Pennsylvania
Philadelphia. (Pennsylvania is a state, not a city)
Only New York and Pennsylvania have a city named Johnstown.
Erie
Nop, only a borough in Pennsylvania
There is only one city named St. Petersburg in the US, and it's located in Florida. There is also a borough in Pennsylvania named St. Petersburg.
No
New York, Ohio, Illinois, Michigan, and Pennsylvania all have cities named Brooklyn.
Hershey's chocolate World is located in the state of Pennsylvania. Actually, it is in Hershey's, Pennsylvania to be exact.
Four: Maryland North Carolina Pennsylvania Texas
charlston chew
I am told there are four cities in the US named Chicken or have the word 'chicken' in the name. They are in Alaska, Illinois, Kentucky & Pennsylvania.