As of May 2026, the population of Denmark is 6 million. The number of inhabitants has increased by 28 thousand in the last year, representing a growth of 0.48%. The median age of the population has increased in recent years, rising from 40.8 years in 2016 to 41.2 years in 2026. Currently, life expectancy at birth is 82.5 years and population density is 141.5 inhabitants per square kilometer.
The population growth rate of Denmark peaked in 1966, reaching around 0.85% annually, but has since declined to approximately 0.47% in 2026. The annual increase in the number of people has also decreased from a peak of around 40.76 thousand in 1966 to nearly 28.35 thousand in 2026.
In Denmark, life expectancy at birth has been increasing, with the indicator rising from 78.2 years in 2006 to 82.5 years in 2026, representing an increase of more than 4 years over the past 2 decades.
The cities of Denmark are mostly small, but 4 stand out with more than 100 thousand inhabitants. The most populous city is Copenhagen, Capital Region, con una diferencia significativa sobre las demás, alcanzando approximately 1.2 million inhabitants. It is followed by Århus, Central Jutland with 285.3 thousand and Odense, South Denmark with 180.9 thousand.
These are the 20 most populous cities in Denmark:
| # | City | Population |
|---|---|---|
| 1 | Copenhagen, Capital Region | 1,153,615 |
| 2 | Århus, Central Jutland | 285,273 |
| 3 | Odense, South Denmark | 180,863 |
| 4 | Aalborg, North Denmark | 142,937 |
| 5 | Frederiksberg, Capital Region | 95,029 |
| 6 | Esbjerg, South Denmark | 71,698 |
| 7 | Randers, Central Jutland | 62,802 |
| 8 | Kolding, South Denmark | 61,638 |
| 9 | Horsens, Central Jutland | 61,074 |
| 10 | Vejle, South Denmark | 60,231 |
| # | City | Population |
|---|---|---|
| 11 | Hvidovre, Capital Region | 53,527 |
| 12 | Klinteby Frihed, Zealand | 53,443 |
| 13 | Avedøre, Capital Region | 53,443 |
| 14 | Roskilde, Zealand | 51,916 |
| 15 | Herning, Central Jutland | 50,565 |
| 16 | Silkeborg, Central Jutland | 49,747 |
| 17 | Hørsholm, Capital Region | 47,680 |
| 18 | Greve, Zealand | 47,671 |
| 19 | Hedensted, Central Jutland | 47,099 |
| 20 | Valby, Capital Region | 46,161 |