Some thoughts:
CA: Berkeley
CO: Boulder
IL: Evanston
IA: Iowa City
KS: Lawrence
MD: Takoma Park
MA: Cambridge
MI: Ann Arbor
NJ: Princeton
NY: Williamsburg in Brooklyn
OR: Portland
TX: Austin
VT: Brattleboro
VA: Arlington
WA: Seattle
WI: Madison
How accurate is this? And what would it be for other states?
Williamsburg contains quite a lot of *extremely* Trump precincts in South Williamsburg (some over 90% Trump) so that won't the answer for New York. The answer for New York is probably something like the West Village in Manhattan or Prospect Heights in Brooklyn.
I think my vote would go to Bushwick.
How about Astoria?
Up there for sure. Speaking from experience as a left-wing NYC artist-type in my 20s, the neighborhoods where a huge concentration of people in my cohort currently tend to live are Washington Heights/Inwood, Astoria, and the stretch of Brooklyn from Bushwick/Ridgewood to Flatbush around the Bedford/Nostrand area. Most have been priced out of Williamsburg for several years, which is why I would argue against it, in addition to the Hasidic enclave swinging the neighborhood right.
