Average age of population | Guernsey – yearly data, chart and table

The average age of population of Guernsey in 2025 amounted to 44.28 years old, which is 0.392% more than in 2024, when it was  44.11 years old. It has been growing in this country for already 4 years in a row. Over the entire period of data from the United Nations Department of Economic and Social Affairs since 1950, this indicator has increased in 1.31 times. The lowest average age of population was recorded in 1976, when it was 31.80 years old. The highest value was in 2025, when average age of population in Guernsey reached 44.28 years old. The data is sourced from the UN report "World Population Prospects 2024", with the values for 2024 and 2025 being projections.