When we get the TOR suppliment for Rivendell, I hope that it identifies one or more northern settlements of the surviving Dúnedain. TheOneRing.net board member Felagund addressed this recently:

I can imagine that there were other settlements both north of Rivendell (between the Trollshaws and the Misty Moutains) and south of the Ford of Bruinen.

The North Downs and Fornost Erain (Deadman's Dike) seem to have been abandoned by all Men including the Dúnedain, although Gandalf tells Barliman Butterbur that Rangers still patrol the area.

Oh, I so want that supplement

Hi Otaku-sempai,
the very theme of your question has been addressed in much detail in the last Issue of Other Minds Magazine. You may download it (#13) here (as well as back Issues of Other Minds and Other Hands). You may find useful information and original material there.

Cheers
Tolwen

Thanx! That is indeed an extensive article that goes far beyond my simple question. There do seem to be very few communities of Rangers in the later Third Age, although the article places at least one of them a bit further North than I had actually imagined.