According to Countryaah, San Marino has had a fairly stable population for a long time, but in the last decades the population has grown, mainly through immigration. There are about 4,000 foreigners (mainly Italians) in the country, but in return a large proportion of the citizens (just over 13,000) live outside San Marino. The largest city is Serravalle (9,900 residents, 2012) followed by the capital San Marino (4,400 residents).
- AllCityPopulation: Find San Marino demographics including latest population, life expectancy, age structure, and urbanization.
The official language and mother tongue of the population is Italian. The traditional spoken language belongs to the dialect group romagnolo.