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 51, AFTON, OK 74331-0051
PO BOX 52, AFTON, OK 74331-0052
PO BOX 53, AFTON, OK 74331-0053
PO BOX 54, AFTON, OK 74331-0054
PO BOX 55, AFTON, OK 74331-0055
PO BOX 56, AFTON, OK 74331-0056
PO BOX 57, AFTON, OK 74331-0057
PO BOX 58, AFTON, OK 74331-0058
PO BOX 59, AFTON, OK 74331-0059
PO BOX 60, AFTON, OK 74331-0060
PO BOX 61, AFTON, OK 74331-0061
PO BOX 62, AFTON, OK 74331-0062
PO BOX 63, AFTON, OK 74331-0063
PO BOX 64, AFTON, OK 74331-0064
PO BOX 65, AFTON, OK 74331-0065
PO BOX 66, AFTON, OK 74331-0066
PO BOX 67, AFTON, OK 74331-0067
PO BOX 68, AFTON, OK 74331-0068
PO BOX 69, AFTON, OK 74331-0069
PO BOX 70, AFTON, OK 74331-0070
PO BOX 71, AFTON, OK 74331-0071
PO BOX 72, AFTON, OK 74331-0072
PO BOX 73, AFTON, OK 74331-0073
PO BOX 74, AFTON, OK 74331-0074
PO BOX 75, AFTON, OK 74331-0075
PO BOX 76, AFTON, OK 74331-0076
PO BOX 77, AFTON, OK 74331-0077
PO BOX 78, AFTON, OK 74331-0078
PO BOX 79, AFTON, OK 74331-0079
PO BOX 80, AFTON, OK 74331-0080
PO BOX 81, AFTON, OK 74331-0081
PO BOX 82, AFTON, OK 74331-0082
PO BOX 83, AFTON, OK 74331-0083
PO BOX 84, AFTON, OK 74331-0084
PO BOX 85, AFTON, OK 74331-0085
PO BOX 86, AFTON, OK 74331-0086
PO BOX 87, AFTON, OK 74331-0087
PO BOX 88, AFTON, OK 74331-0088
PO BOX 89, AFTON, OK 74331-0089
PO BOX 90, AFTON, OK 74331-0090
PO BOX 91, AFTON, OK 74331-0091
PO BOX 92, AFTON, OK 74331-0092
PO BOX 93, AFTON, OK 74331-0093
PO BOX 94, AFTON, OK 74331-0094
PO BOX 95, AFTON, OK 74331-0095
PO BOX 96, AFTON, OK 74331-0096
PO BOX 97, AFTON, OK 74331-0097
PO BOX 98, AFTON, OK 74331-0098
PO BOX 99, AFTON, OK 74331-0099
PO BOX 100, AFTON, OK 74331-0100
PO BOX 101, AFTON, OK 74331-0101
PO BOX 102, AFTON, OK 74331-0102
PO BOX 103, AFTON, OK 74331-0103
PO BOX 104, AFTON, OK 74331-0104
PO BOX 105, AFTON, OK 74331-0105
PO BOX 106, AFTON, OK 74331-0106
PO BOX 107, AFTON, OK 74331-0107
PO BOX 108, AFTON, OK 74331-0108
PO BOX 109, AFTON, OK 74331-0109
PO BOX 110, AFTON, OK 74331-0110
PO BOX 111, AFTON, OK 74331-0111
PO BOX 112, AFTON, OK 74331-0112
PO BOX 113, AFTON, OK 74331-0113
PO BOX 114, AFTON, OK 74331-0114
PO BOX 115, AFTON, OK 74331-0115
PO BOX 116, AFTON, OK 74331-0116
PO BOX 117, AFTON, OK 74331-0117
PO BOX 118, AFTON, OK 74331-0118
PO BOX 119, AFTON, OK 74331-0119
PO BOX 120, AFTON, OK 74331-0120
PO BOX 121, AFTON, OK 74331-0121
PO BOX 122, AFTON, OK 74331-0122
PO BOX 123, AFTON, OK 74331-0123
PO BOX 124, AFTON, OK 74331-0124
PO BOX 125, AFTON, OK 74331-0125
PO BOX 126, AFTON, OK 74331-0126
PO BOX 127, AFTON, OK 74331-0127
PO BOX 128, AFTON, OK 74331-0128
PO BOX 129, AFTON, OK 74331-0129
PO BOX 130, AFTON, OK 74331-0130
PO BOX 131, AFTON, OK 74331-0131
PO BOX 132, AFTON, OK 74331-0132
PO BOX 133, AFTON, OK 74331-0133
PO BOX 134, AFTON, OK 74331-0134
PO BOX 135, AFTON, OK 74331-0135
PO BOX 136, AFTON, OK 74331-0136
PO BOX 137, AFTON, OK 74331-0137
PO BOX 138, AFTON, OK 74331-0138
PO BOX 139, AFTON, OK 74331-0139
PO BOX 140, AFTON, OK 74331-0140
PO BOX 141, AFTON, OK 74331-0141
PO BOX 142, AFTON, OK 74331-0142
PO BOX 143, AFTON, OK 74331-0143
PO BOX 144, AFTON, OK 74331-0144
PO BOX 145, AFTON, OK 74331-0145
PO BOX 146, AFTON, OK 74331-0146
PO BOX 147, AFTON, OK 74331-0147
PO BOX 148, AFTON, OK 74331-0148
PO BOX 149, AFTON, OK 74331-0149
PO BOX 150, AFTON, OK 74331-0150
PO BOX 151, AFTON, OK 74331-0151
