Vietnam is approximately 331,210 sq km, while Jersey is approximately 116 sq km, making Jersey 0.04% the size of Vietnam. Meanwhile, the population of Vietnam is ~98.7 million people (98.6 million fewer people live in Jersey).
This to-scale map shows a size comparison of Vietnam compared to Jersey. For more details, see an in-depth quality of life comparison of Jersey vs. Vietnam using our country comparison tool.