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 61, DUNN, NC 28335-0061
PO BOX 62, DUNN, NC 28335-0062
PO BOX 63, DUNN, NC 28335-0063
PO BOX 64, DUNN, NC 28335-0064
PO BOX 65, DUNN, NC 28335-0065
PO BOX 66, DUNN, NC 28335-0066
PO BOX 67, DUNN, NC 28335-0067
PO BOX 68, DUNN, NC 28335-0068
PO BOX 69, DUNN, NC 28335-0069
PO BOX 70, DUNN, NC 28335-0070
PO BOX 71, DUNN, NC 28335-0071
PO BOX 72, DUNN, NC 28335-0072
PO BOX 73, DUNN, NC 28335-0073
PO BOX 74, DUNN, NC 28335-0074
PO BOX 75, DUNN, NC 28335-0075
PO BOX 76, DUNN, NC 28335-0076
PO BOX 77, DUNN, NC 28335-0077
PO BOX 78, DUNN, NC 28335-0078
PO BOX 79, DUNN, NC 28335-0079
PO BOX 80, DUNN, NC 28335-0080
PO BOX 81, DUNN, NC 28335-0081
PO BOX 82, DUNN, NC 28335-0082
PO BOX 83, DUNN, NC 28335-0083
PO BOX 84, DUNN, NC 28335-0084
PO BOX 85, DUNN, NC 28335-0085
PO BOX 86, DUNN, NC 28335-0086
PO BOX 87, DUNN, NC 28335-0087
PO BOX 88, DUNN, NC 28335-0088
PO BOX 89, DUNN, NC 28335-0089
PO BOX 90, DUNN, NC 28335-0090
PO BOX 91, DUNN, NC 28335-0091
PO BOX 92, DUNN, NC 28335-0092
PO BOX 93, DUNN, NC 28335-0093
PO BOX 94, DUNN, NC 28335-0094
PO BOX 95, DUNN, NC 28335-0095
PO BOX 96, DUNN, NC 28335-0096
PO BOX 97, DUNN, NC 28335-0097
PO BOX 98, DUNN, NC 28335-0098
PO BOX 99, DUNN, NC 28335-0099
PO BOX 100, DUNN, NC 28335-0100
PO BOX 101, DUNN, NC 28335-0101
PO BOX 102, DUNN, NC 28335-0102
PO BOX 103, DUNN, NC 28335-0103
PO BOX 104, DUNN, NC 28335-0104
PO BOX 105, DUNN, NC 28335-0105
PO BOX 106, DUNN, NC 28335-0106
PO BOX 107, DUNN, NC 28335-0107
PO BOX 108, DUNN, NC 28335-0108
PO BOX 109, DUNN, NC 28335-0109
PO BOX 110, DUNN, NC 28335-0110
PO BOX 111, DUNN, NC 28335-0111
PO BOX 112, DUNN, NC 28335-0112
PO BOX 113, DUNN, NC 28335-0113
PO BOX 114, DUNN, NC 28335-0114
PO BOX 115, DUNN, NC 28335-0115
PO BOX 116, DUNN, NC 28335-0116
PO BOX 117, DUNN, NC 28335-0117
PO BOX 118, DUNN, NC 28335-0118
PO BOX 119, DUNN, NC 28335-0119
PO BOX 120, DUNN, NC 28335-0120
PO BOX 121, DUNN, NC 28335-0121
PO BOX 122, DUNN, NC 28335-0122
PO BOX 123, DUNN, NC 28335-0123
PO BOX 124, DUNN, NC 28335-0124
PO BOX 125, DUNN, NC 28335-0125
PO BOX 126, DUNN, NC 28335-0126
PO BOX 127, DUNN, NC 28335-0127
PO BOX 128, DUNN, NC 28335-0128
PO BOX 129, DUNN, NC 28335-0129
PO BOX 130, DUNN, NC 28335-0130
PO BOX 131, DUNN, NC 28335-0131
PO BOX 132, DUNN, NC 28335-0132
PO BOX 133, DUNN, NC 28335-0133
PO BOX 134, DUNN, NC 28335-0134
PO BOX 135, DUNN, NC 28335-0135
PO BOX 136, DUNN, NC 28335-0136
PO BOX 137, DUNN, NC 28335-0137
PO BOX 138, DUNN, NC 28335-0138
PO BOX 139, DUNN, NC 28335-0139
PO BOX 140, DUNN, NC 28335-0140
PO BOX 141, DUNN, NC 28335-0141
PO BOX 142, DUNN, NC 28335-0142
PO BOX 143, DUNN, NC 28335-0143
PO BOX 144, DUNN, NC 28335-0144
PO BOX 145, DUNN, NC 28335-0145
PO BOX 146, DUNN, NC 28335-0146
PO BOX 147, DUNN, NC 28335-0147
PO BOX 148, DUNN, NC 28335-0148
PO BOX 149, DUNN, NC 28335-0149
