San Bernardino is about 5 times smaller than Canberra.

Canberra is approximately 814 sq km, while San Bernardino (map shows its 50 named neighbourhoods; the area covers the whole city) is approximately 161 sq km, making San Bernardino 19.76% the size of Canberra.
Tip: This to-scale comparison of Canberra vs. San Bernardino uses the Mercator projection, which distorts the size of regions near the poles.
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