Population of San Marino
As of May 2025, the population of San Marino is 33.6 thousand. The number of inhabitants has decreased by 25 in the last year, representing a decline of 0.09%. The median age of the population has increased in recent years, rising from 43.5 years in 2015 to 48.2 years in 2025. Currently, life expectancy at birth is 83.9 years and population density is 550.5 inhabitants per square kilometer.
Population Growth
The population growth rate of San Marino peaked in 2011, reaching around 3.34% annually, but has since declined to approximately -0.07% in 2025. The annual increase in the number of people has also decreased from a peak of around 1.08 thousand in 2011 to nearly -25 in 2025.
Life Expectancy
In San Marino, life expectancy at birth has been increasing, with the indicator rising from 81.2 years in 2005 to 83.9 years in 2025, representing an increase of almost 3 years over the past 2 decades.
Most populous cities in San Marino
The cities of San Marino are small, with the 5 most populated adding up to around 25.9 thousand inhabitants. The most populous city is Serravalle, with approximately 9.3 thousand inhabitants. It is followed by Borgo Maggiore with 6.4 thousand and San Marino with 4.5 thousand.
These are the 10 most populous cities in San Marino:
| # | City | Population |
|---|---|---|
| 1 | Serravalle | 9,258 |
| 2 | Borgo Maggiore | 6,424 |
| 3 | San Marino | 4,500 |
| 4 | Domagnano | 3,161 |
| 5 | Fiorentino | 2,510 |
| # | City | Population |
|---|---|---|
| 6 | Acquaviva | 1,530 |
| 7 | Faetano | 1,177 |
| 8 | Falciano, Serravalle | 1,000 |
| 9 | Poggio di Chiesanuova, Chiesanuova | 951 |
| 10 | Monte Giardino, Montegiardino | 910 |