City size comparison

compared to

Vienna is around the same size as Oslo.

Oslo is approximately 454 sq km, while Vienna is approximately 415 sq km, making Vienna 91.34% the size of Oslo.
Tip: This to-scale comparison of Oslo vs. Vienna uses the Mercator projection, which distorts the size of regions near the poles.
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Compare further: Vienna vs. Oslo

Flip Comparison · See true size
See Vienna on top of Oslo
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Cost of Living Comparison · 7 categories - 2026 data
Oslo is 37.0% more expensive than Vienna
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