As of May 2026, the population of Nauru is 13 thousand. The number of inhabitants has increased by 81 in the last year, representing a growth of 0.64%. The median age of the population has decreased in recent years, rising from 20.1 years in 2016 to 19.9 years in 2026. Currently, life expectancy at birth is 64.7 years and population density is 653.1 inhabitants per square kilometer.
The population growth rate of Nauru peaked in 1965, reaching around 5.82% annually, but has since declined to approximately 0.62% in 2026. The annual increase in the number of people has also decreased from a peak of around 419 in 1983 to nearly 81 in 2026.
In Nauru, life expectancy at birth has been increasing, with the indicator rising from 58.4 years in 2006 to 64.7 years in 2026, representing an increase of more than 6 years over the past 2 decades.
The cities of Nauru are small, with the 5 most populated adding up to around 7.9 thousand inhabitants. The most populous city is Arijejen, Aiwo District, with approximately 2.4 thousand inhabitants. It is followed by Denigomodu, Denigomodu District with 1.8 thousand and Menen, Meneng District with 1.4 thousand.
These are the 14 most populous cities in Nauru:
| # | City | Population |
|---|---|---|
| 1 | Arijejen, Aiwo District | 2,381 |
| 2 | Denigomodu, Denigomodu District | 1,804 |
| 3 | Menen, Meneng District | 1,400 |
| 4 | Yangor, Aiwo District | 1,258 |
| 5 | Yaren, Yaren District | 1,100 |
| 6 | Boe, Boe District | 950 |
| 7 | Baiti, Baiti District | 810 |
| # | City | Population |
|---|---|---|
| 8 | Ronave, Anetan District | 795 |
| 9 | Arenibek, Buada District | 673 |
| 10 | Arubo, Ewa District | 537 |
| 11 | Anabar, Anabar District | 378 |
| 12 | Anibare, Anibare District | 373 |
| 13 | Uaboe, Uaboe District | 330 |
| 14 | Ijuw, Ijuw District | 180 |