Population of French Guiana

As of April 2025, the population of French Guiana is 325.6 thousand. The number of inhabitants has increased by 8 thousand in the last year, representing a growth of 2.40%. The median age of the population has increased in recent years, rising from 23.7 years in 2015 to 24.4 years in 2025. Currently, life expectancy at birth is 78 years and population density is 4 inhabitants per square kilometer.

Population Growth

The population growth rate of French Guiana peaked in 1984, reaching around 5.88% annually, but has since declined to approximately 2.35% in 2025. However, the annual increase in the number of people continues to rise, reaching around 7.7 thousand in 2025.

Life Expectancy

In French Guiana, life expectancy at birth has been increasing, with the indicator rising from 74.3 years in 2005 to 78 years in 2025, representing an increase of almost 4 years over the past 2 decades.

Most populous cities in French Guiana

The cities of French Guiana are small, with the 5 most populated adding up to around 155.2 thousand inhabitants. The most populous city is Cayenne, Guyane, con una diferencia significativa sobre las demás, alcanzando approximately 61.6 thousand inhabitants. It is followed by Matoury, Guyane with 26.4 thousand and Saint-Laurent-du-Maroni, Guyane with 24.3 thousand.

These are the 18 most populous cities in French Guiana: