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 49058, SAN JOSE, CA 95161-9058
PO BOX 49059, SAN JOSE, CA 95161-9059
PO BOX 49060, SAN JOSE, CA 95161-9060
PO BOX 49061, SAN JOSE, CA 95161-9061
PO BOX 49062, SAN JOSE, CA 95161-9062
PO BOX 49063, SAN JOSE, CA 95161-9063
PO BOX 49064, SAN JOSE, CA 95161-9064
PO BOX 49065, SAN JOSE, CA 95161-9065
PO BOX 49066, SAN JOSE, CA 95161-9066
PO BOX 49067, SAN JOSE, CA 95161-9067
PO BOX 49068, SAN JOSE, CA 95161-9068
PO BOX 49069, SAN JOSE, CA 95161-9069
PO BOX 49070, SAN JOSE, CA 95161-9070
PO BOX 49071, SAN JOSE, CA 95161-9071
PO BOX 49072, SAN JOSE, CA 95161-9072
PO BOX 49073, SAN JOSE, CA 95161-9073
PO BOX 49074, SAN JOSE, CA 95161-9074
PO BOX 49075, SAN JOSE, CA 95161-9075
PO BOX 49076, SAN JOSE, CA 95161-9076
PO BOX 49077, SAN JOSE, CA 95161-9077
PO BOX 49078, SAN JOSE, CA 95161-9078
PO BOX 49079, SAN JOSE, CA 95161-9079
PO BOX 49080, SAN JOSE, CA 95161-9080
PO BOX 49081, SAN JOSE, CA 95161-9081
PO BOX 49082, SAN JOSE, CA 95161-9082
PO BOX 49083, SAN JOSE, CA 95161-9083
PO BOX 49084, SAN JOSE, CA 95161-9084
PO BOX 49085, SAN JOSE, CA 95161-9085
PO BOX 49086, SAN JOSE, CA 95161-9086
PO BOX 49087, SAN JOSE, CA 95161-9087
PO BOX 49088, SAN JOSE, CA 95161-9088
PO BOX 49089, SAN JOSE, CA 95161-9089
PO BOX 49090, SAN JOSE, CA 95161-9090
PO BOX 49091, SAN JOSE, CA 95161-9091
PO BOX 49092, SAN JOSE, CA 95161-9092
PO BOX 49093, SAN JOSE, CA 95161-9093
PO BOX 49094, SAN JOSE, CA 95161-9094
PO BOX 49095, SAN JOSE, CA 95161-9095
PO BOX 49096, SAN JOSE, CA 95161-9096
PO BOX 49097, SAN JOSE, CA 95161-9097
PO BOX 49098, SAN JOSE, CA 95161-9098
PO BOX 49099, SAN JOSE, CA 95161-9099
PO BOX 49100, SAN JOSE, CA 95161-9100
PO BOX 49101, SAN JOSE, CA 95161-9101
PO BOX 49102, SAN JOSE, CA 95161-9102
PO BOX 49103, SAN JOSE, CA 95161-9103
PO BOX 49104, SAN JOSE, CA 95161-9104
PO BOX 49105, SAN JOSE, CA 95161-9105
PO BOX 49106, SAN JOSE, CA 95161-9106
PO BOX 49107, SAN JOSE, CA 95161-9107
PO BOX 49108, SAN JOSE, CA 95161-9108
PO BOX 49109, SAN JOSE, CA 95161-9109
PO BOX 49110, SAN JOSE, CA 95161-9110
PO BOX 49111, SAN JOSE, CA 95161-9111
PO BOX 49112, SAN JOSE, CA 95161-9112
PO BOX 49113, SAN JOSE, CA 95161-9113
PO BOX 49114, SAN JOSE, CA 95161-9114
PO BOX 49115, SAN JOSE, CA 95161-9115
PO BOX 49116, SAN JOSE, CA 95161-9116
PO BOX 49117, SAN JOSE, CA 95161-9117
PO BOX 49118, SAN JOSE, CA 95161-9118
PO BOX 49119, SAN JOSE, CA 95161-9119
PO BOX 49120, SAN JOSE, CA 95161-9120
PO BOX 49121, SAN JOSE, CA 95161-9121
PO BOX 49122, SAN JOSE, CA 95161-9122
PO BOX 49123, SAN JOSE, CA 95161-9123
PO BOX 49124, SAN JOSE, CA 95161-9124
PO BOX 49125, SAN JOSE, CA 95161-9125
PO BOX 49126, SAN JOSE, CA 95161-9126
PO BOX 49127, SAN JOSE, CA 95161-9127
PO BOX 49128, SAN JOSE, CA 95161-9128
PO BOX 49129, SAN JOSE, CA 95161-9129
PO BOX 49130, SAN JOSE, CA 95161-9130
PO BOX 49131, SAN JOSE, CA 95161-9131
PO BOX 49132, SAN JOSE, CA 95161-9132
PO BOX 49133, SAN JOSE, CA 95161-9133
PO BOX 49134, SAN JOSE, CA 95161-9134
PO BOX 49135, SAN JOSE, CA 95161-9135
PO BOX 49136, SAN JOSE, CA 95161-9136
PO BOX 49137, SAN JOSE, CA 95161-9137
PO BOX 49138, SAN JOSE, CA 95161-9138
PO BOX 49139, SAN JOSE, CA 95161-9139
PO BOX 49140, SAN JOSE, CA 95161-9140
PO BOX 49141, SAN JOSE, CA 95161-9141
PO BOX 49142, SAN JOSE, CA 95161-9142
PO BOX 49143, SAN JOSE, CA 95161-9143
PO BOX 49144, SAN JOSE, CA 95161-9144
PO BOX 49145, SAN JOSE, CA 95161-9145
PO BOX 49146, SAN JOSE, CA 95161-9146
PO BOX 49147, SAN JOSE, CA 95161-9147
PO BOX 49148, SAN JOSE, CA 95161-9148
PO BOX 49149, SAN JOSE, CA 95161-9149
PO BOX 49150, SAN JOSE, CA 95161-9150
PO BOX 49151, SAN JOSE, CA 95161-9151
PO BOX 49152, SAN JOSE, CA 95161-9152
PO BOX 49153, SAN JOSE, CA 95161-9153
PO BOX 49154, SAN JOSE, CA 95161-9154
PO BOX 49155, SAN JOSE, CA 95161-9155
PO BOX 49156, SAN JOSE, CA 95161-9156
PO BOX 49157, SAN JOSE, CA 95161-9157
PO BOX 49158, SAN JOSE, CA 95161-9158
PO BOX 49159, SAN JOSE, CA 95161-9159
PO BOX 49160, SAN JOSE, CA 95161-9160
PO BOX 49161, SAN JOSE, CA 95161-9161
PO BOX 49162, SAN JOSE, CA 95161-9162
PO BOX 49163, SAN JOSE, CA 95161-9163
PO BOX 49164, SAN JOSE, CA 95161-9164
PO BOX 49165, SAN JOSE, CA 95161-9165
PO BOX 49166, SAN JOSE, CA 95161-9166
PO BOX 49167, SAN JOSE, CA 95161-9167
PO BOX 49168, SAN JOSE, CA 95161-9168
PO BOX 49169, SAN JOSE, CA 95161-9169
PO BOX 49170, SAN JOSE, CA 95161-9170
PO BOX 49171, SAN JOSE, CA 95161-9171
PO BOX 49172, SAN JOSE, CA 95161-9172
PO BOX 49173, SAN JOSE, CA 95161-9173
PO BOX 49174, SAN JOSE, CA 95161-9174
PO BOX 49175, SAN JOSE, CA 95161-9175
PO BOX 49176, SAN JOSE, CA 95161-9176
PO BOX 49177, SAN JOSE, CA 95161-9177
PO BOX 49178, SAN JOSE, CA 95161-9178
PO BOX 49179, SAN JOSE, CA 95161-9179
PO BOX 49180, SAN JOSE, CA 95161-9180
PO BOX 49181, SAN JOSE, CA 95161-9181
PO BOX 49182, SAN JOSE, CA 95161-9182
PO BOX 49183, SAN JOSE, CA 95161-9183
PO BOX 49184, SAN JOSE, CA 95161-9184
PO BOX 49185, SAN JOSE, CA 95161-9185
PO BOX 49186, SAN JOSE, CA 95161-9186
PO BOX 49187, SAN JOSE, CA 95161-9187
PO BOX 49188, SAN JOSE, CA 95161-9188
PO BOX 49189, SAN JOSE, CA 95161-9189
PO BOX 49190, SAN JOSE, CA 95161-9190
PO BOX 49191, SAN JOSE, CA 95161-9191
PO BOX 49192, SAN JOSE, CA 95161-9192
PO BOX 49193, SAN JOSE, CA 95161-9193
PO BOX 49194, SAN JOSE, CA 95161-9194
PO BOX 49195, SAN JOSE, CA 95161-9195
PO BOX 49196, SAN JOSE, CA 95161-9196
PO BOX 49197, SAN JOSE, CA 95161-9197
PO BOX 49198, SAN JOSE, CA 95161-9198
PO BOX 49199, SAN JOSE, CA 95161-9199
PO BOX 49200, SAN JOSE, CA 95161-9200
PO BOX 49201, SAN JOSE, CA 95161-9201
PO BOX 49202, SAN JOSE, CA 95161-9202
PO BOX 49203, SAN JOSE, CA 95161-9203
PO BOX 49204, SAN JOSE, CA 95161-9204
PO BOX 49205, SAN JOSE, CA 95161-9205
PO BOX 49206, SAN JOSE, CA 95161-9206
PO BOX 49207, SAN JOSE, CA 95161-9207
PO BOX 49208, SAN JOSE, CA 95161-9208
PO BOX 49209, SAN JOSE, CA 95161-9209
PO BOX 49210, SAN JOSE, CA 95161-9210
PO BOX 49211, SAN JOSE, CA 95161-9211
PO BOX 49212, SAN JOSE, CA 95161-9212
PO BOX 49213, SAN JOSE, CA 95161-9213
PO BOX 49214, SAN JOSE, CA 95161-9214
PO BOX 49215, SAN JOSE, CA 95161-9215
PO BOX 49216, SAN JOSE, CA 95161-9216
PO BOX 49217, SAN JOSE, CA 95161-9217
PO BOX 49218, SAN JOSE, CA 95161-9218
PO BOX 49219, SAN JOSE, CA 95161-9219
PO BOX 49220, SAN JOSE, CA 95161-9220
PO BOX 49221, SAN JOSE, CA 95161-9221
PO BOX 49222, SAN JOSE, CA 95161-9222
PO BOX 49223, SAN JOSE, CA 95161-9223
PO BOX 49224, SAN JOSE, CA 95161-9224
PO BOX 49225, SAN JOSE, CA 95161-9225
PO BOX 49226, SAN JOSE, CA 95161-9226
PO BOX 49227, SAN JOSE, CA 95161-9227
PO BOX 49228, SAN JOSE, CA 95161-9228
PO BOX 49229, SAN JOSE, CA 95161-9229
PO BOX 49230, SAN JOSE, CA 95161-9230
PO BOX 49231, SAN JOSE, CA 95161-9231
PO BOX 49232, SAN JOSE, CA 95161-9232
PO BOX 49233, SAN JOSE, CA 95161-9233
PO BOX 49234, SAN JOSE, CA 95161-9234
PO BOX 49235, SAN JOSE, CA 95161-9235
PO BOX 49236, SAN JOSE, CA 95161-9236
PO BOX 49237, SAN JOSE, CA 95161-9237
PO BOX 49238, SAN JOSE, CA 95161-9238
PO BOX 49239, SAN JOSE, CA 95161-9239
PO BOX 49240, SAN JOSE, CA 95161-9240
PO BOX 49241, SAN JOSE, CA 95161-9241
PO BOX 49242, SAN JOSE, CA 95161-9242
PO BOX 49243, SAN JOSE, CA 95161-9243
PO BOX 49244, SAN JOSE, CA 95161-9244
PO BOX 49245, SAN JOSE, CA 95161-9245
PO BOX 49246, SAN JOSE, CA 95161-9246
PO BOX 49247, SAN JOSE, CA 95161-9247
PO BOX 49248, SAN JOSE, CA 95161-9248
PO BOX 49249, SAN JOSE, CA 95161-9249
PO BOX 49250, SAN JOSE, CA 95161-9250
PO BOX 49251, SAN JOSE, CA 95161-9251
PO BOX 49252, SAN JOSE, CA 95161-9252
PO BOX 49253, SAN JOSE, CA 95161-9253
PO BOX 49254, SAN JOSE, CA 95161-9254
PO BOX 49255, SAN JOSE, CA 95161-9255
PO BOX 49256, SAN JOSE, CA 95161-9256
PO BOX 49257, SAN JOSE, CA 95161-9257
PO BOX 49258, SAN JOSE, CA 95161-9258