Barrios de Wisconsin O

• Old North Milwaukee (10)
• Olde North (1)
• Olde Norwood (2)
• Orchard Ridge (3)
• Outer Appleton (49)
• Outer Brown Deer (3)
• Outer City of Sheboygan (4)
• Outer Eastern Green Bay (2)
• Outer Middleton (19)
• Outer Sun Prairie (35)
• Outer Verona (35)