Barcelona vs San Francisco - City Size Comparison

Is Barcelona Bigger Than San Francisco?

In terms of area, San Francisco is 1.2x the size of Barcelona. San Francisco spans 121 km² (47 mi²) while Barcelona covers 101 km² (39 mi²) — a difference of 20 km².

About Barcelona

A Mediterranean city known for Gaudi's architecture. Known as "The City of Counts", Barcelona covers 101 km² with a population of 1.7 million. The city was founded around 230 BC. Barcelona is known for Sagrada Família, Park Güell, La Rambla, among other attractions. The city's main transit system is the Barcelona Metro (TMB).

Gaudí's Sagrada Família has been under construction since 1882 and is expected to be completed around 2026

About San Francisco

A cultural and financial center in Northern California. Also known as "SF", San Francisco has an area of 121 km² and is home to 0.9 million people. The city dates back to 1776. Visitors come for Golden Gate Bridge, Alcatraz Island, Cable cars, and much more. Getting around is easy with the BART & Muni.

San Francisco's 121 km² makes it one of the smallest major US cities by area

Metropolitan Area Comparison

Looking beyond city limits, the San Francisco metropolitan area covers 6,984 km², which is 8.7x larger than greater Barcelona at 803 km². The Barcelona metro area is also more populous, with 5.6 million people compared to 4.7 million.

Population Density

Barcelona has a population density of 16,436 people per km² — an extremely dense urban environment. San Francisco, with 7,190 people per km², is a densely populated city. Barcelona is noticeably denser, packing 2.3 times more people per square kilometer.

Climate & Time Zone

Both cities share a Mediterranean climate, though local geography creates distinct microclimates in each. When it's noon in Barcelona, it's 3:00 AM in San Francisco — a 9-hour time difference.