If you see a firecamp icon: where a Jason cabin is supposed to be, that means
the cabin DID NOT spawn there, so it should be in the other location for that map.

"Crystal Lake" is an exception to this, since no mark will appear on the map on either location.

Here is the most obvious one, Higgins haven island.
If there is a campsite near the cemetery (Marked in yellow) the cabin is surely is there:



















And the not so obvious one, south from the cemetery.
If you see a campsite on the island with your map (Marked in yellow) then the location of the cabin is here:

There is one possible location near the bottom of the map:






















And another one north and east:

There is one location on the west side, on what looks like the map's nose.
Again, pay attention to the camp sites marked in yellow so you don't have to guess which of the 2 locations you got




















The other one is a bit further east:

If there is a campsite located at Elmwood camp (Marked in yellow), the location will be on the north of the map by Hollow Groove.

There is a small very hidden passage which you use to reach the cabin, use the green arrows to know exactly where, its by a tree surrounded by small wood poles, where a broken wood fence is, there are 2 big rock formations that leave a very small passage and its the only way in.


















However if there is no campsite icon at Elmwood the cabin will be there, this one too has a small passage that you need to pay attention to access the cabin just by the middle of the small trail not really marked in the map (check the green arrows):

This first one spawns at the south-east corner of the map, if you don't see a campsite icon there, that is where Jason's cabin is:




















However if you do see a campsite icon in the first location (Marked in yellow) then the other possible location is on the north west corner of the map:

Small update regarding the small maps :D

Seems some of the maps have the same Jason cabin locations as the regular maps
All except for the next ones:


Higgings Haven. Since the small island in the lake is inaccessible I believe the location was changed from there to here:


















Packanack locations also got changed, both locations are different.

Here is the first one, I believe it appears if you DO NOT see the boat house at the north of the map (check the second map, its marked in yellow):


















However if you do see the boat house cabin up north (marked in yellow) the location will be here:




















Crystal Lake has one different location compared to the normal map.
It still has the south location at the bottom of the map, however the North location does not exist.

Instead it can also appear in the bottom right area of the map, and just like the regular size map there is no telling for sure which of the 2 locations its on:

















So far those are the only cabin location change I have noted in the small maps but I'll edit if any other is found, or commented on.

These are all of the current locations, I will try to update this list as we get new maps for the game, if a new map comes around it might take me a little while to update, but feel free to remind me commenting here.

So long and ... HE IS RIGHT BEHIND YOU!

D: