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 8001, CALABASAS, CA 91372-8001
PO BOX 8002, CALABASAS, CA 91372-8002
PO BOX 8003, CALABASAS, CA 91372-8003
PO BOX 8004, CALABASAS, CA 91372-8004
PO BOX 8005, CALABASAS, CA 91372-8005
PO BOX 8006, CALABASAS, CA 91372-8006
PO BOX 8007, CALABASAS, CA 91372-8007
PO BOX 8008, CALABASAS, CA 91372-8008
PO BOX 8009, CALABASAS, CA 91372-8009
PO BOX 8010, CALABASAS, CA 91372-8010
PO BOX 8011, CALABASAS, CA 91372-8011
PO BOX 8012, CALABASAS, CA 91372-8012
PO BOX 8013, CALABASAS, CA 91372-8013
PO BOX 8014, CALABASAS, CA 91372-8014
PO BOX 8015, CALABASAS, CA 91372-8015
PO BOX 8016, CALABASAS, CA 91372-8016
PO BOX 8017, CALABASAS, CA 91372-8017
PO BOX 8018, CALABASAS, CA 91372-8018
PO BOX 8019, CALABASAS, CA 91372-8019
PO BOX 8020, CALABASAS, CA 91372-8020
PO BOX 8021, CALABASAS, CA 91372-8021
PO BOX 8022, CALABASAS, CA 91372-8022
PO BOX 8023, CALABASAS, CA 91372-8023
PO BOX 8024, CALABASAS, CA 91372-8024
PO BOX 8025, CALABASAS, CA 91372-8025
PO BOX 8026, CALABASAS, CA 91372-8026
PO BOX 8027, CALABASAS, CA 91372-8027
PO BOX 8028, CALABASAS, CA 91372-8028
PO BOX 8029, CALABASAS, CA 91372-8029
PO BOX 8030, CALABASAS, CA 91372-8030
PO BOX 8031, CALABASAS, CA 91372-8031
PO BOX 8032, CALABASAS, CA 91372-8032
PO BOX 8033, CALABASAS, CA 91372-8033
PO BOX 8034, CALABASAS, CA 91372-8034
PO BOX 8035, CALABASAS, CA 91372-8035
PO BOX 8036, CALABASAS, CA 91372-8036
PO BOX 8037, CALABASAS, CA 91372-8037
PO BOX 8038, CALABASAS, CA 91372-8038
PO BOX 8039, CALABASAS, CA 91372-8039
PO BOX 8040, CALABASAS, CA 91372-8040
PO BOX 8041, CALABASAS, CA 91372-8041
PO BOX 8042, CALABASAS, CA 91372-8042
PO BOX 8043, CALABASAS, CA 91372-8043
PO BOX 8044, CALABASAS, CA 91372-8044
PO BOX 8045, CALABASAS, CA 91372-8045
PO BOX 8046, CALABASAS, CA 91372-8046
PO BOX 8047, CALABASAS, CA 91372-8047
PO BOX 8048, CALABASAS, CA 91372-8048
PO BOX 8049, CALABASAS, CA 91372-8049
PO BOX 8050, CALABASAS, CA 91372-8050
PO BOX 8051, CALABASAS, CA 91372-8051
PO BOX 8052, CALABASAS, CA 91372-8052
PO BOX 8053, CALABASAS, CA 91372-8053
PO BOX 8054, CALABASAS, CA 91372-8054
PO BOX 8055, CALABASAS, CA 91372-8055
PO BOX 8056, CALABASAS, CA 91372-8056
PO BOX 8057, CALABASAS, CA 91372-8057
PO BOX 8058, CALABASAS, CA 91372-8058
PO BOX 8059, CALABASAS, CA 91372-8059
PO BOX 8060, CALABASAS, CA 91372-8060
PO BOX 8061, CALABASAS, CA 91372-8061
PO BOX 8062, CALABASAS, CA 91372-8062
PO BOX 8063, CALABASAS, CA 91372-8063
PO BOX 8064, CALABASAS, CA 91372-8064
PO BOX 8065, CALABASAS, CA 91372-8065
PO BOX 8066, CALABASAS, CA 91372-8066
PO BOX 8067, CALABASAS, CA 91372-8067
PO BOX 8068, CALABASAS, CA 91372-8068
PO BOX 8069, CALABASAS, CA 91372-8069
PO BOX 8070, CALABASAS, CA 91372-8070
PO BOX 8071, CALABASAS, CA 91372-8071
PO BOX 8072, CALABASAS, CA 91372-8072
PO BOX 8073, CALABASAS, CA 91372-8073
PO BOX 8074, CALABASAS, CA 91372-8074
PO BOX 8075, CALABASAS, CA 91372-8075
PO BOX 8076, CALABASAS, CA 91372-8076
PO BOX 8077, CALABASAS, CA 91372-8077
PO BOX 8078, CALABASAS, CA 91372-8078
PO BOX 8079, CALABASAS, CA 91372-8079
PO BOX 8080, CALABASAS, CA 91372-8080
PO BOX 8081, CALABASAS, CA 91372-8081
PO BOX 8082, CALABASAS, CA 91372-8082
PO BOX 8083, CALABASAS, CA 91372-8083
PO BOX 8084, CALABASAS, CA 91372-8084
PO BOX 8085, CALABASAS, CA 91372-8085
PO BOX 8086, CALABASAS, CA 91372-8086
PO BOX 8087, CALABASAS, CA 91372-8087
PO BOX 8088, CALABASAS, CA 91372-8088
PO BOX 8089, CALABASAS, CA 91372-8089
