Davis is about 4.1 times smaller than Paris.

Paris is approximately 105 sq km, while Davis (map shows its 53 named neighbourhoods; the area covers the whole city) is approximately 26 sq km, making Davis 24.5% the size of Paris.
Tip: This to-scale comparison of Paris vs. Davis uses the Mercator projection, which distorts the size of regions near the poles.
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.