I think one's interpretation of "poor" rests primarily on location. This is for two reasons. First, location determines absolute cost of living, and can effect

I think one's interpretation of "poor" rests primarily on location. This is for two reasons. First, location determines absolute cost of living, and can effect quality of life. 40k might be above the median, but it barely livable in Manhattan. Location also has a bearing on relative perception of wealth. Someone making 40k in a neighborhood populated with people making 100k will make one feel poor. Ultimately, the word "poor" is too subjective and is interpreted too idiosyncratically, and I try to avoid using it (along with words like "smart" and "good", etc.)