Berwick is an unincorporated community in Polk County, Iowa, United States, on the east bank of Fourmile Creek.

[3] In the early 20th century, Berwick and Norwoodville, a mile southwest, were home to several coal mines.

1) was 215 feet (66 m) deep, accessing a 4-foot-thick (1.2 m) coal seam.

The Delaware Coal Company had a shaft a mile northwest of Berwick, with a shaft 170 feet (52 m) deep.

[5] In 1912, United Mine Workers Local 318 in Berwick had 220 members, and Local 845 in Norwoodville, one mile south, had 129 members.