PO BOX 150, DUNN, NC 28335-0150
PO BOX 151, DUNN, NC 28335-0151
PO BOX 152, DUNN, NC 28335-0152
PO BOX 153, DUNN, NC 28335-0153
PO BOX 154, DUNN, NC 28335-0154
PO BOX 155, DUNN, NC 28335-0155
PO BOX 156, DUNN, NC 28335-0156
PO BOX 157, DUNN, NC 28335-0157
PO BOX 158, DUNN, NC 28335-0158
PO BOX 159, DUNN, NC 28335-0159
PO BOX 160, DUNN, NC 28335-0160
PO BOX 161, DUNN, NC 28335-0161
PO BOX 162, DUNN, NC 28335-0162
PO BOX 163, DUNN, NC 28335-0163
PO BOX 164, DUNN, NC 28335-0164
PO BOX 165, DUNN, NC 28335-0165
PO BOX 166, DUNN, NC 28335-0166
PO BOX 167, DUNN, NC 28335-0167
PO BOX 168, DUNN, NC 28335-0168
PO BOX 169, DUNN, NC 28335-0169
PO BOX 170, DUNN, NC 28335-0170
PO BOX 171, DUNN, NC 28335-0171
PO BOX 172, DUNN, NC 28335-0172
PO BOX 173, DUNN, NC 28335-0173
PO BOX 174, DUNN, NC 28335-0174
PO BOX 175, DUNN, NC 28335-0175
PO BOX 176, DUNN, NC 28335-0176
PO BOX 177, DUNN, NC 28335-0177
PO BOX 178, DUNN, NC 28335-0178
PO BOX 179, DUNN, NC 28335-0179
PO BOX 180, DUNN, NC 28335-0180
PO BOX 181, DUNN, NC 28335-0181
PO BOX 182, DUNN, NC 28335-0182
PO BOX 183, DUNN, NC 28335-0183
PO BOX 184, DUNN, NC 28335-0184
PO BOX 185, DUNN, NC 28335-0185
PO BOX 186, DUNN, NC 28335-0186
PO BOX 187, DUNN, NC 28335-0187
PO BOX 188, DUNN, NC 28335-0188
PO BOX 189, DUNN, NC 28335-0189
PO BOX 190, DUNN, NC 28335-0190
PO BOX 191, DUNN, NC 28335-0191
PO BOX 192, DUNN, NC 28335-0192
PO BOX 193, DUNN, NC 28335-0193
PO BOX 194, DUNN, NC 28335-0194
PO BOX 195, DUNN, NC 28335-0195
PO BOX 196, DUNN, NC 28335-0196
PO BOX 197, DUNN, NC 28335-0197
PO BOX 198, DUNN, NC 28335-0198
PO BOX 199, DUNN, NC 28335-0199
PO BOX 200, DUNN, NC 28335-0200
PO BOX 201, DUNN, NC 28335-0201
PO BOX 202, DUNN, NC 28335-0202
PO BOX 203, DUNN, NC 28335-0203
PO BOX 204, DUNN, NC 28335-0204
PO BOX 205, DUNN, NC 28335-0205
PO BOX 206, DUNN, NC 28335-0206
PO BOX 207, DUNN, NC 28335-0207
PO BOX 208, DUNN, NC 28335-0208
PO BOX 209, DUNN, NC 28335-0209
PO BOX 210, DUNN, NC 28335-0210
PO BOX 211, DUNN, NC 28335-0211
PO BOX 212, DUNN, NC 28335-0212
PO BOX 213, DUNN, NC 28335-0213
PO BOX 214, DUNN, NC 28335-0214
PO BOX 215, DUNN, NC 28335-0215
PO BOX 216, DUNN, NC 28335-0216
PO BOX 217, DUNN, NC 28335-0217
PO BOX 218, DUNN, NC 28335-0218
PO BOX 219, DUNN, NC 28335-0219
PO BOX 220, DUNN, NC 28335-0220
PO BOX 221, DUNN, NC 28335-0221
PO BOX 222, DUNN, NC 28335-0222
PO BOX 223, DUNN, NC 28335-0223
PO BOX 224, DUNN, NC 28335-0224
PO BOX 225, DUNN, NC 28335-0225
PO BOX 226, DUNN, NC 28335-0226
PO BOX 227, DUNN, NC 28335-0227
PO BOX 228, DUNN, NC 28335-0228
PO BOX 229, DUNN, NC 28335-0229
PO BOX 230, DUNN, NC 28335-0230
PO BOX 231, DUNN, NC 28335-0231
PO BOX 232, DUNN, NC 28335-0232
PO BOX 233, DUNN, NC 28335-0233
PO BOX 234, DUNN, NC 28335-0234
PO BOX 235, DUNN, NC 28335-0235
PO BOX 236, DUNN, NC 28335-0236
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