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 6065, HICKORY, NC 28603-6065
PO BOX 6066, HICKORY, NC 28603-6066
PO BOX 6067, HICKORY, NC 28603-6067
PO BOX 6068, HICKORY, NC 28603-6068
PO BOX 6069, HICKORY, NC 28603-6069
PO BOX 6070, HICKORY, NC 28603-6070
PO BOX 6071, HICKORY, NC 28603-6071
PO BOX 6072, HICKORY, NC 28603-6072
PO BOX 6073, HICKORY, NC 28603-6073
PO BOX 6074, HICKORY, NC 28603-6074
PO BOX 6075, HICKORY, NC 28603-6075
PO BOX 6076, HICKORY, NC 28603-6076
PO BOX 6077, HICKORY, NC 28603-6077
PO BOX 6078, HICKORY, NC 28603-6078
PO BOX 6079, HICKORY, NC 28603-6079
PO BOX 6080, HICKORY, NC 28603-6080
PO BOX 6081, HICKORY, NC 28603-6081
PO BOX 6082, HICKORY, NC 28603-6082
PO BOX 6083, HICKORY, NC 28603-6083
PO BOX 6084, HICKORY, NC 28603-6084
PO BOX 6085, HICKORY, NC 28603-6085
PO BOX 6086, HICKORY, NC 28603-6086
PO BOX 6087, HICKORY, NC 28603-6087
PO BOX 6088, HICKORY, NC 28603-6088
PO BOX 6089, HICKORY, NC 28603-6089
PO BOX 6090, HICKORY, NC 28603-6090
PO BOX 6091, HICKORY, NC 28603-6091
PO BOX 6092, HICKORY, NC 28603-6092
PO BOX 6093, HICKORY, NC 28603-6093
PO BOX 6094, HICKORY, NC 28603-6094
PO BOX 6095, HICKORY, NC 28603-6095
PO BOX 6096, HICKORY, NC 28603-6096
PO BOX 6097, HICKORY, NC 28603-6097
PO BOX 6098, HICKORY, NC 28603-6098
PO BOX 6099, HICKORY, NC 28603-6099
PO BOX 6100, HICKORY, NC 28603-6100
PO BOX 6101, HICKORY, NC 28603-6101
PO BOX 6102, HICKORY, NC 28603-6102
PO BOX 6103, HICKORY, NC 28603-6103
PO BOX 6104, HICKORY, NC 28603-6104
PO BOX 6105, HICKORY, NC 28603-6105
PO BOX 6106, HICKORY, NC 28603-6106
PO BOX 6107, HICKORY, NC 28603-6107
PO BOX 6108, HICKORY, NC 28603-6108
PO BOX 6109, HICKORY, NC 28603-6109
PO BOX 6110, HICKORY, NC 28603-6110
PO BOX 6111, HICKORY, NC 28603-6111
PO BOX 6112, HICKORY, NC 28603-6112
PO BOX 6113, HICKORY, NC 28603-6113
PO BOX 6114, HICKORY, NC 28603-6114
PO BOX 6115, HICKORY, NC 28603-6115
PO BOX 6116, HICKORY, NC 28603-6116
PO BOX 6117, HICKORY, NC 28603-6117
PO BOX 6118, HICKORY, NC 28603-6118
PO BOX 6119, HICKORY, NC 28603-6119
PO BOX 6120, HICKORY, NC 28603-6120
PO BOX 6121, HICKORY, NC 28603-6121
PO BOX 6122, HICKORY, NC 28603-6122
PO BOX 6123, HICKORY, NC 28603-6123
PO BOX 6124, HICKORY, NC 28603-6124
PO BOX 6125, HICKORY, NC 28603-6125
PO BOX 6126, HICKORY, NC 28603-6126
PO BOX 6127, HICKORY, NC 28603-6127
PO BOX 6128, HICKORY, NC 28603-6128
PO BOX 6129, HICKORY, NC 28603-6129
PO BOX 6130, HICKORY, NC 28603-6130
PO BOX 6131, HICKORY, NC 28603-6131
PO BOX 6132, HICKORY, NC 28603-6132
PO BOX 6133, HICKORY, NC 28603-6133
PO BOX 6134, HICKORY, NC 28603-6134
PO BOX 6135, HICKORY, NC 28603-6135
PO BOX 6136, HICKORY, NC 28603-6136
PO BOX 6137, HICKORY, NC 28603-6137
PO BOX 6138, HICKORY, NC 28603-6138
PO BOX 6139, HICKORY, NC 28603-6139
PO BOX 6140, HICKORY, NC 28603-6140
PO BOX 6141, HICKORY, NC 28603-6141
PO BOX 6142, HICKORY, NC 28603-6142
PO BOX 6143, HICKORY, NC 28603-6143
PO BOX 6144, HICKORY, NC 28603-6144
PO BOX 6145, HICKORY, NC 28603-6145
PO BOX 6146, HICKORY, NC 28603-6146
PO BOX 6147, HICKORY, NC 28603-6147
PO BOX 6148, HICKORY, NC 28603-6148
PO BOX 6149, HICKORY, NC 28603-6149
PO BOX 6150, HICKORY, NC 28603-6150
PO BOX 6151, HICKORY, NC 28603-6151
PO BOX 6152, HICKORY, NC 28603-6152
