@Ziggurat When putting a settlement on a map that you don't expect the party to go anywhere near soon, you only really need three pieces of info (beyond its location, anyway):
Name
Size (city/town/village)
Product (apples, silk, sheep, etc.) or service (government, knowledge, trade hub, etc.)
Why a product or service? It helps establish how trade happens, gives the town a reputation for the group to hear, gives you a hook from which to improvise NPCs from there, and so on.