PO BOX 8090, CALABASAS, CA 91372-8090
PO BOX 8091, CALABASAS, CA 91372-8091
PO BOX 8092, CALABASAS, CA 91372-8092
PO BOX 8093, CALABASAS, CA 91372-8093
PO BOX 8094, CALABASAS, CA 91372-8094
PO BOX 8095, CALABASAS, CA 91372-8095
PO BOX 8096, CALABASAS, CA 91372-8096
PO BOX 8097, CALABASAS, CA 91372-8097
PO BOX 8098, CALABASAS, CA 91372-8098
PO BOX 8099, CALABASAS, CA 91372-8099
PO BOX 8100, CALABASAS, CA 91372-8100
PO BOX 8101, CALABASAS, CA 91372-8101
PO BOX 8102, CALABASAS, CA 91372-8102
PO BOX 8103, CALABASAS, CA 91372-8103
PO BOX 8104, CALABASAS, CA 91372-8104
PO BOX 8105, CALABASAS, CA 91372-8105
PO BOX 8106, CALABASAS, CA 91372-8106
PO BOX 8107, CALABASAS, CA 91372-8107
PO BOX 8108, CALABASAS, CA 91372-8108
PO BOX 8109, CALABASAS, CA 91372-8109
PO BOX 8110, CALABASAS, CA 91372-8110
PO BOX 8111, CALABASAS, CA 91372-8111
PO BOX 8112, CALABASAS, CA 91372-8112
PO BOX 8113, CALABASAS, CA 91372-8113
PO BOX 8114, CALABASAS, CA 91372-8114
PO BOX 8115, CALABASAS, CA 91372-8115
PO BOX 8116, CALABASAS, CA 91372-8116
PO BOX 8117, CALABASAS, CA 91372-8117
PO BOX 8118, CALABASAS, CA 91372-8118
PO BOX 8119, CALABASAS, CA 91372-8119
PO BOX 8120, CALABASAS, CA 91372-8120
PO BOX 8121, CALABASAS, CA 91372-8121
PO BOX 8122, CALABASAS, CA 91372-8122
PO BOX 8123, CALABASAS, CA 91372-8123
PO BOX 8124, CALABASAS, CA 91372-8124
PO BOX 8125, CALABASAS, CA 91372-8125
PO BOX 8126, CALABASAS, CA 91372-8126
PO BOX 8127, CALABASAS, CA 91372-8127
PO BOX 8128, CALABASAS, CA 91372-8128
PO BOX 8129, CALABASAS, CA 91372-8129
PO BOX 8130, CALABASAS, CA 91372-8130
PO BOX 8131, CALABASAS, CA 91372-8131
PO BOX 8132, CALABASAS, CA 91372-8132
PO BOX 8133, CALABASAS, CA 91372-8133
PO BOX 8134, CALABASAS, CA 91372-8134
PO BOX 8135, CALABASAS, CA 91372-8135
PO BOX 8136, CALABASAS, CA 91372-8136
PO BOX 8137, CALABASAS, CA 91372-8137
PO BOX 8138, CALABASAS, CA 91372-8138
PO BOX 8139, CALABASAS, CA 91372-8139
PO BOX 8140, CALABASAS, CA 91372-8140
PO BOX 8141, CALABASAS, CA 91372-8141
PO BOX 8142, CALABASAS, CA 91372-8142
PO BOX 8143, CALABASAS, CA 91372-8143
PO BOX 8144, CALABASAS, CA 91372-8144
PO BOX 8145, CALABASAS, CA 91372-8145
PO BOX 8146, CALABASAS, CA 91372-8146
PO BOX 8147, CALABASAS, CA 91372-8147
PO BOX 8148, CALABASAS, CA 91372-8148
PO BOX 8149, CALABASAS, CA 91372-8149
PO BOX 8150, CALABASAS, CA 91372-8150
PO BOX 8151, CALABASAS, CA 91372-8151
PO BOX 8152, CALABASAS, CA 91372-8152
PO BOX 8153, CALABASAS, CA 91372-8153
PO BOX 8154, CALABASAS, CA 91372-8154
PO BOX 8155, CALABASAS, CA 91372-8155
PO BOX 8156, CALABASAS, CA 91372-8156
PO BOX 8157, CALABASAS, CA 91372-8157
PO BOX 8158, CALABASAS, CA 91372-8158
PO BOX 8159, CALABASAS, CA 91372-8159
PO BOX 8160, CALABASAS, CA 91372-8160
PO BOX 8161, CALABASAS, CA 91372-8161
PO BOX 8162, CALABASAS, CA 91372-8162
PO BOX 8163, CALABASAS, CA 91372-8163
PO BOX 8164, CALABASAS, CA 91372-8164
PO BOX 8165, CALABASAS, CA 91372-8165
PO BOX 8166, CALABASAS, CA 91372-8166
PO BOX 8167, CALABASAS, CA 91372-8167
PO BOX 8168, CALABASAS, CA 91372-8168
PO BOX 8169, CALABASAS, CA 91372-8169
PO BOX 8170, CALABASAS, CA 91372-8170
PO BOX 8171, CALABASAS, CA 91372-8171
PO BOX 8172, CALABASAS, CA 91372-8172
PO BOX 8173, CALABASAS, CA 91372-8173
PO BOX 8174, CALABASAS, CA 91372-8174
PO BOX 8175, CALABASAS, CA 91372-8175
PO BOX 8176, CALABASAS, CA 91372-8176
PO BOX 8177, CALABASAS, CA 91372-8177
PO BOX 8178, CALABASAS, CA 91372-8178
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