The parking spots all around PATH stations are specifically designed to deter folks from parking there and commuting to NYC. It's the only way Jersey City residents can have parking. So if you're trying to do exactly that, expect to have every problem possible.

You need to take transit to the PATH --- or park in an official spot, like the garage at JSQ --- or the West Side park&ride lot for the HBLR.

There used to be a whole bunch of small surface lots around JSQ, but in the last year or two many of those have become construction sites. Here are some good current options:
+ parking deck @ the PATH station, run by LAZ. Entrance is at the intersection of Summit Ave & Magnolia Ave.
https://www.lazparking.com/local/jersey-city-nj/journal-square---path-garage

+ 2 Journal Square Plaza aka 2940 Kenndy Blvd, just northwest of the PATH station. Enter from Kenndy Blvd southbound
https://en.parkopedia.com/parking/garage/2_journal_square_plaza_garage/07306/jersey_city/?arriving=202211281730&leaving=202211281930

+ State Square garage. Enter from Kennedy Blvd or Sip Ave
https://lots.impark.com/imp?utm_source=google&utm_medium=maps&utm_content=0730014&utm_campaign=local_us#details=73,14

+ Square Ramp, behind the Loews Theater… enter via Magnolia Ave / Tonnelle Ave
https://squareramp.com/

I’ve used 2 Journal Square Plaza Garage which is right in front of the Path without issues. You can use SpotHero to reserve/pay beforehand or search for other lots nearby.

There are a few parking lots around JSQ. I believe there is one right next to JSQ. Another option would be downtown JC.

There's a garage on Summit and Magnolia

On our back streets on our blocks we have parking Permit Dont try