Corpus Christi is about 3 times smaller than Rome.

Rome is approximately 1,287 sq km, while Corpus Christi (map shows its 7 named neighbourhoods; the area covers the whole city) is approximately 431 sq km, making Corpus Christi 33.48% the size of Rome.
Tip: This to-scale comparison of Rome vs. Corpus Christi uses the Mercator projection, which distorts the size of regions near the poles.
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