Were there any towns/cities/townships that swung heavily against Trump, but are NOT super-wealthy? I would bet Darien and elsewhere in Fairfield County, CT would be among the biggest Dem swings among towns in states which such data.
This is a pretty interesting question and definitely an area worth exploring in further detail from our fellow Atlasians....
I sure there are likely quite a few places across the country....
I would imagine they would be more likely to be concentrated around Metro areas in the Northeast/West Coast, where Trump was not especially popular, many working and Middle Class communities with larger numbers of Latino and Asian-Americans, some college towns scattered around.
I looked up other towns in New England with strong Dem swings. The Conn. towns in the list below are well-off, not sure about the other ones.
Fairfield County, Connecticut
Greenwich
Darien
New Canaan
Wilton
Weston
Westport
Southborough, Worcester County, MA
Wenham, Essex County, MA
Manchester-by-the-Sea, Essex County, MA
Weston, Middlesex County, MA
Norfolk County, Mass.
Wellesley
Dover
Medfield
Cohasset
Hingham, Plymouth County, Mass.
New Castle, Rockingham County, NH
Frey Island, Cumberland County, Maine
The Massachusetts ones are all very wealthy towns, you're spot on. Same with Newcastle, NH. Although in MA I'd also add Boxford, Andover, and Lynnfield (Essex) and Scituate, Norwell, and Duxbury (Plymouth)