OECD members Population 2026

The combined population of OECD member countries is estimated at 1,396,877,448 in 2025, representing a diverse group of high-income and emerging economies across the globe. This aggregate figure includes all 38 member nations as defined by the World Bank's categorization. The population reflects a moderate growth trajectory relative to many other regional blocs.

Population
1,396,877,448
Estimate for 2026
1-year growth
+0.65%
10-year avg growth
+0.54%

Population Trend

Overview

As of 2025, the OECD member states collectively host approximately 1.4 billion people, accounting for a significant share of the world's developed and industrialized economies. The latest 1-year growth rate stands at 0.65%, indicating a modest but steady increase from the previous year. Over the past decade, the average annual growth rate has been 0.54%, suggesting that population expansion among OECD members has been relatively stable and slightly accelerating in the near term.

FAQ

What is the total population of OECD members in 2025?
The combined population of OECD member countries in 2025 is 1,396,877,448.
What is the population growth rate of OECD members in 2025?
The 1-year growth rate for OECD members in 2025 is 0.65%.
How fast has the OECD population grown over the last 10 years?
The average annual growth rate over the past 10 years is 0.54%.
How many countries are in the OECD?
There are 38 member countries in the OECD as of the latest data.
Is the OECD population growing or declining?
The OECD population is growing, with a one-year growth rate of 0.65% in 2025 and a 10-year average growth of 0.54%.

Data sources & terms