shapecharge / Getty Images Not all countries have the same average retirement age. Key Takeaways Libya has the highest official retirement age at 70 years old. Other countries with high retirement ages include Australia, Greece, Iceland, Israel, Italy, the Netherlands, Spain, and the United States. Countries with low official retirement ages often have high effective retirement ages, meaning people tend to work until their mid-60s regardless of where they live. While the United States will avoid a ...