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United States vs Mexico population, 1950 to 2100

United States had 343.48 million people in 2023, versus 129.74 million in Mexico. Compare UN estimates and projections to 2100.

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What the data shows

  • United States: 154.20M in 1950, 421.28M in 2100 (projected) (2.7× higher). The latest estimate is 343.48M in 2023.
  • Mexico: 27.59M in 1950, 130.25M in 2100 (projected) (4.7× higher). The latest estimate is 129.74M in 2023. It is projected to peak at 149.94M in 2058.

About this chart

The UN projects United States to reach 421.28 million people in 2100, above its 2023 estimate of 343.48 million. At the estimated endpoint, United States has 343.48 million people against 129.74 million for Mexico. In 1950, the corresponding totals were 154.20 million for United States and 27.59 million for Mexico. All values are population totals, rather than population density or annual growth rates.

By 2100, the UN medium-variant projection reaches 421.28 million people for United States and 130.25 million for Mexico. Estimates end in 2023; later values are conditional projections rather than observed counts. Future fertility, mortality and migration can move the eventual totals away from this path. Comparing the same projection variant keeps the two countries on a consistent basis.

The data

Source: UN World Population Prospects 2024 via Our World in Data; estimates to 2023, medium-variant projections after, millions of people. Retrieved November 5, 2026. UN estimates through 2023; later years are medium-variant projections, not observed counts.

United States vs Mexico population, Millions of people, 1950–2100; projected after 2023, 1950–2100
Date🇺🇸 United States🇲🇽 Mexico
1950154.20M27.59M
1951156.48M28.32M
1952158.79M29.09M
1953161.17M29.90M
1954163.64M30.75M
1955166.20M31.65M
1956168.82M32.59M
1957171.50M33.56M
1958174.22M34.58M
1959177.15M35.63M
1960180.27M36.72M
1961183.49M37.89M
1962186.72M39.13M
1963189.83M40.42M
1964192.82M41.77M
1965195.65M43.17M
1966198.27M44.63M
1967200.70M46.13M
1968203.01M47.67M
1969205.30M49.23M
1970207.80M50.81M
1971210.43M52.41M
1972212.84M54.03M
1973215.01M55.67M
1974217.08M57.32M
1975219.13M58.98M
1976221.17M60.65M
1977223.26M62.31M
1978225.40M63.98M
1979227.58M65.65M
1980229.86M67.30M
1981232.20M68.89M
1982234.58M70.43M
1983236.99M71.97M
1984239.35M73.51M
1985241.69M75.04M
1986243.95M76.59M
1987246.16M78.14M
1988248.39M79.70M
1989250.68M81.25M
1990253.37M82.82M
1991256.47M84.43M
1992259.61M86.04M
1993262.63M87.65M
1994265.47M89.26M
1995268.21M90.86M
1996270.86M92.45M
1997273.47M94.02M
1998276.12M95.58M
1999278.79M97.12M
2000281.48M98.63M
2001284.28M100.10M
2002287.08M101.55M
2003289.91M102.98M
2004292.79M104.39M
2005295.72M105.81M
2006298.73M107.25M
2007301.84M108.77M
2008304.97M110.37M
2009308.02M112.00M
2010311.06M113.62M
2011314.11M115.24M
2012317.12M116.82M
2013320.11M118.34M
2014323.12M119.78M
2015326.13M121.07M
2016329.18M122.25M
2017332.20M123.40M
2018335.06M124.57M
2019337.79M125.76M
2020339.44M126.80M
2021340.16M127.65M
2022341.53M128.61M
2023343.48M129.74M
2024345.43M130.86M
2025347.28M131.95M
2026349.04M133.00M
2027350.73M134.02M
2028352.40M135.01M
2029354.05M135.97M
2030355.65M136.90M
2031357.22M137.81M
2032358.77M138.69M
2033360.29M139.54M
2034361.80M140.36M
2035363.28M141.15M
2036364.73M141.91M
2037366.15M142.64M
2038367.55M143.34M
2039368.91M144.00M
2040370.21M144.62M
2041371.47M145.22M
2042372.70M145.78M
2043373.90M146.30M
2044375.03M146.79M
2045376.11M147.24M
2046377.13M147.65M
2047378.12M148.03M
2048379.06M148.37M
2049379.97M148.68M
2050380.85M148.95M
2051381.71M149.18M
2052382.54M149.38M
2053383.36M149.55M
2054384.15M149.69M
2055384.89M149.79M
2056385.64M149.87M
2057386.43M149.92M
2058387.25M149.94M
2059388.09M149.93M
2060388.92M149.89M
2061389.77M149.83M
2062390.65M149.74M
2063391.55M149.62M
2064392.44M149.47M
2065393.35M149.30M
2066394.29M149.10M
2067395.27M148.88M
2068396.25M148.63M
2069397.24M148.36M
2070398.22M148.06M
2071399.19M147.74M
2072400.15M147.40M
2073401.08M147.03M
2074401.99M146.63M
2075402.91M146.21M
2076403.82M145.77M
2077404.68M145.31M
2078405.52M144.83M
2079406.32M144.32M
2080407.08M143.80M
2081407.87M143.25M
2082408.66M142.69M
2083409.40M142.11M
2084410.13M141.51M
2085410.83M140.89M
2086411.52M140.26M
2087412.24M139.61M
2088412.98M138.95M
2089413.73M138.28M
2090414.46M137.60M
2091415.19M136.90M
2092415.93M136.19M
2093416.66M135.48M
2094417.39M134.75M
2095418.12M134.01M
2096418.80M133.26M
2097419.46M132.52M
2098420.10M131.76M
2099420.70M131.01M
2100421.28M130.25M

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Frequently asked questions

Which country has more people, United States or Mexico?

United States has more people in the 2023 UN estimates: about 343.48 million, compared with 129.74 million in Mexico. The gap is approximately 213.74 million.

What populations are projected for 2100?

The UN medium-variant projection gives United States 421.28 million people and Mexico 130.25 million in 2100. These values are projections, not current population estimates.

Where do the estimates end and projections begin?

The UN World Population Prospects series uses estimates through 2023. Values from 2024 onward follow its medium-variant projection. Both countries use the same source and scenario.

Where does this data come from?

UN World Population Prospects 2024 via Our World in Data; estimates to 2023, medium-variant projections after, millions of people. Retrieved November 5, 2026. UN estimates through 2023; later years are medium-variant projections, not observed counts. You can download the full table as a CSV from this page.

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Related data

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WorldReal data

Population of United States

US: 343.48M in 2023; UN projects 421.28M in 2100. The 1950 estimate was 154.2M. Future values follow the medium scenario.

US statesReal data

US fertility rate

The US fertility rate fell from 3.65 births per woman in 1960 to 1.63 in 2024, just above France (1.61) and the UK (1.55), and well above Japan (1.15).

US statesReal data

US birth rate

23.7 births per 1,000 people in 1960 to 10.6 in 2024: the US. World Bank crude birth rate, not births per woman.