PopulationPyramids
UN World Population Prospects Data Visualized

USA vs Vietnam: Population Comparison 2026

The United States has 246,858,064 more people than Vietnam (3.4× as many): 349.0 million vs 102.2 million in 2026. Median age is 38.7 in the United States and 33.9 in Vietnam; fertility is 1.63 vs 1.86 children per woman.

United States

2026
0
people
Median age
38.7
Fertility (TFR)
1.63
Working age (15–64)
64.3%
Trend
Growing (+0.51%)

Vietnam

2026
0
people
Median age
33.9
Fertility (TFR)
1.86
Working age (15–64)
67.7%
Trend
Growing (+0.57%)

Population pyramids, 2026

Total Population

United States

349.0M

vs

Vietnam

102.2M

Youth (0-14)

United States

16.9%

vs

Vietnam

22.4%

Elderly (65+)

United States

18.8%

vs

Vietnam

9.9%

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 United States and Vietnam for each age group, split by gender:

Left Side (Males)

Blue = United States has more males

Green = Vietnam has more males

Right Side (Females)

Pink = United States has more females

Orange = Vietnam 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 Vietnam has more males in that age group.

Notable Differences (>20% variance):

Ages 0-4: United States has 176.3% more people
Men: 6.0M more in United States • Women: 5.9M more in United States
United States: 9.5M men, 9.1M women • Vietnam: 3.5M men, 3.2M women
Population Ratio
18.6M
6.7M
Ages 5-9: United States has 161.4% more people
Men: 6.1M more in United States • Women: 5.9M more in United States
United States: 9.9M men, 9.5M women • Vietnam: 3.9M men, 3.6M women
Population Ratio
19.4M
7.4M
Ages 10-14: United States has 139.4% more people
Men: 6.3M more in United States • Women: 5.9M more in United States
United States: 10.8M men, 10.2M women • Vietnam: 4.5M men, 4.3M women
Population Ratio
21.0M
8.8M
Ages 15-19: United States has 198.0% more people
Men: 7.8M more in United States • Women: 7.3M more in United States
United States: 11.7M men, 11.0M women • Vietnam: 3.9M men, 3.8M women
Population Ratio
22.7M
7.6M
Ages 20-24: United States has 254.9% more people
Men: 8.8M more in United States • Women: 8.1M more in United States
United States: 12.1M men, 11.4M women • Vietnam: 3.3M men, 3.3M women
Population Ratio
23.5M
6.6M
Ages 25-29: United States has 261.4% more people
Men: 8.6M more in United States • Women: 7.9M more in United States
United States: 11.8M men, 11.0M women • Vietnam: 3.2M men, 3.1M women
Population Ratio
22.8M
6.3M
Ages 30-34: United States has 202.3% more people
Men: 8.3M more in United States • Women: 7.4M more in United States
United States: 12.2M men, 11.3M women • Vietnam: 3.9M men, 3.9M women
Population Ratio
23.5M
7.8M
Ages 35-39: United States has 180.2% more people
Men: 8.2M more in United States • Women: 7.4M more in United States
United States: 12.6M men, 11.8M women • Vietnam: 4.4M men, 4.3M women
Population Ratio
24.3M
8.7M
Ages 40-44: United States has 183.3% more people
Men: 7.9M more in United States • Women: 7.2M more in United States
United States: 12.0M men, 11.3M women • Vietnam: 4.1M men, 4.1M women
Population Ratio
23.3M
8.2M
Ages 45-49: United States has 220.6% more people
Men: 7.9M more in United States • Women: 7.2M more in United States
United States: 11.2M men, 10.7M women • Vietnam: 3.4M men, 3.5M women
Population Ratio
21.9M
6.8M
Ages 50-54: United States has 224.3% more people
Men: 7.2M more in United States • Women: 6.7M more in United States
United States: 10.3M men, 9.9M women • Vietnam: 3.0M men, 3.2M women
Population Ratio
20.2M
6.2M
Ages 55-59: United States has 267.1% more people
Men: 7.8M more in United States • Women: 7.3M more in United States
United States: 10.5M men, 10.3M women • Vietnam: 2.7M men, 2.9M women
Population Ratio
20.8M
5.7M
Ages 60-64: United States has 310.9% more people
Men: 8.2M more in United States • Women: 7.9M more in United States
United States: 10.5M men, 10.7M women • Vietnam: 2.4M men, 2.8M women
Population Ratio
21.2M
5.2M
Ages 65-69: United States has 394.1% more people
Men: 8.1M more in United States • Women: 8.1M more in United States
United States: 9.9M men, 10.4M women • Vietnam: 1.8M men, 2.3M women
Population Ratio
20.3M
4.1M
Ages 70-74: United States has 513.9% more people
Men: 6.9M more in United States • Women: 7.3M more in United States
United States: 8.0M men, 9.0M women • Vietnam: 1.1M men, 1.6M women
Population Ratio
17.0M
2.8M
Ages 75-79: United States has 692.0% more people
Men: 5.4M more in United States • Women: 6.1M more in United States
United States: 6.0M men, 7.1M women • Vietnam: 623K men, 1.0M women
Population Ratio
13.2M
1.7M
Ages 80-84: United States has 895.8% more people
Men: 3.4M more in United States • Women: 4.1M more in United States
United States: 3.6M men, 4.6M women • Vietnam: 270K men, 561K women
Population Ratio
8.3M
830K
Ages 85-89: United States has 834.8% more people
Men: 1.6M more in United States • Women: 2.3M more in United States
United States: 1.8M men, 2.6M women • Vietnam: 122K men, 349K women
Population Ratio
4.4M
470K
Ages 90-94: United States has 821.2% more people
Men: 655K more in United States • Women: 1.1M more in United States
United States: 694K men, 1.3M women • Vietnam: 40K men, 173K women
Population Ratio
2.0M
212K
Ages 95-99: United States has 934.6% more people
Men: 160K more in United States • Women: 337K more in United States
United States: 166K men, 384K women • Vietnam: 6K men, 47K women
Population Ratio
550K
53K
Ages 100+: United States has 869.5% more people
Men: 18K more in United States • Women: 51K more in United States
United States: 18K men, 59K women • Vietnam: 394 men, 8K women
Population Ratio
77K
8K