PO BOX 6153, HICKORY, NC 28603-6153
PO BOX 6154, HICKORY, NC 28603-6154
PO BOX 6155, HICKORY, NC 28603-6155
PO BOX 6156, HICKORY, NC 28603-6156
PO BOX 6157, HICKORY, NC 28603-6157
PO BOX 6158, HICKORY, NC 28603-6158
PO BOX 6159, HICKORY, NC 28603-6159
PO BOX 6160, HICKORY, NC 28603-6160
PO BOX 6161, HICKORY, NC 28603-6161
PO BOX 6162, HICKORY, NC 28603-6162
PO BOX 6163, HICKORY, NC 28603-6163
PO BOX 6164, HICKORY, NC 28603-6164
PO BOX 6165, HICKORY, NC 28603-6165
PO BOX 6166, HICKORY, NC 28603-6166
PO BOX 6167, HICKORY, NC 28603-6167
PO BOX 6168, HICKORY, NC 28603-6168
PO BOX 6169, HICKORY, NC 28603-6169
PO BOX 6170, HICKORY, NC 28603-6170
PO BOX 6171, HICKORY, NC 28603-6171
PO BOX 6172, HICKORY, NC 28603-6172
PO BOX 6173, HICKORY, NC 28603-6173
PO BOX 6174, HICKORY, NC 28603-6174
PO BOX 6175, HICKORY, NC 28603-6175
PO BOX 6176, HICKORY, NC 28603-6176
PO BOX 6177, HICKORY, NC 28603-6177
PO BOX 6178, HICKORY, NC 28603-6178
PO BOX 6179, HICKORY, NC 28603-6179
PO BOX 6180, HICKORY, NC 28603-6180
PO BOX 6181, HICKORY, NC 28603-6181
PO BOX 6182, HICKORY, NC 28603-6182
PO BOX 6183, HICKORY, NC 28603-6183
PO BOX 6184, HICKORY, NC 28603-6184
PO BOX 6185, HICKORY, NC 28603-6185
PO BOX 6186, HICKORY, NC 28603-6186
PO BOX 6187, HICKORY, NC 28603-6187
PO BOX 6188, HICKORY, NC 28603-6188
PO BOX 6189, HICKORY, NC 28603-6189
PO BOX 6190, HICKORY, NC 28603-6190
PO BOX 6191, HICKORY, NC 28603-6191
PO BOX 6192, HICKORY, NC 28603-6192
PO BOX 6193, HICKORY, NC 28603-6193
PO BOX 6194, HICKORY, NC 28603-6194
PO BOX 6195, HICKORY, NC 28603-6195
PO BOX 6196, HICKORY, NC 28603-6196
PO BOX 6197, HICKORY, NC 28603-6197
PO BOX 6198, HICKORY, NC 28603-6198
PO BOX 6199, HICKORY, NC 28603-6199
PO BOX 6200, HICKORY, NC 28603-6200
PO BOX 6201, HICKORY, NC 28603-6201
PO BOX 6202, HICKORY, NC 28603-6202
PO BOX 6203, HICKORY, NC 28603-6203
PO BOX 6204, HICKORY, NC 28603-6204
PO BOX 6205, HICKORY, NC 28603-6205
PO BOX 6206, HICKORY, NC 28603-6206
PO BOX 6207, HICKORY, NC 28603-6207
PO BOX 6208, HICKORY, NC 28603-6208
PO BOX 6209, HICKORY, NC 28603-6209
PO BOX 6210, HICKORY, NC 28603-6210
PO BOX 6211, HICKORY, NC 28603-6211
PO BOX 6212, HICKORY, NC 28603-6212
PO BOX 6213, HICKORY, NC 28603-6213
PO BOX 6214, HICKORY, NC 28603-6214
PO BOX 6215, HICKORY, NC 28603-6215
PO BOX 6216, HICKORY, NC 28603-6216
PO BOX 6217, HICKORY, NC 28603-6217
PO BOX 6218, HICKORY, NC 28603-6218
PO BOX 6219, HICKORY, NC 28603-6219
PO BOX 6220, HICKORY, NC 28603-6220
PO BOX 6221, HICKORY, NC 28603-6221
PO BOX 6222, HICKORY, NC 28603-6222
PO BOX 6223, HICKORY, NC 28603-6223
PO BOX 6224, HICKORY, NC 28603-6224
PO BOX 6225, HICKORY, NC 28603-6225
PO BOX 6226, HICKORY, NC 28603-6226
PO BOX 6227, HICKORY, NC 28603-6227
PO BOX 6228, HICKORY, NC 28603-6228
PO BOX 6229, HICKORY, NC 28603-6229
PO BOX 6230, HICKORY, NC 28603-6230
PO BOX 6231, HICKORY, NC 28603-6231
PO BOX 6232, HICKORY, NC 28603-6232
PO BOX 6233, HICKORY, NC 28603-6233
PO BOX 6234, HICKORY, NC 28603-6234
PO BOX 6235, HICKORY, NC 28603-6235
PO BOX 6236, HICKORY, NC 28603-6236
PO BOX 6237, HICKORY, NC 28603-6237
PO BOX 6238, HICKORY, NC 28603-6238
PO BOX 6239, HICKORY, NC 28603-6239
PO BOX 6240, HICKORY, NC 28603-6240
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