Portland
376 km²
San Diego
964 km²
United States
United States
Area Comparison
Portland is 2.6x smaller than San Diego
Population Comparison
Portland has 2.1x fewer people than San Diego
Yes — San Diego is 2.6x larger than Portland by area. San Diego spans 964 km² (372 mi²) while Portland covers 376 km² (145 mi²) — a difference of 588 km². You could fit Portland inside San Diego approximately 2 times.
To put Portland's size in perspective, its area of 376 km² is about 1.6x smaller than Seoul. Meanwhile, San Diego at 964 km² is roughly the same size as Berlin.
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. San Diego works out to about 135,000 American football fields, 16 times the area of Manhattan, or 9 times the area of Paris.
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 Diego is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. It is the eighth-most populous city in the U.S. and second-most populous city in California with a population of over 1.4 million, while the San Diego metropolitan area with over 3.3 million residents is the 18th-largest metropolitan area in the country. San Diego is the county seat of San Diego County.
Also known as "America's Finest City", San Diego has an area of 964 km² and is home to 1.4 million people. The city dates back to 1769. Visitors come for San Diego Zoo, Balboa Park, Coronado Beach, and much more.
San Diego sits directly on the Mexico-United States border, making it California's southwesternmost major city.
Portland has a population density of 1,729 people per km² — a relatively spread-out city. San Diego, with 1,442 people per km², is a relatively spread-out city. Both cities have comparable density, though Portland is slightly more compact.
Size Ratio
Portland fits inside San Diego ~2 times
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 Diego covers 964 km². Cities with a similar urban footprint include Abu Dhabi (972 km²), Dallas (997 km²), Berlin (892 km²), Santiago (838 km²), or Hong Kong (1,114 km²).
The straight-line distance from Portland to San Diego is 1,500 km (932 miles), with an estimated flight time of ~2h 16m.
Want to explore more? Compare city sizes for any two cities worldwide, or share your location live with friends.