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 1021, PORT ORFORD, OR 97465-1021
PO BOX 1022, PORT ORFORD, OR 97465-1022
PO BOX 1023, PORT ORFORD, OR 97465-1023
PO BOX 1024, PORT ORFORD, OR 97465-1024
PO BOX 1025, PORT ORFORD, OR 97465-1025
PO BOX 1026, PORT ORFORD, OR 97465-1026
PO BOX 1027, PORT ORFORD, OR 97465-1027
PO BOX 1028, PORT ORFORD, OR 97465-1028
PO BOX 1029, PORT ORFORD, OR 97465-1029
PO BOX 1030, PORT ORFORD, OR 97465-1030
PO BOX 1031, PORT ORFORD, OR 97465-1031
PO BOX 1032, PORT ORFORD, OR 97465-1032
PO BOX 1033, PORT ORFORD, OR 97465-1033
PO BOX 1034, PORT ORFORD, OR 97465-1034
PO BOX 1035, PORT ORFORD, OR 97465-1035
PO BOX 1036, PORT ORFORD, OR 97465-1036
PO BOX 1037, PORT ORFORD, OR 97465-1037
PO BOX 1038, PORT ORFORD, OR 97465-1038
PO BOX 1039, PORT ORFORD, OR 97465-1039
PO BOX 1040, PORT ORFORD, OR 97465-1040
PO BOX 1041, PORT ORFORD, OR 97465-1041
PO BOX 1042, PORT ORFORD, OR 97465-1042
PO BOX 1043, PORT ORFORD, OR 97465-1043
PO BOX 1044, PORT ORFORD, OR 97465-1044
PO BOX 1045, PORT ORFORD, OR 97465-1045
PO BOX 1046, PORT ORFORD, OR 97465-1046
PO BOX 1047, PORT ORFORD, OR 97465-1047
PO BOX 1048, PORT ORFORD, OR 97465-1048
PO BOX 1049, PORT ORFORD, OR 97465-1049
PO BOX 1050, PORT ORFORD, OR 97465-1050
PO BOX 1051, PORT ORFORD, OR 97465-1051
PO BOX 1052, PORT ORFORD, OR 97465-1052
PO BOX 1053, PORT ORFORD, OR 97465-1053
PO BOX 1054, PORT ORFORD, OR 97465-1054
PO BOX 1055, PORT ORFORD, OR 97465-1055
PO BOX 1056, PORT ORFORD, OR 97465-1056
PO BOX 1057, PORT ORFORD, OR 97465-1057
PO BOX 1058, PORT ORFORD, OR 97465-1058
PO BOX 1059, PORT ORFORD, OR 97465-1059
PO BOX 1060, PORT ORFORD, OR 97465-1060
PO BOX 1061, PORT ORFORD, OR 97465-1061
PO BOX 1062, PORT ORFORD, OR 97465-1062
PO BOX 1063, PORT ORFORD, OR 97465-1063
PO BOX 1064, PORT ORFORD, OR 97465-1064
PO BOX 1065, PORT ORFORD, OR 97465-1065
PO BOX 1066, PORT ORFORD, OR 97465-1066
PO BOX 1067, PORT ORFORD, OR 97465-1067
PO BOX 1068, PORT ORFORD, OR 97465-1068
PO BOX 1069, PORT ORFORD, OR 97465-1069
PO BOX 1070, PORT ORFORD, OR 97465-1070
PO BOX 1071, PORT ORFORD, OR 97465-1071
PO BOX 1072, PORT ORFORD, OR 97465-1072
PO BOX 1073, PORT ORFORD, OR 97465-1073
PO BOX 1074, PORT ORFORD, OR 97465-1074
PO BOX 1075, PORT ORFORD, OR 97465-1075
PO BOX 1076, PORT ORFORD, OR 97465-1076
PO BOX 1077, PORT ORFORD, OR 97465-1077
PO BOX 1078, PORT ORFORD, OR 97465-1078
PO BOX 1079, PORT ORFORD, OR 97465-1079
PO BOX 1080, PORT ORFORD, OR 97465-1080
PO BOX 1081, PORT ORFORD, OR 97465-1081
PO BOX 1082, PORT ORFORD, OR 97465-1082
PO BOX 1083, PORT ORFORD, OR 97465-1083
PO BOX 1084, PORT ORFORD, OR 97465-1084
PO BOX 1085, PORT ORFORD, OR 97465-1085
PO BOX 1086, PORT ORFORD, OR 97465-1086
PO BOX 1087, PORT ORFORD, OR 97465-1087
