PopulationPyramids
UN World Population Prospects Data Visualized

Japan vs Singapore: Population Comparison 2026

Japan has 116,521,983 more people than Singapore (20.7× as many): 122.4 million vs 5.9 million in 2026. Median age is 50.2 in Japan and 36.8 in Singapore; fertility is 1.23 vs 0.97 children per woman.

Japan

2026
0
people
Median age
50.2
Fertility (TFR)
1.23
Working age (15–64)
58.8%
Trend
Declining (-0.55%)

Singapore

2026
0
people
Median age
36.8
Fertility (TFR)
0.97
Working age (15–64)
73.5%
Trend
Growing (+0.60%)

Population pyramids, 2026

Total Population

Japan

122.4M

vs

Singapore

5.9M

Youth (0-14)

Japan

11.0%

vs

Singapore

11.7%

Elderly (65+)

Japan

30.2%

vs

Singapore

14.8%

Where the two pyramids differ

The pyramids are overlaid so you can read the difference by age and sex: the longer bar in each band marks the country with more people of that age.

📊 Understanding the Population Difference Chart

This visualization shows where and by how much the populations differ between Japan and Singapore for each age group, split by gender:

Left Side (Males)

Blue = Japan has more males

Green = Singapore has more males

Right Side (Females)

Pink = Japan has more females

Orange = Singapore has more females

💡 How to Read: Each age group shows up to 2 bars - one on the left (male difference) and one on the right (female difference). The bar's color tells you which country has more people, and the bar's length shows by how much. For example, if you see a green bar on the left, it means Singapore has more males in that age group.

Notable Differences (>20% variance):

Ages 0-4: Japan has 1495.6% more people
Men: 1.8M more in Japan • Women: 1.8M more in Japan
Japan: 2.0M men, 1.9M women • Singapore: 124K men, 117K women
Population Ratio
3.8M
241K
Ages 5-9: Japan has 1866.1% more people
Men: 2.2M more in Japan • Women: 2.1M more in Japan
Japan: 2.3M men, 2.2M women • Singapore: 116K men, 112K women
Population Ratio
4.5M
229K
Ages 10-14: Japan has 2212.2% more people
Men: 2.5M more in Japan • Women: 2.4M more in Japan
Japan: 2.7M men, 2.5M women • Singapore: 115K men, 109K women
Population Ratio
5.2M
224K
Ages 15-19: Japan has 1957.2% more people
Men: 2.8M more in Japan • Women: 2.6M more in Japan
Japan: 2.9M men, 2.7M women • Singapore: 144K men, 131K women
Population Ratio
5.6M
274K
Ages 20-24: Japan has 1175.3% more people
Men: 2.9M more in Japan • Women: 2.8M more in Japan
Japan: 3.1M men, 3.0M women • Singapore: 262K men, 221K women
Population Ratio
6.2M
482K
Ages 25-29: Japan has 930.2% more people
Men: 2.8M more in Japan • Women: 2.7M more in Japan
Japan: 3.1M men, 3.0M women • Singapore: 330K men, 266K women
Population Ratio
6.1M
596K
Ages 30-34: Japan has 907.2% more people
Men: 2.7M more in Japan • Women: 2.7M more in Japan
Japan: 3.1M men, 2.9M women • Singapore: 325K men, 271K women
Population Ratio
6.0M
596K
Ages 35-39: Japan has 1086.6% more people
Men: 2.9M more in Japan • Women: 2.9M more in Japan
Japan: 3.2M men, 3.1M women • Singapore: 282K men, 250K women
Population Ratio
6.3M
532K
Ages 40-44: Japan has 1500.5% more people
Men: 3.4M more in Japan • Women: 3.3M more in Japan
Japan: 3.6M men, 3.5M women • Singapore: 231K men, 215K women
Population Ratio
7.1M
445K
Ages 45-49: Japan has 1956.0% more people
Men: 3.9M more in Japan • Women: 3.8M more in Japan
Japan: 4.1M men, 4.0M women • Singapore: 202K men, 194K women
Population Ratio
8.1M
395K
Ages 50-54: Japan has 2570.4% more people
Men: 4.7M more in Japan • Women: 4.7M more in Japan
Japan: 4.9M men, 4.9M women • Singapore: 187K men, 180K women
Population Ratio
9.8M
367K
Ages 55-59: Japan has 2609.2% more people
Men: 4.3M more in Japan • Women: 4.2M more in Japan
Japan: 4.5M men, 4.4M women • Singapore: 166K men, 163K women
Population Ratio
8.9M
329K
Ages 60-64: Japan has 2293.5% more people
Men: 3.7M more in Japan • Women: 3.7M more in Japan
Japan: 3.9M men, 3.8M women • Singapore: 163K men, 159K women
Population Ratio
7.7M
322K
Ages 65-69: Japan has 2370.6% more people
Men: 3.4M more in Japan • Women: 3.5M more in Japan
Japan: 3.6M men, 3.6M women • Singapore: 146K men, 147K women
Population Ratio
7.2M
292K
Ages 70-74: Japan has 3076.8% more people
Men: 3.5M more in Japan • Women: 3.8M more in Japan
Japan: 3.6M men, 3.9M women • Singapore: 112K men, 124K women
Population Ratio
7.5M
236K
Ages 75-79: Japan has 5044.6% more people
Men: 3.9M more in Japan • Women: 4.7M more in Japan
Japan: 4.0M men, 4.8M women • Singapore: 78K men, 93K women
Population Ratio
8.8M
171K
Ages 80-84: Japan has 7044.7% more people
Men: 2.5M more in Japan • Women: 3.4M more in Japan
Japan: 2.6M men, 3.5M women • Singapore: 36K men, 48K women
Population Ratio
6.0M
84K
Ages 85-89: Japan has 7692.2% more people
Men: 1.6M more in Japan • Women: 2.6M more in Japan
Japan: 1.6M men, 2.7M women • Singapore: 21K men, 34K women
Population Ratio
4.3M
55K
Ages 90-94: Japan has 9524.7% more people
Men: 675K more in Japan • Women: 1.6M more in Japan
Japan: 683K men, 1.6M women • Singapore: 8K men, 16K women
Population Ratio
2.3M
24K
Ages 95-99: Japan has 9439.9% more people
Men: 151K more in Japan • Women: 545K more in Japan
Japan: 153K men, 551K women • Singapore: 2K men, 5K women
Population Ratio
704K
7K
Ages 100+: Japan has 9645.3% more people
Men: 18K more in Japan • Women: 107K more in Japan
Japan: 18K men, 108K women • Singapore: 261 men, 1K women
Population Ratio
126K
1K