Demographic comparison, 2026

IndicatorUnited StatesVietnamDifference
Population (2026)349,035,494102,177,430United States has 246.9 million more (3.4×)
Change 2025–2026+0.5% (Growing)+0.6% (Growing)
Median age (2026)38.733.9United States older by 4.8 yrs
Total fertility rate1.63 — 0.48 below replacement1.86 — 0.24 below replacement
Fertility rate, 2030 (UN projection)1.631.82
Birth rate (per 1,000)10.512.8
Population 2050 (UN projection)380.8 million (+9.1%)110.0 million (+7.7%)
Peak populationPeaks 2100Peaks 2049

Differences by age group, 2026

AgeUnited States (M / F)Vietnam (M / F)Difference
0-49549K / 9091K3537K / 3208KUnited States has 176.3% more people aged 0-4
5-99938K / 9464K3860K / 3563KUnited States has 161.4% more people aged 5-9
10-1410774K / 10190K4473K / 4284KUnited States has 139.4% more people aged 10-14
15-1911671K / 11002K3858K / 3751KUnited States has 198.0% more people aged 15-19
20-2412122K / 11403K3324K / 3306KUnited States has 254.9% more people aged 20-24
25-2911801K / 11017K3169K / 3145KUnited States has 261.4% more people aged 25-29
30-3412170K / 11342K3880K / 3898KUnited States has 202.3% more people aged 30-34
35-3912570K / 11772K4353K / 4334KUnited States has 180.2% more people aged 35-39
40-4412004K / 11314K4100K / 4130KUnited States has 183.3% more people aged 40-44
45-4911227K / 10699K3367K / 3472KUnited States has 220.6% more people aged 45-49
50-5410280K / 9907K3047K / 3179KUnited States has 224.3% more people aged 50-54
55-5910481K / 10283K2706K / 2949KUnited States has 267.1% more people aged 55-59
60-6410548K / 10660K2390K / 2771KUnited States has 310.9% more people aged 60-64
65-699910K / 10428K1774K / 2342KUnited States has 394.1% more people aged 65-69
70-748040K / 8981K1139K / 1634KUnited States has 513.9% more people aged 70-74
75-796042K / 7108K623K / 1037KUnited States has 692.0% more people aged 75-79
80-843636K / 4632K270K / 561KUnited States has 895.8% more people aged 80-84
85-891758K / 2638K122K / 349KUnited States has 834.8% more people aged 85-89
90-94694K / 1262K40K / 173KUnited States has 821.2% more people aged 90-94
95-99166K / 384K6K / 47KUnited States has 934.6% more people aged 95-99
100+18K / 59K0K / 8KUnited States has 869.5% more people aged 100+

Frequently Asked Questions

Which has more people, USA or Vietnam?

The United States has more: 349.0 million vs 102.2 million in 2026 — 3.4× as many, 246.9 million more people.

Which country is older?

The United States, with a median age of 38.7 vs 33.9 in Vietnam (2026).

Which has higher fertility?

Vietnam, at 1.86 children per woman vs 1.63 in the United States. Replacement is 2.1, so both are below it.

How will USA and Vietnam compare in 2050?

By 2050 the UN projects the United States at 380.8 million (+9.1% from 2026) and Vietnam at 110.0 million (+7.7%).

Are USA and Vietnam growing or shrinking?

The United States is growing (+0.5% in 2026); Vietnam is growing (+0.6%).

Explore Individual Countries

United States population pyramid→Vietnam population pyramid→

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