ZIP Code Area 538XX
- ZIP Code Area 53801
- ZIP Code Area 53802
- ZIP Code Area 53803
- ZIP Code Area 53804
- ZIP Code Area 53805
- ZIP Code Area 53806
- ZIP Code Area 53807
- ZIP Code Area 53808
- ZIP Code Area 53809
- ZIP Code Area 53810
- ZIP Code Area 53811
- ZIP Code Area 53813
- ZIP Code Area 53816
- ZIP Code Area 53817
- ZIP Code Area 53818
- ZIP Code Area 53820
- ZIP Code Area 53821
- ZIP Code Area 53825
- ZIP Code Area 53826
- ZIP Code Area 53827