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 280011, KANSAS CITY, MO 64128-0011
PO BOX 280012, KANSAS CITY, MO 64128-0012
PO BOX 280013, KANSAS CITY, MO 64128-0013
PO BOX 280014, KANSAS CITY, MO 64128-0014
PO BOX 280015, KANSAS CITY, MO 64128-0015
PO BOX 280016, KANSAS CITY, MO 64128-0016
PO BOX 280017, KANSAS CITY, MO 64128-0017
PO BOX 280018, KANSAS CITY, MO 64128-0018
PO BOX 280019, KANSAS CITY, MO 64128-0019
PO BOX 280020, KANSAS CITY, MO 64128-0020
PO BOX 280021, KANSAS CITY, MO 64128-0021
PO BOX 280022, KANSAS CITY, MO 64128-0022
PO BOX 280023, KANSAS CITY, MO 64128-0023
PO BOX 280024, KANSAS CITY, MO 64128-0024
PO BOX 280025, KANSAS CITY, MO 64128-0025
PO BOX 280026, KANSAS CITY, MO 64128-0026
PO BOX 280027, KANSAS CITY, MO 64128-0027
PO BOX 280028, KANSAS CITY, MO 64128-0028
PO BOX 280029, KANSAS CITY, MO 64128-0029
PO BOX 280030, KANSAS CITY, MO 64128-0030
PO BOX 280031, KANSAS CITY, MO 64128-0031
PO BOX 280032, KANSAS CITY, MO 64128-0032
PO BOX 280033, KANSAS CITY, MO 64128-0033
PO BOX 280034, KANSAS CITY, MO 64128-0034
PO BOX 280035, KANSAS CITY, MO 64128-0035
PO BOX 280036, KANSAS CITY, MO 64128-0036
PO BOX 280037, KANSAS CITY, MO 64128-0037
PO BOX 280038, KANSAS CITY, MO 64128-0038
PO BOX 280039, KANSAS CITY, MO 64128-0039
PO BOX 280040, KANSAS CITY, MO 64128-0040
PO BOX 280041, KANSAS CITY, MO 64128-0041
PO BOX 280042, KANSAS CITY, MO 64128-0042
PO BOX 280043, KANSAS CITY, MO 64128-0043
PO BOX 280044, KANSAS CITY, MO 64128-0044
PO BOX 280045, KANSAS CITY, MO 64128-0045
PO BOX 280046, KANSAS CITY, MO 64128-0046
PO BOX 280047, KANSAS CITY, MO 64128-0047
PO BOX 280048, KANSAS CITY, MO 64128-0048
PO BOX 280049, KANSAS CITY, MO 64128-0049
PO BOX 280050, KANSAS CITY, MO 64128-0050
PO BOX 280051, KANSAS CITY, MO 64128-0051
PO BOX 280052, KANSAS CITY, MO 64128-0052
PO BOX 280053, KANSAS CITY, MO 64128-0053
PO BOX 280054, KANSAS CITY, MO 64128-0054
PO BOX 280055, KANSAS CITY, MO 64128-0055
PO BOX 280056, KANSAS CITY, MO 64128-0056
PO BOX 280057, KANSAS CITY, MO 64128-0057
PO BOX 280058, KANSAS CITY, MO 64128-0058
PO BOX 280059, KANSAS CITY, MO 64128-0059
PO BOX 280060, KANSAS CITY, MO 64128-0060
PO BOX 280061, KANSAS CITY, MO 64128-0061
PO BOX 280062, KANSAS CITY, MO 64128-0062
PO BOX 280063, KANSAS CITY, MO 64128-0063
PO BOX 280064, KANSAS CITY, MO 64128-0064
PO BOX 280065, KANSAS CITY, MO 64128-0065
PO BOX 280066, KANSAS CITY, MO 64128-0066
PO BOX 280067, KANSAS CITY, MO 64128-0067
PO BOX 280068, KANSAS CITY, MO 64128-0068
PO BOX 280069, KANSAS CITY, MO 64128-0069
PO BOX 280070, KANSAS CITY, MO 64128-0070
PO BOX 280071, KANSAS CITY, MO 64128-0071
PO BOX 280072, KANSAS CITY, MO 64128-0072
PO BOX 280073, KANSAS CITY, MO 64128-0073
PO BOX 280074, KANSAS CITY, MO 64128-0074
PO BOX 280075, KANSAS CITY, MO 64128-0075
PO BOX 280076, KANSAS CITY, MO 64128-0076
PO BOX 280077, KANSAS CITY, MO 64128-0077