PO BOX 1088, PORT ORFORD, OR 97465-1088
PO BOX 1089, PORT ORFORD, OR 97465-1089
PO BOX 1090, PORT ORFORD, OR 97465-1090
PO BOX 1091, PORT ORFORD, OR 97465-1091
PO BOX 1092, PORT ORFORD, OR 97465-1092
PO BOX 1093, PORT ORFORD, OR 97465-1093
PO BOX 1094, PORT ORFORD, OR 97465-1094
PO BOX 1095, PORT ORFORD, OR 97465-1095
PO BOX 1096, PORT ORFORD, OR 97465-1096
PO BOX 1097, PORT ORFORD, OR 97465-1097
PO BOX 1098, PORT ORFORD, OR 97465-1098
PO BOX 1099, PORT ORFORD, OR 97465-1099
PO BOX 1100, PORT ORFORD, OR 97465-1100
PO BOX 1101, PORT ORFORD, OR 97465-1101
PO BOX 1102, PORT ORFORD, OR 97465-1102
PO BOX 1103, PORT ORFORD, OR 97465-1103
PO BOX 1104, PORT ORFORD, OR 97465-1104
PO BOX 1105, PORT ORFORD, OR 97465-1105
PO BOX 1106, PORT ORFORD, OR 97465-1106
PO BOX 1107, PORT ORFORD, OR 97465-1107
PO BOX 1108, PORT ORFORD, OR 97465-1108
PO BOX 1109, PORT ORFORD, OR 97465-1109
PO BOX 1110, PORT ORFORD, OR 97465-1110
PO BOX 1111, PORT ORFORD, OR 97465-1111
PO BOX 1112, PORT ORFORD, OR 97465-1112
PO BOX 1113, PORT ORFORD, OR 97465-1113
PO BOX 1114, PORT ORFORD, OR 97465-1114
PO BOX 1115, PORT ORFORD, OR 97465-1115
PO BOX 1116, PORT ORFORD, OR 97465-1116
PO BOX 1117, PORT ORFORD, OR 97465-1117
PO BOX 1118, PORT ORFORD, OR 97465-1118
PO BOX 1119, PORT ORFORD, OR 97465-1119
PO BOX 1120, PORT ORFORD, OR 97465-1120
PO BOX 1121, PORT ORFORD, OR 97465-1121
PO BOX 1122, PORT ORFORD, OR 97465-1122
PO BOX 1123, PORT ORFORD, OR 97465-1123
PO BOX 1124, PORT ORFORD, OR 97465-1124
PO BOX 1125, PORT ORFORD, OR 97465-1125
PO BOX 1126, PORT ORFORD, OR 97465-1126
PO BOX 1127, PORT ORFORD, OR 97465-1127
PO BOX 1128, PORT ORFORD, OR 97465-1128
PO BOX 1129, PORT ORFORD, OR 97465-1129
PO BOX 1130, PORT ORFORD, OR 97465-1130
PO BOX 1131, PORT ORFORD, OR 97465-1131
PO BOX 1132, PORT ORFORD, OR 97465-1132
PO BOX 1133, PORT ORFORD, OR 97465-1133
PO BOX 1134, PORT ORFORD, OR 97465-1134
PO BOX 1135, PORT ORFORD, OR 97465-1135
PO BOX 1136, PORT ORFORD, OR 97465-1136
PO BOX 1137, PORT ORFORD, OR 97465-1137
PO BOX 1138, PORT ORFORD, OR 97465-1138
PO BOX 1139, PORT ORFORD, OR 97465-1139
PO BOX 1140, PORT ORFORD, OR 97465-1140
PO BOX 1141, PORT ORFORD, OR 97465-1141
PO BOX 1142, PORT ORFORD, OR 97465-1142
PO BOX 1143, PORT ORFORD, OR 97465-1143
PO BOX 1144, PORT ORFORD, OR 97465-1144
PO BOX 1145, PORT ORFORD, OR 97465-1145
PO BOX 1146, PORT ORFORD, OR 97465-1146
PO BOX 1147, PORT ORFORD, OR 97465-1147
PO BOX 1148, PORT ORFORD, OR 97465-1148
PO BOX 1149, PORT ORFORD, OR 97465-1149
PO BOX 1150, PORT ORFORD, OR 97465-1150
PO BOX 1151, PORT ORFORD, OR 97465-1151
PO BOX 1152, PORT ORFORD, OR 97465-1152
PO BOX 1153, PORT ORFORD, OR 97465-1153
PO BOX 1154, PORT ORFORD, OR 97465-1154
