ZIP Code Area 542XX
- ZIP Code Area 54201
- ZIP Code Area 54202
- ZIP Code Area 54204
- ZIP Code Area 54205
- ZIP Code Area 54207
- ZIP Code Area 54208
- ZIP Code Area 54209
- ZIP Code Area 54210
- ZIP Code Area 54211
- ZIP Code Area 54212
- ZIP Code Area 54213
- ZIP Code Area 54214
- ZIP Code Area 54216
- ZIP Code Area 54217
- ZIP Code Area 54220
- ZIP Code Area 54227
- ZIP Code Area 54228
- ZIP Code Area 54229
- ZIP Code Area 54230
- ZIP Code Area 54232
- ZIP Code Area 54234
- ZIP Code Area 54235
- ZIP Code Area 54241
- ZIP Code Area 54245
- ZIP Code Area 54246
- ZIP Code Area 54247