Thailand is approximately 513,120 sq km, while Jersey is approximately 116 sq km, making Jersey 0.02% the size of Thailand. Meanwhile, the population of Thailand is ~69.0 million people (68.9 million fewer people live in Jersey).
This to-scale map shows a size comparison of Thailand compared to Jersey. For more details, see an in-depth quality of life comparison of Jersey vs. Thailand using our country comparison tool.