PO BOX 280078, KANSAS CITY, MO 64128-0078
PO BOX 280079, KANSAS CITY, MO 64128-0079
PO BOX 280080, KANSAS CITY, MO 64128-0080
PO BOX 280081, KANSAS CITY, MO 64128-0081
PO BOX 280082, KANSAS CITY, MO 64128-0082
PO BOX 280083, KANSAS CITY, MO 64128-0083
PO BOX 280084, KANSAS CITY, MO 64128-0084
PO BOX 280085, KANSAS CITY, MO 64128-0085
PO BOX 280086, KANSAS CITY, MO 64128-0086
PO BOX 280087, KANSAS CITY, MO 64128-0087
PO BOX 280088, KANSAS CITY, MO 64128-0088
PO BOX 280089, KANSAS CITY, MO 64128-0089
PO BOX 280090, KANSAS CITY, MO 64128-0090
PO BOX 280091, KANSAS CITY, MO 64128-0091
PO BOX 280092, KANSAS CITY, MO 64128-0092
PO BOX 280093, KANSAS CITY, MO 64128-0093
PO BOX 280094, KANSAS CITY, MO 64128-0094
PO BOX 280095, KANSAS CITY, MO 64128-0095
PO BOX 280096, KANSAS CITY, MO 64128-0096
PO BOX 280097, KANSAS CITY, MO 64128-0097
PO BOX 280098, KANSAS CITY, MO 64128-0098
PO BOX 280099, KANSAS CITY, MO 64128-0099
PO BOX 280100, KANSAS CITY, MO 64128-0100
PO BOX 280101, KANSAS CITY, MO 64128-0101
PO BOX 280102, KANSAS CITY, MO 64128-0102
PO BOX 280103, KANSAS CITY, MO 64128-0103
PO BOX 280104, KANSAS CITY, MO 64128-0104
PO BOX 280105, KANSAS CITY, MO 64128-0105
PO BOX 280106, KANSAS CITY, MO 64128-0106
PO BOX 280107, KANSAS CITY, MO 64128-0107
PO BOX 280108, KANSAS CITY, MO 64128-0108
PO BOX 280109, KANSAS CITY, MO 64128-0109
PO BOX 280110, KANSAS CITY, MO 64128-0110
PO BOX 280111, KANSAS CITY, MO 64128-0111
PO BOX 280112, KANSAS CITY, MO 64128-0112
PO BOX 280113, KANSAS CITY, MO 64128-0113
PO BOX 280114, KANSAS CITY, MO 64128-0114
PO BOX 280115, KANSAS CITY, MO 64128-0115
PO BOX 280116, KANSAS CITY, MO 64128-0116
PO BOX 280117, KANSAS CITY, MO 64128-0117
PO BOX 280118, KANSAS CITY, MO 64128-0118
PO BOX 280119, KANSAS CITY, MO 64128-0119
PO BOX 280120, KANSAS CITY, MO 64128-0120
PO BOX 280121, KANSAS CITY, MO 64128-0121
PO BOX 280122, KANSAS CITY, MO 64128-0122
PO BOX 280123, KANSAS CITY, MO 64128-0123
PO BOX 280124, KANSAS CITY, MO 64128-0124
PO BOX 280125, KANSAS CITY, MO 64128-0125
PO BOX 280126, KANSAS CITY, MO 64128-0126
PO BOX 280127, KANSAS CITY, MO 64128-0127
PO BOX 280128, KANSAS CITY, MO 64128-0128
PO BOX 280129, KANSAS CITY, MO 64128-0129
PO BOX 280130, KANSAS CITY, MO 64128-0130
PO BOX 280131, KANSAS CITY, MO 64128-0131
PO BOX 280132, KANSAS CITY, MO 64128-0132
PO BOX 280133, KANSAS CITY, MO 64128-0133
PO BOX 280134, KANSAS CITY, MO 64128-0134
PO BOX 280135, KANSAS CITY, MO 64128-0135
PO BOX 280136, KANSAS CITY, MO 64128-0136
PO BOX 280137, KANSAS CITY, MO 64128-0137
PO BOX 280138, KANSAS CITY, MO 64128-0138
PO BOX 280139, KANSAS CITY, MO 64128-0139
PO BOX 280140, KANSAS CITY, MO 64128-0140
PO BOX 280141, KANSAS CITY, MO 64128-0141
PO BOX 280142, KANSAS CITY, MO 64128-0142
PO BOX 280143, KANSAS CITY, MO 64128-0143
PO BOX 280144, KANSAS CITY, MO 64128-0144
