Dublin
115 km²
Philadelphia
370 km²
City Map Compare/Dublin vs Philadelphiavs
vs
2 km
Ireland
United States
Area Comparison
Dublin is 3.2x smaller than Philadelphia
Population Comparison
Dublin has 2.7x fewer people than Philadelphia
Yes — Philadelphia is 3.2x larger than Dublin by area. Philadelphia spans 370 km² (143 mi²) while Dublin covers 115 km² (44 mi²) — a difference of 255 km². You could fit Dublin inside Philadelphia approximately 3 times.
To put Dublin's size in perspective, its area of 115 km² is roughly the same size as San Francisco. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
Picture Dublin another way: its area is large enough to fit about 16,000 American football fields, 57 times the area of Monaco, or 34 times the area of Central Park. Philadelphia, by comparison, equals about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Dublin is the capital and largest city of Ireland. Situated on Dublin Bay at the mouth of the River Liffey, it is in the province of Leinster, and is bordered on the south by the Dublin Mountains, part of the Wicklow Mountains range. Dublin is the largest city by population on the island of Ireland; at the 2022 census, the city council area had a population of 592,713, while the city, including suburbs, had a population of 1,263,219, and County Dublin had a population of 1,501,500.
Known as "The Fair City", Dublin covers 115 km² with a population of 0.6 million. The city was established in 841. Dublin is known for Trinity College, Guinness Storehouse, Temple Bar, among other attractions.
Dublin sits on Dublin Bay at the mouth of the River Liffey, bordered to the south by the Dublin Mountains.
Philadelphia, colloquially referred to as Philly, is the most populous city in the U.S. state of Pennsylvania, and the sixth-most populous city in the United States, with a Census-estimated population of 1,574,281 in July 2025. The Philadelphia metropolitan area has 6.33 million residents and is the nation's ninth-largest metropolitan area. Philadelphia is known for its culture, cuisine, and history, maintaining contemporary influence in business and technology, sports, and music.
Also known as "Philly", Philadelphia has an area of 370 km² and is home to 1.6 million people. Its history stretches back to 1682. Visitors come for Liberty Bell, Independence Hall, Philly Cheesesteak, and much more.
Philadelphia is the sixth-most populous US city, with an estimated 1,574,281 residents as of July 2025.
Dublin has a population density of 5,130 people per km² — a densely populated city. Philadelphia, with 4,324 people per km², is a moderately dense city. Both cities have comparable density, though Dublin is slightly more compact.
Size Ratio
Dublin fits inside Philadelphia ~3 times
History
Dublin is ~841 years older
Dublin covers 115 km². Cities with a similar urban footprint include Vancouver (115 km²), San Francisco (121 km²), Paris (105 km²), Barcelona (101 km²), or Doha (132 km²).
Philadelphia covers 370 km². Cities with a similar urban footprint include Seattle (369 km²), Dhaka (368 km²), Portland (376 km²), Atlanta (348 km²), or Denver (401 km²).
The straight-line distance from Dublin to Philadelphia is 5,244 km (3,259 miles), with an estimated flight time of ~6h 40m.
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