Demographic comparison, 2026

IndicatorJapanSingaporeDifference
Population (2026)122,427,7315,905,748Japan has 116.5 million more (20.7×)
Change 2025–2026-0.5% (Declining)+0.6% (Growing)
Median age (2026)50.236.8Japan older by 13.4 yrs
Total fertility rate1.23 — 0.87 below replacement0.97 — 1.13 below replacement
Fertility rate, 2030 (UN projection)1.261.01
Birth rate (per 1,000)6.18.6
Population 2050 (UN projection)105.1 million (-14.1%)6.1 million (+3.0%)
Peak populationPeaks 2009Peaks 2040

Differences by age group, 2026

AgeJapan (M / F)Singapore (M / F)Difference
0-41968K / 1879K124K / 117KJapan has 1495.6% more people aged 0-4
5-92301K / 2192K116K / 112KJapan has 1866.1% more people aged 5-9
10-142663K / 2521K115K / 109KJapan has 2212.2% more people aged 10-14
15-192897K / 2746K144K / 131KJapan has 1957.2% more people aged 15-19
20-243148K / 3004K262K / 221KJapan has 1175.3% more people aged 20-24
25-293134K / 3011K330K / 266KJapan has 930.2% more people aged 25-29
30-343062K / 2942K325K / 271KJapan has 907.2% more people aged 30-34
35-393217K / 3101K282K / 250KJapan has 1086.6% more people aged 35-39
40-443605K / 3524K231K / 215KJapan has 1500.5% more people aged 40-44
45-494098K / 4031K202K / 194KJapan has 1956.0% more people aged 45-49
50-544934K / 4866K187K / 180KJapan has 2570.4% more people aged 50-54
55-594495K / 4412K166K / 163KJapan has 2609.2% more people aged 55-59
60-643878K / 3829K163K / 159KJapan has 2293.5% more people aged 60-64
65-693575K / 3647K146K / 147KJapan has 2370.6% more people aged 65-69
70-743605K / 3893K112K / 124KJapan has 3076.8% more people aged 70-74
75-794025K / 4786K78K / 93KJapan has 5044.6% more people aged 75-79
80-842574K / 3459K36K / 48KJapan has 7044.7% more people aged 80-84
85-891627K / 2678K21K / 34KJapan has 7692.2% more people aged 85-89
90-94683K / 1586K8K / 16KJapan has 9524.7% more people aged 90-94
95-99153K / 551K2K / 5KJapan has 9439.9% more people aged 95-99
100+18K / 108K0K / 1KJapan has 9645.3% more people aged 100+

Frequently Asked Questions

Which has more people, Japan or Singapore?

Japan has more: 122.4 million vs 5.9 million in 2026 — 20.7× as many, 116.5 million more people.

Which country is older?

Japan, with a median age of 50.2 vs 36.8 in Singapore (2026).

Which has higher fertility?

Japan, at 1.23 children per woman vs 0.97 in Singapore. Replacement is 2.1, so both are below it.

How will Japan and Singapore compare in 2050?

By 2050 the UN projects Japan at 105.1 million (-14.1% from 2026) and Singapore at 6.1 million (+3.0%).

Are Japan and Singapore growing or shrinking?

Japan is declining (-0.5% in 2026); Singapore is growing (+0.6%).

Explore Individual Countries

Japan population pyramid→Singapore population pyramid→