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 81, KINGSPORT, TN 37662-0081
PO BOX 82, KINGSPORT, TN 37662-0082
PO BOX 83, KINGSPORT, TN 37662-0083
PO BOX 84, KINGSPORT, TN 37662-0084
PO BOX 85, KINGSPORT, TN 37662-0085
PO BOX 86, KINGSPORT, TN 37662-0086
PO BOX 87, KINGSPORT, TN 37662-0087
PO BOX 88, KINGSPORT, TN 37662-0088
PO BOX 89, KINGSPORT, TN 37662-0089
PO BOX 90, KINGSPORT, TN 37662-0090
PO BOX 91, KINGSPORT, TN 37662-0091
PO BOX 92, KINGSPORT, TN 37662-0092
PO BOX 93, KINGSPORT, TN 37662-0093
PO BOX 94, KINGSPORT, TN 37662-0094
PO BOX 95, KINGSPORT, TN 37662-0095
PO BOX 96, KINGSPORT, TN 37662-0096
PO BOX 97, KINGSPORT, TN 37662-0097
PO BOX 98, KINGSPORT, TN 37662-0098
PO BOX 99, KINGSPORT, TN 37662-0099
PO BOX 100, KINGSPORT, TN 37662-0100
PO BOX 101, KINGSPORT, TN 37662-0101
PO BOX 102, KINGSPORT, TN 37662-0102
PO BOX 103, KINGSPORT, TN 37662-0103
PO BOX 104, KINGSPORT, TN 37662-0104
PO BOX 105, KINGSPORT, TN 37662-0105
PO BOX 106, KINGSPORT, TN 37662-0106
PO BOX 107, KINGSPORT, TN 37662-0107
PO BOX 108, KINGSPORT, TN 37662-0108
PO BOX 109, KINGSPORT, TN 37662-0109
PO BOX 110, KINGSPORT, TN 37662-0110
PO BOX 111, KINGSPORT, TN 37662-0111
PO BOX 112, KINGSPORT, TN 37662-0112
PO BOX 113, KINGSPORT, TN 37662-0113
PO BOX 114, KINGSPORT, TN 37662-0114
PO BOX 115, KINGSPORT, TN 37662-0115
PO BOX 116, KINGSPORT, TN 37662-0116
PO BOX 117, KINGSPORT, TN 37662-0117
PO BOX 118, KINGSPORT, TN 37662-0118
PO BOX 119, KINGSPORT, TN 37662-0119
PO BOX 120, KINGSPORT, TN 37662-0120
PO BOX 121, KINGSPORT, TN 37662-0121
PO BOX 122, KINGSPORT, TN 37662-0122
PO BOX 123, KINGSPORT, TN 37662-0123
PO BOX 124, KINGSPORT, TN 37662-0124
PO BOX 125, KINGSPORT, TN 37662-0125
PO BOX 126, KINGSPORT, TN 37662-0126
PO BOX 127, KINGSPORT, TN 37662-0127
PO BOX 128, KINGSPORT, TN 37662-0128
PO BOX 129, KINGSPORT, TN 37662-0129
PO BOX 130, KINGSPORT, TN 37662-0130
PO BOX 131, KINGSPORT, TN 37662-0131
PO BOX 132, KINGSPORT, TN 37662-0132
PO BOX 133, KINGSPORT, TN 37662-0133
PO BOX 134, KINGSPORT, TN 37662-0134
PO BOX 135, KINGSPORT, TN 37662-0135
PO BOX 136, KINGSPORT, TN 37662-0136
PO BOX 137, KINGSPORT, TN 37662-0137
PO BOX 138, KINGSPORT, TN 37662-0138
PO BOX 139, KINGSPORT, TN 37662-0139
PO BOX 140, KINGSPORT, TN 37662-0140
PO BOX 141, KINGSPORT, TN 37662-0141
PO BOX 142, KINGSPORT, TN 37662-0142
PO BOX 143, KINGSPORT, TN 37662-0143
PO BOX 144, KINGSPORT, TN 37662-0144
PO BOX 145, KINGSPORT, TN 37662-0145
PO BOX 146, KINGSPORT, TN 37662-0146
PO BOX 147, KINGSPORT, TN 37662-0147
PO BOX 148, KINGSPORT, TN 37662-0148
PO BOX 149, KINGSPORT, TN 37662-0149
PO BOX 150, KINGSPORT, TN 37662-0150
PO BOX 151, KINGSPORT, TN 37662-0151
PO BOX 152, KINGSPORT, TN 37662-0152
PO BOX 153, KINGSPORT, TN 37662-0153
