It´s slightly off-topic but the US is about to give 1,200$ to anyone who earns less than 75.000$ a year. Is 75k a low income in Ameria? I always wondered why Americans complain about seemingly high amounts of money. In many countries 6.250$ per month would be considered a ton of money (even after taxes).
I have not read the final bill yet to know if that is the number settled upon, and what goes for families and people with kids.
Anyway assuming that is the case
America/the US varies massively.
Go to some of the big cities (New York, LA, Seattle, San Francisco, possibly Portland, these days the bigger cities in Texas, if you have heard of a tech company being based there...) and you will struggle to live on 75K anywhere near the city, a bit further out can be better but you will have to commute.
Go to some of the smaller and rural states and 75K will see you live like a king, and I doubt many people there even meet someone that earns that much, save perhaps their doctor.
But yeah it is a lot of money in most places. Sort of thing you either need to run a successful business for or have a decent degree to get, some people might get there as a manager in a shop but even those people expect to have degrees these days.
https://www.cnbc.com/2017/08/24/how-much-americans-earn-at-every-age.html
You can run the cost of living equation for you if you want
Rent
https://www.apartmentlist.com/rentonomics/national-rent-data/
Food varies a lot depending upon how much you eat in restaurants, how much you cook and what you cook. Sometimes it is cheap but I do find it hard when there to eat healthily for cheap using readily available ingredients (worldwide food production means most things I have in the UK I can find in the US if I wanted, however I am usually going for what is there locally) and I can/do cook.
In most of the US you will need a car, though some of the cities don't, so add that as well.
Another link that might help bias costs when it comes to cities.
https://www.expatistan.com/cost-of-living/index/north-america
You will probably also want to add health insurance into this (there is some free healthcare but you won't get far without insurance). Depending upon your age, lifestyle and previous conditions that can get quite expensive.
All that said I meet just as many that would go bankrupt if they stopped earning for a few months -- for whatever reason a lot of people there live right at their means or just beyond it, use ridiculous amounts of credit, and don't have much in the way of savings, or a rainy day fund. To that end I can well imagine many earning say $70K a year being immensely relieved at this.