As Visual Capitalist's Avery Koop details below, cities become "expensive" due to a variety of factors such as high demand for housing, a concentration of high-paying businesses and industries, and a high standard of living. Additionally, factors such as taxes, transportation costs, and availability of goods and services can also contribute to the overall cost of living in global cities.

The infographic above uses data from EIU to rank the world most and least expensive cities to live in. To make the list, the EIU examines 400+ prices for over 200 products and services in 172 cities, surveying a variety of businesses to track price fluctuations over the last year.

Inflation + Strong Currency = Expensive Cities

If you live in a city where many residents find it challenging to put a roof over their heads, food on their plates, and make ends meet, you live in an expensive city.

But if this inflation is compounded with a strong national currency, you may live in one of the world's most expensive cities.