PO BOX 154, KINGSPORT, TN 37662-0154
PO BOX 155, KINGSPORT, TN 37662-0155
PO BOX 156, KINGSPORT, TN 37662-0156
PO BOX 157, KINGSPORT, TN 37662-0157
PO BOX 158, KINGSPORT, TN 37662-0158
PO BOX 159, KINGSPORT, TN 37662-0159
PO BOX 160, KINGSPORT, TN 37662-0160
PO BOX 161, KINGSPORT, TN 37662-0161
PO BOX 162, KINGSPORT, TN 37662-0162
PO BOX 163, KINGSPORT, TN 37662-0163
PO BOX 164, KINGSPORT, TN 37662-0164
PO BOX 165, KINGSPORT, TN 37662-0165
PO BOX 166, KINGSPORT, TN 37662-0166
PO BOX 167, KINGSPORT, TN 37662-0167
PO BOX 168, KINGSPORT, TN 37662-0168
PO BOX 169, KINGSPORT, TN 37662-0169
PO BOX 170, KINGSPORT, TN 37662-0170
PO BOX 171, KINGSPORT, TN 37662-0171
PO BOX 172, KINGSPORT, TN 37662-0172
PO BOX 173, KINGSPORT, TN 37662-0173
PO BOX 174, KINGSPORT, TN 37662-0174
PO BOX 175, KINGSPORT, TN 37662-0175
PO BOX 176, KINGSPORT, TN 37662-0176
PO BOX 177, KINGSPORT, TN 37662-0177
PO BOX 178, KINGSPORT, TN 37662-0178
PO BOX 179, KINGSPORT, TN 37662-0179
PO BOX 180, KINGSPORT, TN 37662-0180
PO BOX 181, KINGSPORT, TN 37662-0181
PO BOX 182, KINGSPORT, TN 37662-0182
PO BOX 183, KINGSPORT, TN 37662-0183
PO BOX 184, KINGSPORT, TN 37662-0184
PO BOX 185, KINGSPORT, TN 37662-0185
PO BOX 186, KINGSPORT, TN 37662-0186
PO BOX 187, KINGSPORT, TN 37662-0187
PO BOX 188, KINGSPORT, TN 37662-0188
PO BOX 189, KINGSPORT, TN 37662-0189
PO BOX 190, KINGSPORT, TN 37662-0190
PO BOX 191, KINGSPORT, TN 37662-0191
PO BOX 192, KINGSPORT, TN 37662-0192
PO BOX 193, KINGSPORT, TN 37662-0193
PO BOX 194, KINGSPORT, TN 37662-0194
PO BOX 195, KINGSPORT, TN 37662-0195
PO BOX 196, KINGSPORT, TN 37662-0196
PO BOX 197, KINGSPORT, TN 37662-0197
PO BOX 198, KINGSPORT, TN 37662-0198
PO BOX 199, KINGSPORT, TN 37662-0199
PO BOX 200, KINGSPORT, TN 37662-0200
PO BOX 201, KINGSPORT, TN 37662-0201
PO BOX 202, KINGSPORT, TN 37662-0202
PO BOX 203, KINGSPORT, TN 37662-0203
PO BOX 204, KINGSPORT, TN 37662-0204
PO BOX 205, KINGSPORT, TN 37662-0205
PO BOX 206, KINGSPORT, TN 37662-0206
PO BOX 207, KINGSPORT, TN 37662-0207
PO BOX 208, KINGSPORT, TN 37662-0208
PO BOX 209, KINGSPORT, TN 37662-0209
PO BOX 210, KINGSPORT, TN 37662-0210
PO BOX 211, KINGSPORT, TN 37662-0211
PO BOX 212, KINGSPORT, TN 37662-0212
PO BOX 213, KINGSPORT, TN 37662-0213
PO BOX 214, KINGSPORT, TN 37662-0214
PO BOX 215, KINGSPORT, TN 37662-0215
PO BOX 216, KINGSPORT, TN 37662-0216
PO BOX 217, KINGSPORT, TN 37662-0217
PO BOX 218, KINGSPORT, TN 37662-0218
PO BOX 219, KINGSPORT, TN 37662-0219
PO BOX 220, KINGSPORT, TN 37662-0220
PO BOX 221, KINGSPORT, TN 37662-0221
PO BOX 222, KINGSPORT, TN 37662-0222
PO BOX 223, KINGSPORT, TN 37662-0223
PO BOX 224, KINGSPORT, TN 37662-0224
PO BOX 225, KINGSPORT, TN 37662-0225
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