OECD vs United States: Historical population data

OECD
1.41 billion Persons
in 2025
United States
341.79 million Persons
in 2025
OECD rank
3rd
United States rank
4th

Historical population data over time

  • OECD
  • United States
0500.0M1.0B1.5B195019872025

How they compare

OECD currently reports 1.41 billion Persons against 341.79 million Persons in United States, a difference of 1.06 billion Persons.

That makes OECD's figure about 4.1 times United States's.

Across all 76 years both countries report, OECD has been ahead every year.

OECD ranks 3rd and United States ranks 4th of 43 countries.

OECD has averaged higher in every one of the 8 decades both report.

Head to head by decade

Decade OECD United States Difference Ahead
1950s 753.70 million Persons 164.74 million Persons 588.96 million Persons OECD
1960s 861.54 million Persons 192.50 million Persons 669.04 million Persons OECD
1970s 966.34 million Persons 215.03 million Persons 751.32 million Persons OECD
1980s 1.06 billion Persons 236.96 million Persons 821.99 million Persons OECD
1990s 1.15 billion Persons 264.54 million Persons 887.92 million Persons OECD
2000s 1.24 billion Persons 294.37 million Persons 947.50 million Persons OECD
2010s 1.33 billion Persons 320.31 million Persons 1.01 billion Persons OECD
2020s 1.39 billion Persons 336.04 million Persons 1.05 billion Persons OECD

Averages of every year both report within each decade.

Frequently asked questions

Which has higher historical population data, OECD or United States?
OECD, at 1.41 billion Persons against 341.79 million Persons in United States as of 2025.
What is the difference in historical population data between OECD and United States?
1.06 billion Persons, with OECD ahead.
How many years of comparable data are there for OECD and United States?
76 years are reported by both, from 1950 to 2025.
How do OECD and United States rank globally for historical population data?
OECD ranks 3rd and United States ranks 4th of 43 countries.
Where does this data come from?
Organisation for Economic Co-operation and Development, published as Historical population data. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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OECD vs United States: Historical population data. Statizoid, drawing on Organisation for Economic Co-operation and Development. Retrieved 20 August 2026, from https://population.statizoid.com/compare/historical-population-data/oecd/united-states/

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About this data

Indicator
Historical population data
Unit
Persons
Source
Organisation for Economic Co-operation and Development
Licence
OECD Terms and Conditions (attribution required)
Coverage
56 places, 4,256 data points, 1950–2025
Last refreshed

This dataset presents annual population data from 1961 by sex and five year age groups as well as the share of children, youth, the elderly, old-age and total dependency ratios. The data is available for all member countries as well as for the EU27 and G20 countries, Argentina, Brazil, China, India, Indonesia, Russia, Saudi Arabia, Singapore, South Africa and the World total. The data refer to mid-year estimates of the population. See country details in Historical population metadata.