In the US, at least, people's thoughts on classes seem all over the map. Some people think of 'working class' or 'blue collar' as people without degrees but if

In the US, at least, people's thoughts on classes seem all over the map. Some people think of 'working class' or 'blue collar' as people without degrees but if a teacher makes less than a plumber than who is in what class. OTOH calling yourself 'rich' is going to sound braggy. Someone with a comfortable 6 figure income and a 2 million dollar house may sound like they are downgrading themselves by saying 'upper-class' but if they say 'rich' a lot people are going to think that 'rich' means private island in the Caribbean, not two weeks in Hawaii. It's best to just stay away from it.