As of May 2026, the population of Guernsey is 64.2 thousand. The number of inhabitants has increased by 247 in the last year, representing a growth of 0.37%. The median age of the population has decreased in recent years, rising from 42.8 years in 2016 to 40.4 years in 2026. Currently, life expectancy at birth is 83.4 years and population density is 1 thousand inhabitants per square kilometer.
The population growth rate of Guernsey peaked in 1967, reaching around 1.42% annually, but has since declined to approximately 0.38% in 2026. The annual increase in the number of people has also decreased from a peak of around 723 in 1990 to nearly 247 in 2026.
In Guernsey, life expectancy at birth has been increasing, with the indicator rising from 81.8 years in 2006 to 83.4 years in 2026, representing an increase of almost 2 years over the past 2 decades.
The cities of Guernsey are small, with the 5 most populated adding up to around 38.7 thousand inhabitants. The most populous city is Saint Peter Port, St Peter Port, with approximately 16.5 thousand inhabitants. It is followed by Vale Parish with 9.6 thousand and Saint Sampson, St Sampson with 9 thousand.
These are the 12 most populous cities in Guernsey:
| # | City | Population |
|---|---|---|
| 1 | Saint Peter Port, St Peter Port | 16,488 |
| 2 | Vale Parish | 9,646 |
| 3 | Saint Sampson, St Sampson | 8,966 |
| 4 | Saint Pierre du Bois Parish | 2,001 |
| 5 | Forest Parish, Forest | 1,624 |
| 6 | Sark | 600 |
| # | City | Population |
|---|---|---|
| 7 | St Anne, Alderney | |
| 8 | Torteval | |
| 9 | Saint Andrew | |
| 10 | Saint Saviour | |
| 11 | St Martin | |
| 12 | Castel |