South Korea's Elderly Dependency Ratio Projected to Surpass Japan by 2045, Highest in OECD
South Korea is projected to experience the highest elderly dependency ratio among OECD member countries by 2045, surpassing Japan. According to the latest OECD population projections, South Korea's old-age dependency ratio is expected to increase from 31.3 people in 2026 to 103.3 people in 2070. This ratio signifies the number of individuals aged 65 and over supported by 100 people of working age (15-64). Currently, South Korea's old-age dependency ratio is the 18th lowest among the 38 OECD countries. However, it is forecast to reach 68.4 people in 2045, exceeding Japan's projected 67.6, and subsequently maintain the highest ratio through 2070. The total dependency ratio, which includes both young and elderly dependents, is also rising fastest in South Korea, projected to reach 90.2 people in 2048, surpassing Greece, and 117.3 people by 2070. This demographic shift is primarily driven by a rapidly declining birth rate.