A PO BOX number can be less than or more than four digit. For post office boxes, the general rule is that each box has its own ZIP+4 code.
The last four digit is often one of the following:
1. Zero plus the last three digits of the box number (eg. PO BOX 1001, Los Angeles CA 90001-0001).
2. The last four digits of the box number (eg. PO BOX 9991, Twin Peaks CA 92391-9991).
3. If the box number is less than four digits, enough zeros prepended to the front of the box number to produce a four-digit number(eg. PO BOX 1, Shreveport LA 71161-0001).
However, there is no uniform rule, the zip code plus four is for reference only, the ZIP+4 code must be looked up individually for each box in the USPS offical website.
PO BOX 1081, BIG SPRING, TX 79721-1081
PO BOX 1082, BIG SPRING, TX 79721-1082
PO BOX 1083, BIG SPRING, TX 79721-1083
PO BOX 1084, BIG SPRING, TX 79721-1084
PO BOX 1085, BIG SPRING, TX 79721-1085
PO BOX 1086, BIG SPRING, TX 79721-1086
PO BOX 1087, BIG SPRING, TX 79721-1087
PO BOX 1088, BIG SPRING, TX 79721-1088
PO BOX 1089, BIG SPRING, TX 79721-1089
PO BOX 1090, BIG SPRING, TX 79721-1090
PO BOX 1091, BIG SPRING, TX 79721-1091
PO BOX 1092, BIG SPRING, TX 79721-1092
PO BOX 1093, BIG SPRING, TX 79721-1093
PO BOX 1094, BIG SPRING, TX 79721-1094
PO BOX 1095, BIG SPRING, TX 79721-1095
PO BOX 1096, BIG SPRING, TX 79721-1096
PO BOX 1097, BIG SPRING, TX 79721-1097
PO BOX 1098, BIG SPRING, TX 79721-1098
PO BOX 1099, BIG SPRING, TX 79721-1099
PO BOX 1100, BIG SPRING, TX 79721-1100
PO BOX 1101, BIG SPRING, TX 79721-1101
PO BOX 1102, BIG SPRING, TX 79721-1102
PO BOX 1103, BIG SPRING, TX 79721-1103
PO BOX 1104, BIG SPRING, TX 79721-1104
PO BOX 1105, BIG SPRING, TX 79721-1105
PO BOX 1106, BIG SPRING, TX 79721-1106
PO BOX 1107, BIG SPRING, TX 79721-1107
PO BOX 1108, BIG SPRING, TX 79721-1108
PO BOX 1109, BIG SPRING, TX 79721-1109
PO BOX 1110, BIG SPRING, TX 79721-1110
PO BOX 1111, BIG SPRING, TX 79721-1111
PO BOX 1112, BIG SPRING, TX 79721-1112
PO BOX 1113, BIG SPRING, TX 79721-1113
PO BOX 1114, BIG SPRING, TX 79721-1114
PO BOX 1115, BIG SPRING, TX 79721-1115
PO BOX 1116, BIG SPRING, TX 79721-1116
PO BOX 1117, BIG SPRING, TX 79721-1117
PO BOX 1118, BIG SPRING, TX 79721-1118
PO BOX 1119, BIG SPRING, TX 79721-1119
PO BOX 1120, BIG SPRING, TX 79721-1120
PO BOX 1121, BIG SPRING, TX 79721-1121
PO BOX 1122, BIG SPRING, TX 79721-1122
PO BOX 1123, BIG SPRING, TX 79721-1123
PO BOX 1124, BIG SPRING, TX 79721-1124
PO BOX 1125, BIG SPRING, TX 79721-1125
PO BOX 1126, BIG SPRING, TX 79721-1126
PO BOX 1127, BIG SPRING, TX 79721-1127
PO BOX 1128, BIG SPRING, TX 79721-1128
PO BOX 1129, BIG SPRING, TX 79721-1129
PO BOX 1130, BIG SPRING, TX 79721-1130
PO BOX 1131, BIG SPRING, TX 79721-1131
PO BOX 1132, BIG SPRING, TX 79721-1132
PO BOX 1133, BIG SPRING, TX 79721-1133
PO BOX 1134, BIG SPRING, TX 79721-1134
PO BOX 1135, BIG SPRING, TX 79721-1135
PO BOX 1136, BIG SPRING, TX 79721-1136
PO BOX 1137, BIG SPRING, TX 79721-1137
PO BOX 1138, BIG SPRING, TX 79721-1138
PO BOX 1139, BIG SPRING, TX 79721-1139
PO BOX 1140, BIG SPRING, TX 79721-1140
PO BOX 1141, BIG SPRING, TX 79721-1141
PO BOX 1142, BIG SPRING, TX 79721-1142
PO BOX 1143, BIG SPRING, TX 79721-1143
PO BOX 1144, BIG SPRING, TX 79721-1144
PO BOX 1145, BIG SPRING, TX 79721-1145
PO BOX 1146, BIG SPRING, TX 79721-1146
PO BOX 1147, BIG SPRING, TX 79721-1147
