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Kenya
Austria
Area Comparison
Nairobi is 1.7x larger than Vienna
Population Comparison
Nairobi has 2.4x more people than Vienna
In terms of area, Nairobi is 1.7x the size of Vienna. Nairobi spans 696 km² (269 mi²) while Vienna covers 415 km² (160 mi²) — a difference of 281 km².
To put Nairobi's size in perspective, its area of 696 km² is about 1.1x smaller than New York City. Meanwhile, Vienna at 415 km² is about 1.5x smaller than Seoul.
Kenya's capital and East Africa's largest city. Known as "The Green City in the Sun", Nairobi covers 696 km² with a population of 4.7 million. The city was established in 1899. Nairobi is known for Nairobi National Park, Safari tourism, Karen Blixen Museum, among other attractions. The city's main transit system is the Nairobi Commuter Rail.
Nairobi is the only capital city in the world with a national park within its borders — you can see lions with skyscrapers in the background
Austria's capital and a center of classical music. Often called "City of Music", Vienna has an area of 415 km² and is home to 2.0 million people. The city dates back to 500 BC. Visitors come for Schönbrunn Palace, Vienna State Opera, Sachertorte, and much more. Getting around is easy with the Wiener Linien (U-Bahn).
Vienna has been ranked the world's most liveable city multiple times by the Economist Intelligence Unit
Looking beyond city limits, the Vienna metropolitan area covers 3,840 km², which is 5.5x larger than greater Nairobi at 696 km². The Nairobi metro area is also more populous, with 4.7 million people compared to 2.8 million.
Nairobi has a population density of 6,796 people per km² — a densely populated city. Vienna, with 4,771 people per km², is a moderately dense city. Both cities have comparable density, though Nairobi is slightly more compact.
This comparison spans continents — Nairobi in Africa versus Vienna in Europe. Despite the geographic distance, comparing their sizes reveals surprising insights about how cities grow worldwide.
Nairobi has a subtropical highland climate while Vienna experiences oceanic conditions. Winters differ dramatically: Nairobi stays around 17°C while Vienna drops to 1°C. When it's noon in Nairobi, it's 10:00 AM in Vienna — a 2-hour time difference.
Density Gap
Nairobi is 1.4x more densely populated
History
Vienna is ~2,399 years older
The straight-line distance from Nairobi to Vienna is 5,848 km (3,634 miles), with an estimated flight time of ~7h 23m. See full distance details, including timezone difference and city facts.
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