Post Office in Jefferson County, WI

Find The Office You Need

• Fort Atkinson Post Office

  24 Milwaukee Avenue East, Fort Atkinson, WI 53538

  920-563-5881
• Helenville Post Office

  W3290 US Hwy 18, Helenville, WI 53137

  920-674-2900
• Ixonia Post Office

  W1235 Marietta Avenue, Ixonia, WI 53036

  920-261-3306
• Jefferson Post Office

  122 South Center Avenue, Jefferson, WI 53549

  920-674-3131
• Johnson Creek Post Office

  115 Depot Street, Johnson Creek, WI 53038

  920-699-3395
• Lake Mills Post Office

  155 East Oak Street, Lake Mills, WI 53551

  920-648-4707
• Palmyra Post Office

  116 North 3rd Street, Palmyra, WI 53156

  262-495-2784
• Sullivan Post Office

  707 Palmyra Street, Sullivan, WI 53178

  262-593-2332
• Waterloo Post Office

  241 West Madison Street, Waterloo, WI 53594

  920-478-4335
• Watertown Post Office

  411 Dodge Street, Watertown, WI 53094

  920-261-5929