As of May 2026, the population of Northern Mariana Islands is 50.4 thousand. The number of inhabitants has increased by 198 in the last year, representing a growth of 0.43%. The median age of the population has increased in recent years, rising from 36.2 years in 2016 to 37 years in 2026. Currently, life expectancy at birth is 78 years and population density is 110.4 inhabitants per square kilometer.
The population growth rate of Northern Mariana Islands peaked in 1996, reaching around 13.65% annually, but has since declined to approximately 0.39% in 2026. The annual increase in the number of people has also decreased from a peak of around 7.74 thousand in 1998 to nearly 198 in 2026.
Life expectancy at birth has increased slightly in Northern Mariana Islands, with the indicator rising from 77.2 years in 2006 to 78 year in 2026, representing an increase of almost 1 year over the past 2 decades.
These are the 6 most populous cities in Northern Mariana Islands:
| # | City | Population |
|---|---|---|
| 1 | Saipan | 48,220 |
| 2 | San Jose Village, Tinian | 15,000 |
| 3 | Garapan, Saipan | 5,225 |
| # | City | Population |
|---|---|---|
| 4 | China Town Village, Saipan | 1,000 |
| 5 | Capitol Hill Village, Saipan | 979 |
| 6 | Songsong, Rota | 593 |