Okay so I decided to generate a random zip code in the US and rate the transit in it, I got 07042 which is in Montclair, NJ.
The zip code covers the southern half of Montclair and much of the historic center of the town. It is home to 3 stops on the Montclair-Boonton Line which connects the city to New York, Hoboken and Boonton. It additionally has several bus lines in the city and out to other parts of New Jersey
There is decent density and walkability around the Bay and Walnut street stops but the Watchung Avenue stop is in a rather suburban area.
Overall with 3 stops in a roughly 3k acres, it has rather good walkability and transit access, as well as an art museum, I would give Montclair a solid 7/10
Zip code was generated here
Okay so I rolled again and got 19082 Upper Darby PA and I think I hit the transit jackpot, it contains the 101 and 102 trolleys, the end point of the Market-Frankford Line, and the Norristown High-speed Line, giving you easy access to Norristown and Philadelphia as well as other suburbs on the west side like Bryn Mawr, Sharon Hill or Drexel Manor. Additionally it is an urban area and has a transit accessible Hmart, 9.5/10
