Berlin, WI -- U.S. city in Wisconsin Population (2000): 5305 Housing Units (2000): 2391 Land area (2000): 5.977900 sq. miles (15.482688 sq. km) Water area (2000): 0.327319 sq. miles (0.847751 sq. km) Total area (2000): 6.305219 sq. miles (16.330439 sq. km) FIPS code: 06925 Located within: Wisconsin (WI), FIPS 55 Location: 43.969732 N, 88.948717 W ZIP Codes (1990): 54923 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Berlin, WI Berlin