San Francisco is around the same size as Long Beach.

Long Beach is approximately 131 sq km, while San Francisco (including the city proper only) is approximately 121 sq km, making San Francisco 92.2% the size of Long Beach.
Tip: This to-scale comparison of Long Beach vs. San Francisco 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.