Talk:Immigrants/@comment-3225604-20140313151541/@comment-5157002-20140315130741

There's actually four upgrades: Town Government, County Government, Prefecture Government, and Provincial Government.

All are available at the Village, cost 200 wood, and increase Village hit points by 10% (cumulative) and population by 5 - a fully upgraded village has 3750 hp (from 2500) and provides 40 population.

I'm going to add this info to the Village page, in case someone else missed this.