Fremont is about 6 times smaller than Rome.

Rome is approximately 1,287 sq km, while Fremont (map shows its 28 named neighbourhoods; the area covers the whole city) is approximately 202 sq km, making Fremont 15.71% the size of Rome.
Tip: This to-scale comparison of Rome vs. Fremont uses the Mercator projection, which distorts the size of regions near the poles.
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