Plainfield is a village in Waushara County, Wisconsin, United States.

Elijah C. Waterman laid out the village in 1849, building mills and attracting new settlers by offering free lots.

Waterman later became the village's first postmaster and changed the name to honor his hometown of Plainfield, Vermont.

[7] According to the United States Census Bureau, the village has a total area of 1.61 square miles (4.17 km2), all of it land.

There were 371 housing units at an average density of 230.4 per square mile (89.0/km2).

There were 373 housing units at an average density of 287.5 per square mile (110.8/km2).

Parts of the Werner Herzog film Stroszek were shot nearby.