City size comparison

compared to

Rome is about 1.5 times bigger than San Diego.

San Diego is approximately 844 sq km, while Rome is approximately 1,287 sq km, making Rome 53% larger than San Diego.
Tip: This to-scale comparison of San Diego vs. Rome uses the Mercator projection, which distorts the size of regions near the poles.
Share

Compare further: Rome vs. San Diego

Flip Comparison · See true size
See Rome on top of San Diego
→
Cost of Living Comparison · 7 categories - 2026 data
San Diego is 70.9% more expensive than Rome
→
Our free app, MapSize by MyLifeElsewhere — compare any two places, to scale on your mobile device.
Download on the App Store GET IT ON Google Play