City size comparison

compared to

Boise is about 1.8 times bigger than San Francisco.

San Francisco (including the city proper only) is approximately 121 sq km, while Boise is approximately 221 sq km, making Boise 82% larger than San Francisco.
Tip: This to-scale comparison of San Francisco vs. Boise uses the Mercator projection, which distorts the size of regions near the poles.
Share

Compare further: Boise vs. San Francisco

Flip Comparison · See true size
See Boise on top of San Francisco
→
Cost of Living Comparison · 7 categories - 2026 data
San Francisco is 58.3% more expensive than Boise
→
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