Auckland
559 km²
Philadelphia
370 km²
New Zealand
United States
Area Comparison
Auckland is 1.5x larger than Philadelphia
Population Comparison
Auckland has 1.1x fewer people than Philadelphia
In terms of area, Auckland is 1.5x the size of Philadelphia. Auckland spans 559 km² (216 mi²) while Philadelphia covers 370 km² (143 mi²) — a difference of 189 km².
To put Auckland's size in perspective, its area of 559 km² is roughly the same size as Seoul. Meanwhile, Philadelphia at 370 km² is about 1.6x smaller than Seoul.
Picture Auckland another way: its area is large enough to fit about 78,000 American football fields, 160 times the area of Central Park, or 9 times the area of Manhattan. For Philadelphia, that's about 52,000 American football fields, 180 times the area of Monaco, or 110 times the area of Central Park.
Auckland is a large metropolitan city in the North Island of New Zealand. It has an urban population of about 1,547,200. It is located in the greater Auckland Region, the area governed by Auckland Council, which includes outlying rural areas and the islands of the Hauraki Gulf, and which has a total population of 1,816,000 as of June 2025. It is the most populous city of New Zealand and the fifth-most populous city in Oceania.
Known as "City of Sails", Auckland covers 559 km² with a population of 1.5 million. The city was established in 1840. Auckland is known for Sky Tower, Hauraki Gulf islands, Auckland Harbour Bridge, among other attractions.
Auckland is the most populous city in New Zealand and the fifth-most populous city in all of Oceania.
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.
Often called "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.
Auckland has a population density of 2,630 people per km² — a moderately dense city. Philadelphia, with 4,324 people per km², is a moderately dense city. Philadelphia is noticeably denser, packing 1.6 times more people per square kilometer.
Density Gap
Philadelphia is 1.6x more densely populated
History
Philadelphia is ~158 years older
Auckland covers 559 km². Cities with a similar urban footprint include Budapest (525 km²), Mumbai (603 km²), Madrid (604 km²), Warsaw (517 km²), or Seoul (605 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 Auckland to Philadelphia is 14,073 km (8,744 miles), with an estimated flight time of ~17h 3m.
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