Chula Vista is around the same size as San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Chula Vista (map shows its 22 named neighbourhoods; the area covers the whole city) is approximately 129 sq km, making Chula Vista 6% larger than San Francisco.
Tip: This to-scale comparison of San Francisco vs. Chula Vista uses the Mercator projection, which distorts the size of regions near the poles.
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