Operations at the post office in Johnsonburg, New Jersey were suspended on March 17, presumably to 'lease concerns'. It is unknown whether this post office will re-open. I was fortunate enough to visit Johnsonburg in a quaint, rural part of northwest Jersey and obtain its postmark back in October:
Closest post office: Greendell, NJ. Distance: 3.8 [somewhat windy] miles.
Here is Greendell:
Also nearby: The lovely office of Tranquility, New Jersey; one of the most beautiful names I know for a town.