PO BOX 1155, PORT ORFORD, OR 97465-1155
PO BOX 1156, PORT ORFORD, OR 97465-1156
PO BOX 1157, PORT ORFORD, OR 97465-1157
PO BOX 1158, PORT ORFORD, OR 97465-1158
PO BOX 1159, PORT ORFORD, OR 97465-1159
PO BOX 1160, PORT ORFORD, OR 97465-1160
PO BOX 1161, PORT ORFORD, OR 97465-1161
PO BOX 1162, PORT ORFORD, OR 97465-1162
PO BOX 1163, PORT ORFORD, OR 97465-1163
PO BOX 1164, PORT ORFORD, OR 97465-1164
PO BOX 1165, PORT ORFORD, OR 97465-1165
PO BOX 1166, PORT ORFORD, OR 97465-1166
PO BOX 1167, PORT ORFORD, OR 97465-1167
PO BOX 1168, PORT ORFORD, OR 97465-1168
PO BOX 1169, PORT ORFORD, OR 97465-1169
PO BOX 1170, PORT ORFORD, OR 97465-1170
PO BOX 1171, PORT ORFORD, OR 97465-1171
PO BOX 1172, PORT ORFORD, OR 97465-1172
PO BOX 1173, PORT ORFORD, OR 97465-1173
PO BOX 1174, PORT ORFORD, OR 97465-1174
PO BOX 1175, PORT ORFORD, OR 97465-1175
PO BOX 1176, PORT ORFORD, OR 97465-1176
PO BOX 1177, PORT ORFORD, OR 97465-1177
PO BOX 1178, PORT ORFORD, OR 97465-1178
PO BOX 1179, PORT ORFORD, OR 97465-1179
PO BOX 1180, PORT ORFORD, OR 97465-1180
PO BOX 1181, PORT ORFORD, OR 97465-1181
PO BOX 1182, PORT ORFORD, OR 97465-1182
PO BOX 1183, PORT ORFORD, OR 97465-1183
PO BOX 1184, PORT ORFORD, OR 97465-1184
PO BOX 1185, PORT ORFORD, OR 97465-1185
PO BOX 1186, PORT ORFORD, OR 97465-1186
PO BOX 1187, PORT ORFORD, OR 97465-1187
PO BOX 1188, PORT ORFORD, OR 97465-1188
PO BOX 1189, PORT ORFORD, OR 97465-1189
PO BOX 1190, PORT ORFORD, OR 97465-1190
PO BOX 1191, PORT ORFORD, OR 97465-1191
PO BOX 1192, PORT ORFORD, OR 97465-1192
PO BOX 1193, PORT ORFORD, OR 97465-1193
PO BOX 1194, PORT ORFORD, OR 97465-1194
PO BOX 1195, PORT ORFORD, OR 97465-1195
PO BOX 1196, PORT ORFORD, OR 97465-1196
PO BOX 1197, PORT ORFORD, OR 97465-1197
PO BOX 1198, PORT ORFORD, OR 97465-1198
PO BOX 1199, PORT ORFORD, OR 97465-1199
PO BOX 1200, PORT ORFORD, OR 97465-1200
PO BOX 1201, PORT ORFORD, OR 97465-1201
PO BOX 1202, PORT ORFORD, OR 97465-1202
PO BOX 1203, PORT ORFORD, OR 97465-1203
PO BOX 1204, PORT ORFORD, OR 97465-1204
PO BOX 1205, PORT ORFORD, OR 97465-1205
PO BOX 1206, PORT ORFORD, OR 97465-1206
PO BOX 1207, PORT ORFORD, OR 97465-1207
PO BOX 1208, PORT ORFORD, OR 97465-1208
PO BOX 1209, PORT ORFORD, OR 97465-1209
PO BOX 1210, PORT ORFORD, OR 97465-1210
PO BOX 1211, PORT ORFORD, OR 97465-1211
PO BOX 1212, PORT ORFORD, OR 97465-1212
PO BOX 1213, PORT ORFORD, OR 97465-1213
PO BOX 1214, PORT ORFORD, OR 97465-1214
PO BOX 1215, PORT ORFORD, OR 97465-1215
PO BOX 1216, PORT ORFORD, OR 97465-1216
PO BOX 1217, PORT ORFORD, OR 97465-1217
PO BOX 1218, PORT ORFORD, OR 97465-1218
PO BOX 1219, PORT ORFORD, OR 97465-1219
PO BOX 1220, PORT ORFORD, OR 97465-1220
PO BOX 1221, PORT ORFORD, OR 97465-1221
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