PO BOX 1148, BIG SPRING, TX 79721-1148
PO BOX 1149, BIG SPRING, TX 79721-1149
PO BOX 1150, BIG SPRING, TX 79721-1150
PO BOX 1151, BIG SPRING, TX 79721-1151
PO BOX 1152, BIG SPRING, TX 79721-1152
PO BOX 1153, BIG SPRING, TX 79721-1153
PO BOX 1154, BIG SPRING, TX 79721-1154
PO BOX 1155, BIG SPRING, TX 79721-1155
PO BOX 1156, BIG SPRING, TX 79721-1156
PO BOX 1157, BIG SPRING, TX 79721-1157
PO BOX 1158, BIG SPRING, TX 79721-1158
PO BOX 1159, BIG SPRING, TX 79721-1159
PO BOX 1160, BIG SPRING, TX 79721-1160
PO BOX 1161, BIG SPRING, TX 79721-1161
PO BOX 1162, BIG SPRING, TX 79721-1162
PO BOX 1163, BIG SPRING, TX 79721-1163
PO BOX 1164, BIG SPRING, TX 79721-1164
PO BOX 1165, BIG SPRING, TX 79721-1165
PO BOX 1166, BIG SPRING, TX 79721-1166
PO BOX 1167, BIG SPRING, TX 79721-1167
PO BOX 1168, BIG SPRING, TX 79721-1168
PO BOX 1169, BIG SPRING, TX 79721-1169
PO BOX 1170, BIG SPRING, TX 79721-1170
PO BOX 1171, BIG SPRING, TX 79721-1171
PO BOX 1172, BIG SPRING, TX 79721-1172
PO BOX 1173, BIG SPRING, TX 79721-1173
PO BOX 1174, BIG SPRING, TX 79721-1174
PO BOX 1175, BIG SPRING, TX 79721-1175
PO BOX 1176, BIG SPRING, TX 79721-1176
PO BOX 1177, BIG SPRING, TX 79721-1177
PO BOX 1178, BIG SPRING, TX 79721-1178
PO BOX 1179, BIG SPRING, TX 79721-1179
PO BOX 1180, BIG SPRING, TX 79721-1180
PO BOX 1181, BIG SPRING, TX 79721-1181
PO BOX 1182, BIG SPRING, TX 79721-1182
PO BOX 1183, BIG SPRING, TX 79721-1183
PO BOX 1184, BIG SPRING, TX 79721-1184
PO BOX 1185, BIG SPRING, TX 79721-1185
PO BOX 1186, BIG SPRING, TX 79721-1186
PO BOX 1187, BIG SPRING, TX 79721-1187
PO BOX 1188, BIG SPRING, TX 79721-1188
PO BOX 1189, BIG SPRING, TX 79721-1189
PO BOX 1190, BIG SPRING, TX 79721-1190
PO BOX 1191, BIG SPRING, TX 79721-1191
PO BOX 1192, BIG SPRING, TX 79721-1192
PO BOX 1193, BIG SPRING, TX 79721-1193
PO BOX 1194, BIG SPRING, TX 79721-1194
PO BOX 1195, BIG SPRING, TX 79721-1195
PO BOX 1196, BIG SPRING, TX 79721-1196
PO BOX 1197, BIG SPRING, TX 79721-1197
PO BOX 1198, BIG SPRING, TX 79721-1198
PO BOX 1199, BIG SPRING, TX 79721-1199
PO BOX 1200, BIG SPRING, TX 79721-1200
PO BOX 1201, BIG SPRING, TX 79721-1201
PO BOX 1202, BIG SPRING, TX 79721-1202
PO BOX 1203, BIG SPRING, TX 79721-1203
PO BOX 1204, BIG SPRING, TX 79721-1204
PO BOX 1205, BIG SPRING, TX 79721-1205
PO BOX 1206, BIG SPRING, TX 79721-1206
PO BOX 1207, BIG SPRING, TX 79721-1207
PO BOX 1208, BIG SPRING, TX 79721-1208
PO BOX 1209, BIG SPRING, TX 79721-1209
PO BOX 1210, BIG SPRING, TX 79721-1210
PO BOX 1211, BIG SPRING, TX 79721-1211
PO BOX 1212, BIG SPRING, TX 79721-1212
PO BOX 1213, BIG SPRING, TX 79721-1213
PO BOX 1214, BIG SPRING, TX 79721-1214
PO BOX 1215, BIG SPRING, TX 79721-1215
PO BOX 1216, BIG SPRING, TX 79721-1216
PO BOX 1217, BIG SPRING, TX 79721-1217
PO BOX 1218, BIG SPRING, TX 79721-1218
PO BOX 1219, BIG SPRING, TX 79721-1219
PO BOX 1220, BIG SPRING, TX 79721-1220
PO BOX 1221, BIG SPRING, TX 79721-1221
PO BOX 1222, BIG SPRING, TX 79721-1222
PO BOX 1223, BIG SPRING, TX 79721-1223
PO BOX 1224, BIG SPRING, TX 79721-1224
PO BOX 1225, BIG SPRING, TX 79721-1225
PO BOX 1226, BIG SPRING, TX 79721-1226
PO BOX 1227, BIG SPRING, TX 79721-1227
PO BOX 1228, BIG SPRING, TX 79721-1228
PO BOX 1229, BIG SPRING, TX 79721-1229
PO BOX 1230, BIG SPRING, TX 79721-1230
PO BOX 1231, BIG SPRING, TX 79721-1231
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