IBRD only Population 2026

As of 2025, the population of the IBRD only (International Bank for Reconstruction and Development) aggregate stands at 4,979,421,568. This represents a 1-year growth rate of 0.55% and a 10-year average annual growth rate of 0.73%. The IBRD only grouping encompasses countries eligible for non-concessional World Bank lending, primarily middle-income nations.

Population
4,979,421,568
Estimate for 2026
1-year growth
+0.55%
10-year avg growth
+0.73%

Population Trend

Overview

The IBRD only aggregate population, comprising countries that borrow from the World Bank’s International Bank for Reconstruction and Development, has reached nearly 5 billion people in 2025. This demographic subset is heavily influenced by large middle-income economies such as China, India, Brazil, and Indonesia, which together account for a substantial share of the total. The latest data indicate a 1-year growth rate of 0.55%, reflecting a continued but slowing expansion typical of nations undergoing demographic transitions toward lower fertility rates and aging populations. Over the past decade, the average annual growth rate has been 0.73%, a figure that has gradually declined as many IBRD-only countries experience reduced birth rates and longer life expectancies.

FAQ

What is the population of IBRD only in 2025?
The population of the IBRD only aggregate is 4,979,421,568 as of 2025.
What is the growth rate for IBRD only in 2025?
The 1-year growth rate for 2025 is 0.55%, while the 10-year average annual growth rate is 0.73%.
What does IBRD only mean in World Bank terms?
IBRD only refers to countries eligible to borrow from the International Bank for Reconstruction and Development, which is the non-concessional lending arm of the World Bank, typically for middle-income nations.
How does the IBRD only population compare to the world population?
The IBRD only population of nearly 5 billion represents a major share of the global population, but the exact percentage is not provided in the data—it is known that this group includes many of the world’s largest middle-income countries.
Is the IBRD only population growing or declining?
The IBRD only population is growing, with a 1-year growth rate of 0.55% in 2025 and a decade-long average of 0.73%, though the rate has slowed over time.

Data sources & terms