List of countries by GDP (PPP) per capita - Wikipedia, the free encyclopedia

Here's some bar-bet trivia: What is the greatest gap in per capita GDP (adjusted for purchasing power) between neighboring countries?

I never would have figured this out on my own in a million years. One of the richest countries in the world has a border with one of the poorest - Equitorial Guinea (rich) and Cameroon (poor).

Excluding Africa? You'll never guess this one either. It is the gap between Luxembourg and France!

Excluding those real oddball cases, narrowing the debate to genuinely poor and genuinely rich countries, the serious answers are as follows:

• Norway and Russia have a border. The absolute difference in per capita GDP is $35,700. The United States and Mexico are at $32,600.
  
• Considering proportionate wealth rather than absolute dollars, the obvious answer is North and South Korea. South Korea is 13x higher!