Portland
376 km²
San Francisco
121 km²
United States
USA
Area Comparison
Portland is 3.1x larger than San Francisco
Population Comparison
Portland has 1.3x fewer people than San Francisco
Portland is significantly larger, covering 3.1 times the area of San Francisco. Portland spans 376 km² (145 mi²) while San Francisco covers 121 km² (47 mi²) — a difference of 255 km². You could fit San Francisco inside Portland approximately 3 times.
To put Portland's size in perspective, its area of 376 km² is about 1.6x smaller than Seoul. Meanwhile, San Francisco at 121 km² is about 1.2x the size of Paris (city proper).
Portland's footprint is roughly about 53,000 American football fields, 190 times the area of Monaco, or 110 times the area of Central Park — pick whichever unit feels intuitive. For San Francisco, that's about 17,000 American football fields, 60 times the area of Monaco, or 35 times the area of Central Park.
Portland is the most populous city in the U.S. state of Oregon. Located in the Pacific Northwest at the confluence of the Willamette and Columbia rivers, it is the 28th-most populous city in the United States, sixth-most populous on the West Coast, and fourth-most populous in the Pacific Northwest, with a population of 652,503 at the 2020 census. The Portland metropolitan area, with over 2.54 million residents, is the 26th-largest metropolitan area in the nation.
Known as "Rose City", Portland covers 376 km² with a population of 0.7 million. Portland is known for Powell's City of Books, Voodoo Doughnut, Washington Park, among other attractions.
Portland sits at the confluence of the Willamette and Columbia rivers in the Pacific Northwest.
San Francisco, officially the City and County of San Francisco, is the fourth-most populous city in California and the 17th-most populous in the United States, with a population of 826,079 in 2025. Among U.S. cities with a population of 300,000 or more, San Francisco is ranked first by per capita income, second by population density, and sixth by aggregate income as of 2023.
Nicknamed "The City by the Bay", San Francisco has an area of 121 km² and is home to 0.9 million people. Its history stretches 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 ranks first by per capita income among all US cities with 300,000+ residents as of 2023.
Portland has a population density of 1,729 people per km² — a relatively spread-out city. San Francisco, with 7,190 people per km², is a densely populated city. San Francisco is dramatically more crowded, with 4.2x the population density.
Size Ratio
San Francisco fits inside Portland ~3 times
Density Gap
San Francisco is 4.2x more densely populated
Portland covers 376 km². Cities with a similar urban footprint include Philadelphia (370 km²), Seattle (369 km²), Dhaka (368 km²), Denver (401 km²), or Atlanta (348 km²).
San Francisco covers 121 km². Cities with a similar urban footprint include Vancouver (115 km²), Paris (105 km²), Miami (143 km²), Barcelona (101 km²), or Lisbon (100 km²).
The straight-line distance from Portland to San Francisco is 861 km (535 miles), with an estimated flight time of ~1h 31m.
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