Terraria NPCs list and moving in requirements

This Terraria NPCs guide details how many NPCs are in Terraria, and how to unlock them.

Every Terraria npc with how to get them and what they sell : r

tModLoader - NPCs won't move in what-so-ever

Anyone know why my Guide wont move in? : r/Terraria

Terraria - How to get ALL NPCS on Terraria!

All NPCs Guide - Terraria 1.4

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How to get all NPCs in Terraria! (NPC Guide, Full List & Move-In

tModLoader - NPCs won't move in what-so-ever

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Can my Terraria building be above ground for NPCs to come? - Arqade