Except cities aren't really fungible. If you like big cities, then NYC may be the best place to live regardless of salary. If you like the outdoors, then maybe another city. If you are raising a family, then maybe you want to be in a quieter area with good schools. If you want to be in a tech hub, then you should be in Silicon Valley. And if you have a spouse, that is all adjusted by their needs and the industry they work in.
On a software developer's salary, you'll get by regardless of what city you live in, so you should be choosing the city which suits your personality and your stage of life.
On a software developer's salary, you'll get by regardless of what city you live in, so you should be choosing the city which suits your personality and your stage of life.