Population Pyramids of the World from 1950 to 2100

Thailand Population Pyramid 1951

Thailand
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1951
Population: 20,965,182

Year

-5 -1   1951  +1 +5

Country

A B C D E F G H I J K L M N O P Q R S T U V W Y Z
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Summary

Thailand in 1951

As of 1951, Thailand counted 20,965,182 inhabitants. With a median age of 18.6 years, Thailand had a youth dependency ratio of 77.1 and an old-age dependency ratio of 5.8 per 100 people of working age.

The broad-based, expansive shape of the pyramid points to high fertility and strong population growth.

Ranks #22 of 201 by population Ranks #150 of 201 by median age

Share of the population by age group, 1950–2100

Data source: United Nations World Population Prospects, 2024 revision (medium variant) — last updated July 2024.

Key indicators for Thailand
Population
20,965,182
Median age
18.6
0-14 %
42.2%
65+ %
3.2%
Child dependency
77.1
Old-age dependency
5.8
Region
ASIA
Pyramid shape
Expansive
Population 2050
66,382,735
Population 2100
45,555,065
What is driving the change
Births per woman
Total fertility rate, 1960–2023
1234567
1960Replacement level (2.1)2023 · 1.21

The fertility rate of Thailand was 1.21 births per woman in 2023, under the 2.1 needed to replace each generation.

Source: World Bank World Development Indicators, latest available year.

Life expectancy at birth
Years, 1960–2023
Total Women Men
405060708090
19602023 · 76.4

Life expectancy at birth was 76.4 years in 2023: 80.9 for women and 72.2 for men.

Source: World Bank World Development Indicators, latest available year.

People supported per 100 workers
Dependency ratios, 1950–2100
Children Older adults
22456890
19502100
Migration to and from Thailand
Where immigrants come from (2024)

2,906,155 immigrants live in Thailand, 4.1% of the population.

Myanmar1,708,695
Cambodia375,635
Laos285,819
United Kingdom116,582
Japan104,515
Where emigrants live (2024)

1,178,284 people born in Thailand live in other countries.

United States of America307,741
Republic of Korea199,861
Australia109,845
Taiwan80,032
Malaysia70,718
Explore
Immigration statistics Origin of migrant stocks map

Source: United Nations International Migrant Stock 2024.

How Thailand compares with its neighbours
Country Population Median age Relative size
Thailand 20,965,183 18.6
Philippines 19,568,081 16.5
Myanmar 18,070,418 21.8
Viet Nam 25,600,269 24.0
Malaysia 6,257,417 19.5
Frequently asked questions about Thailand's population
How many people lived in Thailand in 1951?
In 1951, Thailand's population was 20,965,182.
What is the median age in Thailand?
The median age in Thailand is 18.6 years — half the population is younger, half older.
What share of Thailand's population is over 65 or under 15?
In Thailand, 42.2% of people are under 15 and 3.2% are 65 or older.
What shape is Thailand's population pyramid, and what does it mean?
Thailand's pyramid is expansive — broad at the bottom, the signature of high birth rates and a growing population.

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