Okay , what is the division between well-off , and not so well-off , parts of Riverdale ?
  Jughead , Betty , and of course , our hero(?) , Archie , live in a solidly middle-class neighborhood .
  While Mr. Lodge , of course , is in a category of his own , I believe the Mantles might be in a " richer " vicinity as well .
  I've seen it suggested that Moose and Midge are in a TOUCH more " working-class " , say , nabe .
  And Dilton ? Given that he has a stand-apart shack ( Maybe it's supposed to be the Doiley's garage , but even so...) for his labratory , isn't he in a slightly less zoning-board affected area than the juusstttt ever-so respectable part where Archie is ?
  I think I've seen that Archie has done a map of Riverdale of sorts , on its site...I came up before comics publishers routinely put out maps/universe guides ( Yes ! We walked to school 30 miles , barefoot , in the snow...) , so...

A lot of people mistakenly think of Reggie as "rich," which he isn't. (I remember as a little kid being upset that "The New Archies" said his father had a limo. That's wrong.) As you say, he's below Veronica, but above Archie: his father owns the only newspaper in a small town, which used to be a pretty big status symbol, so he has more money and influence than the average kid without being in Veronica's social set.

Jughead's parents are whatever they need to be depending on the story, but there definitely are a bunch of stories where they're teetering on the brink of financial collapse, or Jughead's dad loses his job and Jughead needs to work to support them, etc. I think he usually comes off as being a little lower on the totem pole than others, which would explain why Veronica looks down on him more than even the other characters.

The Coopers are all over the place, depending on the story.

In some stories (most, probably), Betty has her own car (even a hybrid!).

In others, the family has two or even just one car. I remember one story calling "The Rivalry", where Betty was comparing herself and Veronica. She said she had to rely on either the family stationwagon or her own skateboard for transportation.

Also, her wardrobe consisted mostly of "empty hangers and not-so-empty moths".

That is way poorer than my family. My mom and I both work in retail, and we still have three cars, and I have a decent amount of clothes.

So Betty's family must be just scraping by, at least in that story. Definitely working class.