The maximum population, once all huts have been constructed, is approximately 90 villagers.

There are 3 buildings on the island when you begin the game (the long building, the "laundry hut" and the "breeding hut"). Your villagers can construct 3 additional huts, one of which is partially constructed when you begin the game. Each of those huts allows your population to grow to a predetermined limit, which roughly corresponds to the population that can be supported by each of the 3 sources of food available to the villagers.