An Avalon Spouter is "pretty sure" that the UK per-capita income is lower than Mississippi's per-capita income. Let's hope that the Spouter is kidding, because if he or she isn't they are broadcasting their ignorance. The per-capita of Mississippi in 2023 was $30,529. According to the World Bank, the UK's 2023 per-capita was $49,964. The UK has a highly developed social market economy and is a high-income country with a very high "human development" level.