Minecraft wiki entry for Surviving_in_a_single_area_indefinitely, associated text: With 1.14, iron golem spawning has been changed. Now villagers will attempt to spawn a new iron golem if a mob is hostile towards villagers such as a zombie approaches. In Bedrock Edition, iron golems will spawn in villages with at least 20 beds and 10 villagers, and where at least 75% of the population has worked recently.