So I used the numbers for a full-time employee, and I believe they are both correct. [1] if you prefer a government source, £611 × 52 = around $43k (increase presumably due to this being 4 years later).
Your British number is for all households, including those where one or both adults doesn't work. However, they are comparable.
On urbanism, you've completely missed my point. Americans are forbidden from living like Europeans by their state and local governments [2], and I consider this completely unreasonable.
[1] https://www.ons.gov.uk/employmentandlabourmarket/peopleinwor...
It is not illegal to build in a European style in most of the country; we have entire areas built in a similar style. Zoning is also not a fixed thing in the US; it is very common for zoning rules to change as the area grows. Most of the country is not the San Francisco Bay Area. Contrary to popular online belief, only 19% of Americans want to live in dense cities, so our cities actually mostly match people's preferences. Zoning and land use rules make it illegal to build American style cities in much of Europe as well, so far all you know, most Europeans would like American-style living they were allowed to have it. Here's a ridiculous example of some of your continent's NIMBYs not allowing a rural landowner to open a small restaurant [1]; the same sort of people are also opposed to building any form of suburban housing.
The typical American does not see *any* benefit to giving up their car and house. Every single benefit like < 10 minute travel time is already a reality (because what matters is how long it takes to run an errand, not how it is run), but they'd have to live in a smaller house. They are a short drive already from all the activities they could ever want and are friends with all of their neighbors. Their kids can play in the street safely as there might be a dozen cars a day traveling down their street, most of which belong to people who live there. There is no need to though, because everyone has a yard to play in. You admitted that most of your friends could not set up a shop if they wanted to, and the ones who do have them live on the outskirts of the city and have to add 20 minutes to every trip (unless they drive). For the typical middle class American, increasing density offers *no* benefit as literally everything you describe is either something they already have or something irrelevant, but it has significant downsides.
If all you talk to are internet urbanists and tech people living in the Bay Area, you are *not* getting an accurate picture of how the average American lives. This is why urban activists (and Europeans who have pride for their hometowns) are constantly bewildered as to why anyone resists them and think it's because people just don't understand the benefits or are brainwashed by car companies, not that they've heard your arguments before or visited your ideal areas and decided that they just don't want to live in an area like that. Urban activist types tend not to be the type of person who would have a home shop in the first place or have any hobbies that require space and they have fewer (if any) children. They are a vocal minority in the US: only 19% of Americans want to live in a dense urban area [4].
[1] https://www.ons.gov.uk/peoplepopulationandcommunity/personal...
[2] https://en.wikipedia.org/wiki/Median_income#Median_equivalen...
[3] https://www.investopedia.com/how-much-does-health-insurance-...
[4] https://www.pewresearch.org/social-trends/2021/12/16/america...