Bellevue is fairly working class though.
Granted, but its still that dreaded suburb Bandit & BRTD hate so much.
Dictionary.com says...
sub·urb /ˈsʌbɜrb/ Pronunciation Key - Show Spelled Pronunciation[suhb-urb] Pronunciation Key - Show IPA Pronunciation
–noun 1. a district lying immediately outside a city or town, esp. a smaller residential community.
2. the suburbs, the area composed of such districts.
3. an outlying part.
Basically, if you are in a city's metropolitian area but not in the city itself, then by definition that's the suburbs.
So rather than changing the definiton of the word to fit one's preconceived notion of what a suburb is (regardless of how accurate that notion may be in most cases), it would be more logical to acknowledge that not all suburbs are the same.