014,795
40-44
343,834
400,500
40-44
2,335,539
2,309,166
40-44
44,241,036
42,034,977
45-49
258,933
304,218
45-49
3,108,115
3,037,162
45-49
39,354,854
37,986,002
50-54
229,919
262,589
50-54
3,574,731
3,467,097
50-54
32,879,891
32,034,808
55-59
207,885
232,505
55-59
3,185,065
3,169,989
55-59
26,797,259
26,461,589
60-64
177,082
195,693
60-64
2,649,114
2,743,333
60-64
21,048,863
21,170,943
65-69
136,175
147,483
65-69
2,270,878
2,442,225
65-69
15,690,047
16,261,149
70-74
94,433
105,134
70-74
1,736,102
1,972,407
70-74
10,906,951
11,875,730
75+
93,884
124,287
75+
3,815,241
5,542,819
75+
11,240,803
13,954,207
15,460,732
© 2018 POPULATION CONNECTION
Total
MALES
%
INDIA (2017)
MALES
FEMALES
FEMALES
%
AGE
GROUP
Total
MALES
%
GERMANY (2017)
FEMALES
80,594,017
FEMALES
%
MALES
%
Total
population dynamics unit
FEMALES
FEMALES
%
1,281,935,911
| POWER OF THE PYRAMIDS 8
POWER OF THE PYRAMIDS | graph paper
Name: Date: Country Male
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
Female
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0-4
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
9
8
7
6
5
4
3
2
1
0
1
2
3
4
5
6
7
8
9
Percentage of Population
© 2018 POPULATION CONNECTION
population dynamics unit
| POWER OF THE PYRAMIDS 9
POPULATION PYRAMIDS | answer key
China (2017)
Male
8
6
4
2
0
2
4
6
8
10
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
10
8
6
Percentage of Population
4
8
6
4
2
0
2
4
Percentage of Population
© 2018 POPULATION CONNECTION
2
0
2
4
6
8
10
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
10
8
6
4
6
8
10
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
10
8
6
4
2
0
2
2
0
2
4
6
8
10
8
10
India (2017)
Female
Male
Age
Male
Female
Percentage of Population
Germany (2017)
Female
Age
Age
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
10
Male
Percentage of Population
Guatemala (2017)
Male
Nigeria (2017)
Female
Age
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
10
United States (2017)
Female
Age
Age
Male
4
Percentage of Population
6
8
10
75+
70-74
65-69
60-64
55-59
50-54
45-49
40-44
35-39
30-34
25-29
20-24
15-19
10-14
5-9
0-4
10
8
6
4
Female
2
0
2
4
6
Percentage of Population
population dynamics unit
| POWER OF THE PYRAMIDS 10
POWER OF THE PYRAMIDS | answer key
UNITED STATES (2017)
CHINA (2017)
NIGERIA (2017)
AGE
GROUP
MALES
MALES
%
FEMALES
FEMALES
%
AGE
GROUP
MALES
MALES
%
FEMALES
FEMALES
%
AGE
GROUP
MALES
MALES
%
FEMALES
FEMALES
%
0-4
10,310,369
3.2%
9,846,881
3.0%
0-4
44,229,022
3.2%
38,479,566
2.8%
0-4
15,684,206
8.2%
14,946,071
7.8%
5-9
10,354,176
3.2%
9,928,470
3.0%
5-9
42,468,938
3.1%
36,068,446
2.6%
5-9
13,619,218
7.1%
12,999,583
6.8%
10-14
10,591,450
3.2%
10,144,587
3.1%
10-14
40,786,217
3.0%
34,565,229
2.5%
10-14
12,202,864
6.4%
11,650,066
6.1%
15-19
10,792,991
3.3%
10,316,013
3.2%
15-19
43,083,602
3.1%
36,727,961
2.7%
15-19
10,411,742
5.5%
9,955,173
5.2%
20-24
11,420,961
3.5%
10,821,813
3.3%
20-24
51,132,005
3.7%
45,322,662
3.3%
20-24
8,683,157
4.6%
8,334,340
4.4%
25-29
11,983,525
3.7%
11,488,328
3.5%
25-29
62,304,012
4.5%
59,377,502
4.3%
25-29
7,459,483
3.9%
7,160,331
3.8%
30-34
11,140,791
3.4%
10,877,462
3.3%
30-34
54,233,386
3.9%
51,682,781
3.7%
30-34
6,408,312
