ZIP Code Area 811XX
- ZIP Code Area 81101
- ZIP Code Area 81120
- ZIP Code Area 81121
- ZIP Code Area 81122
- ZIP Code Area 81123
- ZIP Code Area 81124
- ZIP Code Area 81125
- ZIP Code Area 81126
- ZIP Code Area 81128
- ZIP Code Area 81129
- ZIP Code Area 81130
- ZIP Code Area 81131
- ZIP Code Area 81132
- ZIP Code Area 81133
- ZIP Code Area 81136
- ZIP Code Area 81137
- ZIP Code Area 81138
- ZIP Code Area 81140
- ZIP Code Area 81141
- ZIP Code Area 81143
- ZIP Code Area 81144
- ZIP Code Area 81146
- ZIP Code Area 81147
- ZIP Code Area 81148
- ZIP Code Area 81149
- ZIP Code Area 81151
- ZIP Code Area 81152
- ZIP Code Area 81154
- ZIP Code Area 81155