PO BOX 280145, KANSAS CITY, MO 64128-0145
PO BOX 280146, KANSAS CITY, MO 64128-0146
PO BOX 280147, KANSAS CITY, MO 64128-0147
PO BOX 280148, KANSAS CITY, MO 64128-0148
PO BOX 280149, KANSAS CITY, MO 64128-0149
PO BOX 280150, KANSAS CITY, MO 64128-0150
PO BOX 280151, KANSAS CITY, MO 64128-0151
PO BOX 280152, KANSAS CITY, MO 64128-0152
PO BOX 280153, KANSAS CITY, MO 64128-0153
PO BOX 280154, KANSAS CITY, MO 64128-0154
PO BOX 280155, KANSAS CITY, MO 64128-0155
PO BOX 280156, KANSAS CITY, MO 64128-0156
PO BOX 280157, KANSAS CITY, MO 64128-0157
PO BOX 280158, KANSAS CITY, MO 64128-0158
PO BOX 280159, KANSAS CITY, MO 64128-0159
PO BOX 280160, KANSAS CITY, MO 64128-0160
PO BOX 280161, KANSAS CITY, MO 64128-0161
PO BOX 280162, KANSAS CITY, MO 64128-0162
PO BOX 280163, KANSAS CITY, MO 64128-0163
PO BOX 280164, KANSAS CITY, MO 64128-0164
PO BOX 280165, KANSAS CITY, MO 64128-0165
PO BOX 280166, KANSAS CITY, MO 64128-0166
PO BOX 280167, KANSAS CITY, MO 64128-0167
PO BOX 280168, KANSAS CITY, MO 64128-0168
PO BOX 280169, KANSAS CITY, MO 64128-0169
PO BOX 280170, KANSAS CITY, MO 64128-0170
PO BOX 280171, KANSAS CITY, MO 64128-0171
PO BOX 280172, KANSAS CITY, MO 64128-0172
PO BOX 280173, KANSAS CITY, MO 64128-0173
PO BOX 280174, KANSAS CITY, MO 64128-0174
PO BOX 280175, KANSAS CITY, MO 64128-0175
PO BOX 280176, KANSAS CITY, MO 64128-0176
PO BOX 280177, KANSAS CITY, MO 64128-0177
PO BOX 280178, KANSAS CITY, MO 64128-0178
PO BOX 280179, KANSAS CITY, MO 64128-0179
PO BOX 280180, KANSAS CITY, MO 64128-0180
PO BOX 280181, KANSAS CITY, MO 64128-0181
PO BOX 280182, KANSAS CITY, MO 64128-0182
PO BOX 280183, KANSAS CITY, MO 64128-0183
PO BOX 280184, KANSAS CITY, MO 64128-0184
PO BOX 280185, KANSAS CITY, MO 64128-0185
PO BOX 280186, KANSAS CITY, MO 64128-0186
PO BOX 280187, KANSAS CITY, MO 64128-0187
PO BOX 280188, KANSAS CITY, MO 64128-0188
PO BOX 280189, KANSAS CITY, MO 64128-0189
PO BOX 280190, KANSAS CITY, MO 64128-0190
PO BOX 280191, KANSAS CITY, MO 64128-0191
PO BOX 280192, KANSAS CITY, MO 64128-0192
PO BOX 280193, KANSAS CITY, MO 64128-0193
PO BOX 280194, KANSAS CITY, MO 64128-0194
PO BOX 280195, KANSAS CITY, MO 64128-0195
PO BOX 280196, KANSAS CITY, MO 64128-0196
PO BOX 280197, KANSAS CITY, MO 64128-0197
PO BOX 280198, KANSAS CITY, MO 64128-0198
PO BOX 280199, KANSAS CITY, MO 64128-0199
PO BOX 280200, KANSAS CITY, MO 64128-0200
PO BOX 280201, KANSAS CITY, MO 64128-0201
PO BOX 280202, KANSAS CITY, MO 64128-0202
PO BOX 280203, KANSAS CITY, MO 64128-0203
PO BOX 280204, KANSAS CITY, MO 64128-0204
PO BOX 280205, KANSAS CITY, MO 64128-0205
PO BOX 280206, KANSAS CITY, MO 64128-0206
PO BOX 280207, KANSAS CITY, MO 64128-0207
PO BOX 280208, KANSAS CITY, MO 64128-0208
PO BOX 280209, KANSAS CITY, MO 64128-0209
PO BOX 280210, KANSAS CITY, MO 64128-0210
PO BOX 280211, KANSAS CITY, MO 64128-0211
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