Since Sweden is held up as a sort of promised land by American socialists, let's compare it first. We find that, if it were to join the US as a state, Sweden would be poorer than all but 12 states, with a median income of $27,167.No surprises here, though: there's significant entropy involved in taxing and spending. If you make $10,000 and I make $110,000, our average income is $60,000. If the government takes $50,000 from me to distribute to you, it's going to have to pay taxmen and bureaucrats to administer the program. You'll probably only get $25,000 of the money, the rest being lost to the systematic entropy. Our average income will now only be $47,500.
Median residents in states like Colorado ($35,830), Massachusetts ($37,626), Virginia ($39,291), Washington ($36,343), and Utah ($36,036) have considerably higher incomes than Sweden.
With the exception of Luxembourg ($38,502), Norway ($35,528), and Switzerland ($35,083), all countries shown would fail to rank as high-income states were they to become part of the United States. In fact, most would fare worse than Mississippi, the poorest state.
For example, Mississippi has a higher median income ($23,017) than 18 countries measured here. The Czech Republic, Estonia, Greece, Hungary, Ireland, Italy, Japan, Korea, Poland, Portugal, Slovenia, Spain, and the United Kingdom all have median income levels below $23,000 and are thus below every single US state. Not surprisingly, the poorest OECD members (Chile, Mexico, and Turkey) have median incomes far below Mississippi.
Germany, Europe's economic powerhouse, has a median income ($25,528) level below all but 9 US states. Finland ranks with Germany in this regard ($25,730), and France's median income ($24,233) is lower than both Germany and Finland. Denmark fares better and has a median income ($27,304) below all but 13 US states.
That's what these societies are striving for -- a more level field of incomes. That doesn't come without a cost.