Out of curiosity, I decided to see what the SCAG has to say about halflings, because specific beats general
Although there are many halfling communities, particularly in the lands in and around Luiren, halflings frequently fit themselves into dwarven, gnomish, elven, and human societies. Lightfoots breeze into communities as they travel, make friends easily, and then move on as the wind or whimsy takes them. Stronghearts settle in, make themselves at home, and weave themselves so deftly into the fabric of a community that it becomes hard for folk to think of a time without them.
------------------------
For lightfoot halflings, neither the journey nor the destination matters more; the important thing is to keep moving. The life of a lightfoot is one long exploration with each new horizon, new town, or new face a chance to find something delightful.
Lightfoot halflings typically travel in small bands, using whatever conveyance is convenient but just as easily striking out on foot. Bands consist of loosely related individuals, and when bands meet, membership frequently shifts. Lightfoot halflings typically excel at tasks related to travel — be it navigation, handling pack animals, foraging, sailing, and cartwright work — having tried their hand at all such things before or learned from other lightfoots met during their journeys.
-----------------
When strongheart halflings settle into a place, they intend to stay. It’s not unusual for a dynasty of stronghearts to live in the same place for a few centuries. Strongheart halflings don’t develop these homes in seclusion. On the contrary, they do their best to fit into the local community and become an essential part of it. Their viewpoint stresses cooperation above all other traits, and the ability to work well with others is the most valued behavior in their lands.
-------------
So Lightfoots are always on the move, and Stronghearts do their best to integrate with the locals. That seems to conflict with the isolated shires that a lot of people are pushing in this thread.