As of July 2026, the population of Comoros is 898.5 thousand. The number of inhabitants has increased by 15 thousand in the last year, representing a growth of 1.74%. The median age of the population has increased in recent years, rising from 18.8 years in 2016 to 21 years in 2026. Currently, life expectancy at birth is 65.7 years and population density is 482.8 inhabitants per square kilometer.
The population growth rate of Comoros peaked in 1978, reaching around 3.26% annually, but has since declined to approximately 1.71% in 2026. The annual increase in the number of people has also decreased from a peak of around 16.23 thousand in 2016 to nearly 15.37 thousand in 2026.
In Comoros, life expectancy at birth has been increasing, with the indicator rising from 59.9 years in 2006 to 65.7 years in 2026, representing an increase of almost 6 years over the past 2 decades.
The cities of Comoros are small, with the 5 most populated adding up to around 143.2 thousand inhabitants. The most populous city is Moroni, Grande Comore, con una diferencia significativa sobre las demás, alcanzando approximately 74.7 thousand inhabitants. It is followed by Moutsamoudou, Anjouan with 26.3 thousand and Fomboni, Mohéli with 17.3 thousand.
These are the 20 most populous cities in Comoros:
| # | City | Population |
|---|---|---|
| 1 | Moroni, Grande Comore | 74,749 |
| 2 | Moutsamoudou, Anjouan | 26,313 |
| 3 | Fomboni, Mohéli | 17,291 |
| 4 | Tsimbeo, Anjouan | 12,590 |
| 5 | Domoni, Anjouan | 12,262 |
| 6 | Mirontsi, Anjouan | 11,955 |
| 7 | Adda-Douéni, Anjouan | 10,858 |
| 8 | Ouani, Anjouan | 10,073 |
| 9 | Nkourani, Grande Comore | 10,000 |
| 10 | Sima, Anjouan | 8,737 |
| # | City | Population |
|---|---|---|
| 11 | Koni-Djodjo, Anjouan | 8,109 |
| 12 | Moya, Anjouan | 7,529 |
| 13 | Barakani, Anjouan | 6,089 |
| 14 | Chandra, Anjouan | 5,645 |
| 15 | Ouellah, Grande Comore | 5,478 |
| 16 | Ikoni, Grande Comore | 5,474 |
| 17 | Mrémani, Anjouan | 5,470 |
| 18 | Mbéni, Grande Comore | 5,128 |
| 19 | Mramani, Anjouan | 5,126 |
| 20 | Koki, Anjouan | 4,929 |