ZIP Code Area 231XX
- ZIP Code Area 23102
- ZIP Code Area 23103
- ZIP Code Area 23106
- ZIP Code Area 23108
- ZIP Code Area 23109
- ZIP Code Area 23110
- ZIP Code Area 23111
- ZIP Code Area 23112
- ZIP Code Area 23113
- ZIP Code Area 23114
- ZIP Code Area 23115
- ZIP Code Area 23116
- ZIP Code Area 23117
- ZIP Code Area 23119
- ZIP Code Area 23120
- ZIP Code Area 23123
- ZIP Code Area 23124
- ZIP Code Area 23125
- ZIP Code Area 23126
- ZIP Code Area 23128
- ZIP Code Area 23129
- ZIP Code Area 23130
- ZIP Code Area 23138
- ZIP Code Area 23139
- ZIP Code Area 23140
- ZIP Code Area 23141
- ZIP Code Area 23146
- ZIP Code Area 23148
- ZIP Code Area 23149
- ZIP Code Area 23150
- ZIP Code Area 23153
- ZIP Code Area 23156
- ZIP Code Area 23160
- ZIP Code Area 23161
- ZIP Code Area 23163
- ZIP Code Area 23168
- ZIP Code Area 23169
- ZIP Code Area 23173
- ZIP Code Area 23175
- ZIP Code Area 23176
- ZIP Code Area 23177
- ZIP Code Area 23180
- ZIP Code Area 23181
- ZIP Code Area 23185
- ZIP Code Area 23187
- ZIP Code Area 23188
- ZIP Code Area 23192