Sønderborg Population 2026

Sønderborg has a population of 27,766, making it the #35 biggest city in 🇩🇰 Denmark, located in South Denmark. Roughly 0.5% of Denmark's population lives here. It is about 42× smaller than Copenhagen, the country's biggest city.

Location of Sønderborg (capital Copenhagen shown for reference). Boundaries: Natural Earth.

Population (city proper)

27,766

Rank in Denmark

#35

Coordinates

54.91°N, 9.79°E

~15 m elevation · Europe/Copenhagen

Distance to capital (Copenhagen)

195 km

121 miles, straight line

Other big cities in South Denmark

City	Population	Rank in Denmark
Odense	180,863	#3
Esbjerg	71,698	#6
Kolding	61,638	#8
Vejle	60,231	#10
Fredericia	40,886	#22
Svendborg	27,300	#36
Haderslev	22,011	#42
Nyborg	17,525	#51

Cities near Sønderborg

Aabenraa16,401 people · ~28 km away
Haderslev22,011 people · ~42 km away
Svendborg27,300 people · ~55 km away
Tønder16,401 people · ~59 km away
Odense180,863 people · ~66 km away
Middelfart16,277 people · ~66 km away

FAQ

What is the population of Sønderborg?

Sønderborg has a population of 27,766 (city proper, latest official figure via GeoNames), making it the #35 biggest city in Denmark.

What region is Sønderborg in?

Sønderborg is located in South Denmark, Denmark.

Is Sønderborg the capital of Denmark?

No, the capital of Denmark is Copenhagen, about 195 km away.

Sources & notes

Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.

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