Boston vs Nairobi - City Size Comparison

Is Boston Bigger Than Nairobi?

Yes — Nairobi is 3.0x larger than Boston by area. Nairobi spans 696 km² (269 mi²) while Boston covers 232 km² (90 mi²) — a difference of 464 km². You could fit Boston inside Nairobi approximately 3 times.

About Boston

A historic city and academic center in the northeastern US. Known as "Beantown", Boston covers 232 km² with a population of 0.7 million. The city was established in 1630. Boston is known for Harvard & MIT, Freedom Trail, Fenway Park, among other attractions. The city's main transit system is the MBTA (The T).

Boston's subway system (the T) opened in 1897, making it the oldest subway in North America

About Nairobi

Kenya's capital and East Africa's largest city. Nicknamed "The Green City in the Sun", Nairobi has an area of 696 km² and is home to 4.7 million people. The city dates back to 1899. Visitors come for Nairobi National Park, Safari tourism, Karen Blixen Museum, and much more. Getting around is easy with 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

Metropolitan Area Comparison

Looking beyond city limits, the Boston metropolitan area covers 11,700 km², which is 16.8x larger than greater Nairobi at 696 km². The Boston metro area is also more populous, with 4.9 million people compared to 4.7 million.

Population Density

Boston has a population density of 2,931 people per km² — a moderately dense city. Nairobi, with 6,796 people per km², is a densely populated city. Nairobi is noticeably denser, packing 2.3 times more people per square kilometer.

Climate & Time Zone

Boston has a humid continental climate while Nairobi experiences subtropical highland conditions. Winters differ dramatically: Nairobi stays around 17°C while Boston drops to -1°C. When it's noon in Nairobi, it's 4:00 AM in Boston — a 8-hour time difference.