United States vs United Kingdom: Population, GDP, Life Expectancy & More Compared (2026)

At a glance

Live population · UN WPP

United States

North America · #3 of 238 by population

Live population

349,540,596

+0.5% a year · full profile · atlas

United Kingdom

Europe · #22 of 238 by population

Live population

70,039,631

+0.5% a year · full profile · atlas

United States has 5× the population of United Kingdom (83.3% vs 16.7% of the two combined).

United States vs United Kingdom: 28 indicators side by side

Latest available figures · October 2026

Indicator	United States	United Kingdom	Difference
👥 Population
Population people	349,540,596	70,039,631	United States 5×
Population growth rate % per year	+0.5	+0.5	0 pts
Population density people per km²	35.62026	287.52026	-252
Surface area km²	9,831,5102023	243,6102023	United States 40×
Birth rate births per 1,000 people	10.62024	9.92024	+0.7
Death rate deaths per 1,000 people	92024	9.72024	-0.7
Net migration rate per 1,000 people per year	+3.4	+5.2	-1.8
Urban population % of population	80.22025	83.32025	-3.1 pts
Sex ratio males per 100 females	101	97.1	+3.9
❤️ Demographics & Health
Life expectancy years	78.92024	81.42024	-2.5
Fertility rate births per woman	1.632024	1.552024	+0.08
Median age years	38.7	40.2	-1.5
Infant mortality deaths per 1,000 live births	4.7	3.4	+1.3
Population under 15 % of population	17.12025	172025	+0.1 pts
Population aged 65+ % of population	18.42025	19.72025	-1.3 pts
💰 Economy
GDP current US$	$30.77T2025	$4.00T2025	United States 7.7×
GDP per capita current US$	$90,0272025	$57,6022025	United States 1.6×
Unemployment rate % of labor force	4.22025	4.72025	-0.5 pts
Inflation rate % annual, consumer prices	2.92024	3.92025	-0.9 pts
🌱 Environment & Energy
CO₂ emissions Mt CO₂ per year	4,632.22024	292.42024	United States 16×
CO₂ emissions per capita tonnes per person	13.622024	4.222024	+9.4
Energy use per capita kg of oil equivalent per person	6,3612024	2,0692024	United States 3.1×
Renewable energy share % of final energy	10.92021	12.22021	-1.3 pts
Forest area % of land area	33.92023	13.32023	+20.6 pts
Freshwater resources per capita m³ per person per year	8,4372022	2,1442022	United States 3.9×
Water stress % of resources withdrawn	15.82022	5.82022	+10 pts
📶 Digital
Internet users % of population	94.72024	95.52024	-0.8 pts
Mobile subscriptions per 100 people	113.22024	121.62024	-8.5

▲ marks the higher value (for death rate, infant mortality, unemployment, inflation, CO₂ and water stress: the lower value). "Difference" is the ratio for absolute measures and United States minus United Kingdom for rates and shares. Years in grey are the latest available for that country.

United States compared with United Kingdom

Updated October 2026

United States has a live population of about 349,540,596 (#3 in the world) and United Kingdom about 70,039,631 (#22), so United States has 5 times as many people as United Kingdom. United States is growing at 0.5% a year and United Kingdom at 0.5%.

By area United States is larger: 9,831,510 km² against 243,610 km², which gives population densities of 35.6 people per km² in United States and 287.5 in United Kingdom.

United States's economy is worth $30.77T (2025) and United Kingdom's $4.00T (2025); per person that is $90,027 in United States versus $57,602 in United Kingdom, so the average United States resident produces 1.6 times as much.

Life expectancy is 78.9 years in United States and 81.4 in United Kingdom; women have 1.6 children on average in United States compared with 1.6 in United Kingdom; the median age is 38.7 versus 40.2 years.

80.2% of United States's people live in cities against 83.3% in United Kingdom; 94.7% use the internet in United States and 95.5% in United Kingdom; CO₂ emissions per person are 13.6 t in United States and 4.2 t in United Kingdom.