Koper Population 2026
Koper has a population of 25,753, making it the #5 biggest city in 🇸🇮 Slovenia, located in Urban Municipality of Koper. Roughly 1.2% of Slovenia's population lives here. It is about 11× smaller than Ljubljana, the country's biggest city.
Population (city proper)
25,753
Rank in Slovenia
#5
Coordinates
45.55°N, 13.73°E
~12 m elevation · Europe/Ljubljana
Distance to capital (Ljubljana)
82 km
51 miles, straight line
Cities near Koper
FAQ
What is the population of Koper?
Koper has a population of 25,753 (city proper, latest official figure via GeoNames), making it the #5 biggest city in Slovenia.
What region is Koper in?
Koper is located in Urban Municipality of Koper, Slovenia.
Is Koper the capital of Slovenia?
No, the capital of Slovenia is Ljubljana, about 82 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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