- Denmark has a population of 5.8 million people as of 2019. Despite a low birth rate, it keeps growing thanks to immigration.
- Denmark has been inhabited since around 12,500 BC and agriculture has been evident since 3,900 BC.
- Denmark's population is the second happiest in the world according to the 2019 World Happiness Report.
- Denmark's current flag design was first used in 1219. No other modern country has used its flag for so long.
- There are more bicycles in Copenhagen, Denmark, than people.
- The least corrupt countries in the world are New Zealand and Denmark, according to the Corruptions Perception Index.
- The Danish monarchy is over 1000 years old, making it the oldest monarchy in Europe still existing today.
- In Denmark, it's illegal to burn foreign flags, but not illegal to burn the Danish flag.
- Canada and Denmark have been fighting over an uninhabited island by leaving each other bottles of alcohol and changing their flags since the 1930s.
- 99% of Denmark's Jews survived the Holocaust because the Danish organized a massive evacuation to neutral Sweden.
- Iceland severed ties to Denmark and became an independent republic only in 1944.
- Germany, Denmark, Iceland and other countries have official rules about what a baby can be named.
- Bluetooth got its name from the second king of Denmark, King Harald Bluetooth.
- In Denmark, if you are unmarried at 25, you'll get cinnamon thrown all over you on your birthday.
- Denmark charges a tax of 150% on all new car purchases.
- Many cinemas in Denmark show Danish subtitles on Danish films, because of difficulties understanding different dialects.
- There is an underground vault in Denmark containing every Lego set ever.
- The unemployment rate in Denmark is currently so low (4.3%) that Danish companies are desperate to find skilled laborers to hire.
- 32% of journeys in Amsterdam are by bicycle, while in Copenhagen it's 35%.
- Denmark has more pigs than people.
- The U.S. tried to purchase Greenland from Denmark for US$100 million in 1946.
- Denmark holds the largest 4th of July celebration outside the U.S.