the median salary in US is $ 36k/year[1]
in China is $ 13.5k, but cost of living in China is more than 50% cheaper than in US on average and education is basically free
Kentucky has the same population of Switzerland but less than half average income (27k vs 62k)
14% of the population in USA relys on food stamps
OP said I would not say it is developed, just because the top percentile of the population seem to live lavish lives, does that apply to US as well? (or Italy, where I come from and similar patterns are observable)
there is more than the average and the median when 1.2 billion people live in the same country
development is not homogeneous anywhere
[1] The Bureau of Labor Statistics reported a median personal income of $865 weekly for all full-time workers in 2017. The U.S. Census Bureau lists the annual real median personal income at $35,977 in 2019 with a base year of 2019.
Well, large parts of the USA do feel like a developing countries. Some even have comparable life expectancies...
that's per household, not per capita.
So? The country itself can still be under-developed.