Thailand Population 2026
Thailand's population in 2025 is estimated at 71,668,011, making it the 20th most populous country in the world. This represents a slight decline from the previous year, with a 1-year growth rate of -0.05%. Over the past decade, the country's population has grown at an average annual rate of 0.20%, reflecting a trend toward stabilization.
Population Trend (Thailand)
Population by Decade
Population milestones
How Thailand's population changed across key years (World Bank estimates).
Overview
Thailand, located in the East Asia & Pacific region, is classified as an upper middle-income country. With a 2025 population of 71,668,011, it ranks 20th globally by population size. The country's demographic trends show a notable shift: while the 10-year average growth rate stands at 0.20%, the latest year saw a negative growth rate of -0.05%, indicating that Thailand has entered a phase of population decline, likely driven by low fertility rates and an aging population.
Key Facts
- Thailand's population in 2025 is 71,668,011.
- The country experienced a 1-year population growth rate of -0.05% in 2025.
- Over the last 10 years, Thailand's population grew at an average rate of 0.20% annually.
- Thailand is ranked 20th in the world by population size.
- The country is located in the East Asia & Pacific region and is classified as an upper middle-income economy.
- The population decline in the latest year contrasts with the modest average growth over the past decade.