3.4%
6,107,351
3.2%
35-39
10,659,483
3.3%
10,600,860
3.2%
35-39
49,270,274
3.6%
46,984,156
3.4%
35-39
5,491,412
2.9%
5,189,495
2.7%
40-44
9,785,639
3.0%
9,883,910
3.0%
40-44
53,057,621
3.8%
51,444,851
3.7%
40-44
4,454,237
2.3%
4,140,360
2.2%
45-49
10,414,553
3.2%
10,587,745
3.2%
45-49
63,039,592
4.6%
60,358,806
4.4%
45-49
3,505,511
1.8%
3,259,239
1.7%
50-54
10,544,682
3.2%
10,896,194
3.3%
50-54
59,561,553
4.3%
57,813,364
4.2%
50-54
2,747,241
1.4%
2,681,070
1.4%
55-59
10,742,928
3.3%
11,344,704
3.5%
55-59
34,930,283
2.5%
33,828,480
2.5%
55-59
2,108,837
1.1%
2,165,155
1.1%
60-64
9,614,952
2.9%
10,477,272
3.2%
60-64
39,840,767
2.9%
39,612,697
2.9%
60-64
1,591,110
0.8%
1,704,925
0.9%
65-69
7,983,877
2.4%
8,942,939
2.7%
65-69
29,074,727
2.1%
29,430,386
2.1%
65-69
1,199,927
0.6%
1,315,666
0.7%
70-74
5,976,359
1.8%
6,921,992
2.1%
70-74
18,340,072
1.3%
19,205,733
1.4%
70-74
842,851
0.4%
923,742
0.5%
75+
8,717,999
2.7%
12,511,886
3.8%
75+
23,688,230
1.7%
29,359,850
2.1%
75+
782,356
0.4%
907,230
0.5%
Total
326,625,791
© 2018 POPULATION CONNECTION
Total
1,379,302,771
Total
population dynamics unit
190,632,261
| POWER OF THE PYRAMIDS 11
POWER OF THE PYRAMIDS | answer key page 2
GUATEMALA (2017)
GERMANY (2017)
INDIA (2017)
AGE
GROUP
MALES
MALES
%
FEMALES
FEMALES
%
AGE
GROUP
MALES
MALES
%
FEMALES
FEMALES
%
AGE
GROUP
MALES
MALES
%
FEMALES
FEMALES
%
0-4
926,777
6.0%
887,078
5.7%
0-4
1,759,155
2.2%
1,668,224
2.1%
0-4
61,917,556
4.8%
54,981,938
4.3%
5-9
909,767
5.9%
874,324
5.7%
5-9
1,753,582
2.2%
1,663,249
2.1%
5-9
61,998,098
4.8%
54,683,905
4.3%
10-14
882,483
5.7%
853,318
5.5%
10-14
1,791,604
2.2%
1,697,303
2.1%
10-14
62,172,011
4.8%
54,732,361
4.3%
15-19
860,169
5.6%
841,331
5.4%
15-19
2,000,873
2.5%
1,908,819
2.4%
15-19
62,051,890
4.8%
54,635,318
4.3%
20-24
817,465
5.3%
817,610
5.3%
20-24
2,144,613
2.7%
2,077,483
2.6%
20-24
59,827,896
4.7%
52,948,119
4.1%
25-29
699,158
4.5%
719,662
4.7%
25-29
2,522,689
3.1%
2,457,963
3.0%
25-29
55,312,148
4.3%
49,979,399
3.9%
30-34
555,697
3.6%
590,765
3.8%
30-34
2,484,654
3.1%
2,437,668
3.0%
30-34
51,825,020
4.0%
47,784,588
3.7%
35-39
428,915
2.8%
481,659
3.1%
35-39
2,442,247
3.0%
2,424,908
3.0%
35-39
48,131,760
3.8%
45,014,795
3.5%
40-44
343,834
2.2%
400,500
2.6%
40-44
2,335,539
2.9%
2,309,166
2.9%
40-44
44,241,036
3.5%
42,034,977
3.3%
45-49
258,933
1.7%
304,218
2.0%
45-49
3,108,115
3.9%
3,037,162
3.8%
45-49
39,354,854
3.1%
37,986,002
3.0%
50-54
229,919
1.5%
262,589
1.7%
50-54
3,574,731
4.4%
3,467,097
4.3%
50-54
32,879,891
2.6%
32,034,808
2.5%
55-59
207,885
1.3%
232,505
1.5%
55-59
3,185,065
4.0%
3,169,989
3.9%
55-59
26,797,259
2.1%
26,461,589
2.1%
60-64
177,082
1.1%
195,693
1.3%
60-64
2,649,114
3.3%
2,743,333
3.4%
60-64
21,048,863
1.6%
21,170,943
1.7%
65-69
136,175
0.9%
147,483
1.0%
65-69
2,270,878
2.8%
2,442,225
3.0%
65-69
15,690,047
1.2%
16,261,149
1.3%
70-74
94,433
0.6%
105,134
0.7%
70-74
1,736,102
2.2%
1,972,407
2.4%
70-74
10,906,951
0.9%
11,875,730
0.9%
75+
93,884
0.6%
124,287
0.8%
75+
3,815,241
4.7%
5,542,819
6.9%
75+
11,240,803
0.9%
13,954,207
1.1%
Total
15,460,732
© 2018 POPULATION CONNECTION
Total
80,594,017
Total
population dynamics unit
1,281,935,911
| POWER OF THE PYRAMIDS 12