Dublin
115 km²
San Francisco
121 km²
City Map Compare/Dublin vs San Franciscovs
vs
2 km
Ireland
United States
Area Comparison
Dublin is 1.1x smaller than San Francisco
Population Comparison
Dublin has 1.5x fewer people than San Francisco
In terms of area, San Francisco is 1.1x the size of Dublin. San Francisco spans 121 km² (47 mi²) while Dublin covers 115 km² (44 mi²) — a difference of 6 km².
To put Dublin's size in perspective, its area of 115 km² is roughly the same size as San Francisco. Meanwhile, San Francisco at 121 km² is about 1.2x the size of Paris (city proper).
In more relatable units, Dublin's 115 km² is about 16,000 American football fields, 57 times the area of Monaco, or 34 times the area of Central Park. 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.
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.
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.
Often called "The City by the Bay", 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 ranks first by per capita income among all US cities with 300,000+ residents as of 2023.
Dublin has a population density of 5,130 people per km² — a densely populated city. San Francisco, with 7,190 people per km², is a densely populated city. Both cities have comparable density, though San Francisco is slightly more compact.
Density Gap
San Francisco is 1.4x more densely populated
History
Dublin is ~935 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).
San Francisco covers 121 km². Cities with a similar urban footprint include Vancouver (115 km²), Dublin (115 km²), Doha (132 km²), Paris (105 km²), or Miami (143 km²).
The straight-line distance from Dublin to San Francisco is 8,177 km (5,081 miles), with an estimated flight time of ~10h 7m.
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