Border history · 1917–2023

Finland borders over time

CShapes records 1 change to the borders of Finland between 1917 and 2023. It was independent for the whole period. Its territory covers 335,248 km², less than the 388,757 km² it covered in 1917. The largest single change came on March 12, 1940, when it lost about 53,509 km².

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Border changes
1
Area today
335,248 km²
Largest change
−53,509 km² (1940)
Status
Independent
March 12, 1940 – presentChoose a period to see its borders. The dashed line is the period before.

Timeline of Finland's borders

Each period is one border version in CShapes, with its area and the change from the period before.

  1. December 6, 1917 – March 11, 1940

    388,757 km²First recorded versionIndependentWorld map in 1918

  2. March 12, 1940 – present

    335,248 km²−53,509 km²IndependentWorld map in 1940

What changed

Independence, transfers between rulers, and border changes recorded for this country.

  1. Finland becomes an independent state.
  2. Finland loses about 53,509 km² of territory.