PO BOX 152, AFTON, OK 74331-0152
PO BOX 153, AFTON, OK 74331-0153
PO BOX 154, AFTON, OK 74331-0154
PO BOX 155, AFTON, OK 74331-0155
PO BOX 156, AFTON, OK 74331-0156
PO BOX 157, AFTON, OK 74331-0157
PO BOX 158, AFTON, OK 74331-0158
PO BOX 159, AFTON, OK 74331-0159
PO BOX 160, AFTON, OK 74331-0160
PO BOX 161, AFTON, OK 74331-0161
PO BOX 162, AFTON, OK 74331-0162
PO BOX 163, AFTON, OK 74331-0163
PO BOX 164, AFTON, OK 74331-0164
PO BOX 165, AFTON, OK 74331-0165
PO BOX 166, AFTON, OK 74331-0166
PO BOX 167, AFTON, OK 74331-0167
PO BOX 168, AFTON, OK 74331-0168
PO BOX 169, AFTON, OK 74331-0169
PO BOX 170, AFTON, OK 74331-0170
PO BOX 171, AFTON, OK 74331-0171
PO BOX 172, AFTON, OK 74331-0172
PO BOX 173, AFTON, OK 74331-0173
PO BOX 174, AFTON, OK 74331-0174
PO BOX 175, AFTON, OK 74331-0175
PO BOX 176, AFTON, OK 74331-0176
PO BOX 177, AFTON, OK 74331-0177
PO BOX 178, AFTON, OK 74331-0178
PO BOX 179, AFTON, OK 74331-0179
PO BOX 180, AFTON, OK 74331-0180
PO BOX 181, AFTON, OK 74331-0181
PO BOX 182, AFTON, OK 74331-0182
PO BOX 183, AFTON, OK 74331-0183
PO BOX 184, AFTON, OK 74331-0184
PO BOX 185, AFTON, OK 74331-0185
PO BOX 186, AFTON, OK 74331-0186
PO BOX 187, AFTON, OK 74331-0187
PO BOX 188, AFTON, OK 74331-0188
PO BOX 189, AFTON, OK 74331-0189
PO BOX 190, AFTON, OK 74331-0190
PO BOX 191, AFTON, OK 74331-0191
PO BOX 192, AFTON, OK 74331-0192
PO BOX 193, AFTON, OK 74331-0193
PO BOX 194, AFTON, OK 74331-0194
PO BOX 195, AFTON, OK 74331-0195
PO BOX 196, AFTON, OK 74331-0196
PO BOX 197, AFTON, OK 74331-0197
PO BOX 198, AFTON, OK 74331-0198
PO BOX 199, AFTON, OK 74331-0199
PO BOX 200, AFTON, OK 74331-0200
PO BOX 201, AFTON, OK 74331-0201
PO BOX 202, AFTON, OK 74331-0202
PO BOX 203, AFTON, OK 74331-0203
PO BOX 204, AFTON, OK 74331-0204
PO BOX 205, AFTON, OK 74331-0205
PO BOX 206, AFTON, OK 74331-0206
PO BOX 207, AFTON, OK 74331-0207
PO BOX 208, AFTON, OK 74331-0208
PO BOX 209, AFTON, OK 74331-0209
PO BOX 210, AFTON, OK 74331-0210
PO BOX 211, AFTON, OK 74331-0211
PO BOX 212, AFTON, OK 74331-0212
PO BOX 213, AFTON, OK 74331-0213
PO BOX 214, AFTON, OK 74331-0214
PO BOX 215, AFTON, OK 74331-0215
PO BOX 216, AFTON, OK 74331-0216
PO BOX 217, AFTON, OK 74331-0217
PO BOX 218, AFTON, OK 74331-0218
PO BOX 219, AFTON, OK 74331-0219
PO BOX 220, AFTON, OK 74331-0220
PO BOX 221, AFTON, OK 74331-0221
PO BOX 222, AFTON, OK 74331-0222
PO BOX 223, AFTON, OK 74331-0223
PO BOX 224, AFTON, OK 74331-0224
PO BOX 225, AFTON, OK 74331-0225
PO BOX 226, AFTON, OK 74331-0226
PO BOX 227, AFTON, OK 74331-0227
PO BOX 228, AFTON, OK 74331-0228
PO BOX 229, AFTON, OK 74331-0229
PO BOX 230, AFTON, OK 74331-0230
PO BOX 231, AFTON, OK 74331-0231
PO BOX 232, AFTON, OK 74331-0232
PO BOX 233, AFTON, OK 74331-0233
PO BOX 234, AFTON, OK 74331-0234
PO BOX 235, AFTON, OK 74331-0235
PO BOX 236, AFTON, OK 74331-0236
PO BOX 237, AFTON, OK 74331-0237
PO BOX 238, AFTON, OK 74331-0238
PO BOX 239, AFTON, OK 74331-0239
PO BOX 240, AFTON, OK 74331-0240
PO BOX 241, AFTON, OK 74331-0241
PO BOX 242, AFTON, OK 74331-0242
PO BOX 243, AFTON, OK 74331-0243
PO BOX 244, AFTON, OK 74331-0244
PO BOX 245, AFTON, OK 74331-0245
PO BOX 246, AFTON, OK 74331-0246
PO BOX 247, AFTON, OK 74331-0247
PO BOX 248, AFTON, OK 74331-0248
PO BOX 249, AFTON, OK 74331-0249
PO BOX 250, AFTON, OK 74331-0250
PO BOX 251, AFTON, OK 74331-0251