Population of Koper, Slovenia as of January 2026. How many people live in Koper today?

The exact population of Koper as of January 2026 is estimated at 26,305 residents. Please note: this figure is an estimate and may slightly change as people get born and pass away, it also depends on migration to/from Koper.

Check out more data on population in Slovenia:

• Vrhnika
• Postojna
• Logatec
• Murska Sobota
• Izola
• Škofja Loka
• Nova Gorica