There are rowhouses in New England, but, yeah, they're uncommon. Once you get past Westchester County, rowhouses are relatively rare. And when you see rowhouses, they're almost always interspersed with other housing typologies. Even the Bronx never built rowhouses like you see in Brooklyn or NJ or PA.
Here's a typical New England rowhouse neighborhood in Bridgeport, CT:
https://www.google.com/maps/place/Ha...855294!6m1!1e1
The Hudson River Valley is somewhat of an exception, though. There are plenty of rows in the river towns between NYC and Albany.