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 1, WAPPAPELLO, MO 63966-0001
PO BOX 2, WAPPAPELLO, MO 63966-0002
PO BOX 3, WAPPAPELLO, MO 63966-0003
PO BOX 4, WAPPAPELLO, MO 63966-0004
PO BOX 5, WAPPAPELLO, MO 63966-0005
PO BOX 6, WAPPAPELLO, MO 63966-0006
PO BOX 7, WAPPAPELLO, MO 63966-0007
PO BOX 8, WAPPAPELLO, MO 63966-0008
PO BOX 9, WAPPAPELLO, MO 63966-0009
PO BOX 10, WAPPAPELLO, MO 63966-0010
PO BOX 11, WAPPAPELLO, MO 63966-0011
PO BOX 12, WAPPAPELLO, MO 63966-0012
PO BOX 13, WAPPAPELLO, MO 63966-0013
PO BOX 14, WAPPAPELLO, MO 63966-0014
PO BOX 15, WAPPAPELLO, MO 63966-0015
PO BOX 16, WAPPAPELLO, MO 63966-0016
PO BOX 17, WAPPAPELLO, MO 63966-0017
PO BOX 18, WAPPAPELLO, MO 63966-0018
PO BOX 19, WAPPAPELLO, MO 63966-0019
PO BOX 20, WAPPAPELLO, MO 63966-0020
PO BOX 21, WAPPAPELLO, MO 63966-0021
PO BOX 22, WAPPAPELLO, MO 63966-0022
PO BOX 23, WAPPAPELLO, MO 63966-0023
PO BOX 24, WAPPAPELLO, MO 63966-0024
PO BOX 25, WAPPAPELLO, MO 63966-0025
PO BOX 26, WAPPAPELLO, MO 63966-0026
PO BOX 27, WAPPAPELLO, MO 63966-0027
PO BOX 28, WAPPAPELLO, MO 63966-0028
PO BOX 29, WAPPAPELLO, MO 63966-0029
PO BOX 30, WAPPAPELLO, MO 63966-0030
PO BOX 31, WAPPAPELLO, MO 63966-0031
PO BOX 32, WAPPAPELLO, MO 63966-0032
PO BOX 33, WAPPAPELLO, MO 63966-0033
PO BOX 34, WAPPAPELLO, MO 63966-0034
PO BOX 35, WAPPAPELLO, MO 63966-0035
PO BOX 36, WAPPAPELLO, MO 63966-0036
PO BOX 37, WAPPAPELLO, MO 63966-0037
PO BOX 38, WAPPAPELLO, MO 63966-0038
PO BOX 39, WAPPAPELLO, MO 63966-0039
PO BOX 40, WAPPAPELLO, MO 63966-0040
PO BOX 41, WAPPAPELLO, MO 63966-0041
PO BOX 42, WAPPAPELLO, MO 63966-0042
PO BOX 43, WAPPAPELLO, MO 63966-0043
PO BOX 44, WAPPAPELLO, MO 63966-0044
PO BOX 45, WAPPAPELLO, MO 63966-0045
PO BOX 46, WAPPAPELLO, MO 63966-0046
PO BOX 47, WAPPAPELLO, MO 63966-0047
PO BOX 48, WAPPAPELLO, MO 63966-0048
PO BOX 49, WAPPAPELLO, MO 63966-0049
PO BOX 50, WAPPAPELLO, MO 63966-0050
PO BOX 51, WAPPAPELLO, MO 63966-0051
PO BOX 52, WAPPAPELLO, MO 63966-0052
PO BOX 53, WAPPAPELLO, MO 63966-0053
PO BOX 54, WAPPAPELLO, MO 63966-0054
PO BOX 55, WAPPAPELLO, MO 63966-0055
PO BOX 56, WAPPAPELLO, MO 63966-0056
PO BOX 57, WAPPAPELLO, MO 63966-0057
PO BOX 58, WAPPAPELLO, MO 63966-0058
PO BOX 59, WAPPAPELLO, MO 63966-0059
PO BOX 60, WAPPAPELLO, MO 63966-0060
PO BOX 61, WAPPAPELLO, MO 63966-0061
PO BOX 62, WAPPAPELLO, MO 63966-0062
PO BOX 63, WAPPAPELLO, MO 63966-0063
PO BOX 64, WAPPAPELLO, MO 63966-0064
PO BOX 65, WAPPAPELLO, MO 63966-0065
PO BOX 66, WAPPAPELLO, MO 63966-0066
PO BOX 67, WAPPAPELLO, MO 63966-0067
PO BOX 68, WAPPAPELLO, MO 63966-0068
PO BOX 69, WAPPAPELLO, MO 63966-0069
PO BOX 70, WAPPAPELLO, MO 63966-0070
PO BOX 71, WAPPAPELLO, MO 63966-0071
PO BOX 72, WAPPAPELLO, MO 63966-0072
PO BOX 73, WAPPAPELLO, MO 63966-0073
PO BOX 74, WAPPAPELLO, MO 63966-0074
PO BOX 75, WAPPAPELLO, MO 63966-0075
PO BOX 76, WAPPAPELLO, MO 63966-0076
PO BOX 77, WAPPAPELLO, MO 63966-0077
PO BOX 78, WAPPAPELLO, MO 63966-0078
PO BOX 79, WAPPAPELLO, MO 63966-0079
PO BOX 80, WAPPAPELLO, MO 63966-0080
PO BOX 81, WAPPAPELLO, MO 63966-0081
PO BOX 82, WAPPAPELLO, MO 63966-0082
PO BOX 83, WAPPAPELLO, MO 63966-0083
PO BOX 84, WAPPAPELLO, MO 63966-0084
PO BOX 85, WAPPAPELLO, MO 63966-0085
PO BOX 86, WAPPAPELLO, MO 63966-0086
PO BOX 87, WAPPAPELLO, MO 63966-0087
PO BOX 88, WAPPAPELLO, MO 63966-0088
PO BOX 89, WAPPAPELLO, MO 63966-0089
PO BOX 90, WAPPAPELLO, MO 63966-0090
PO BOX 91, WAPPAPELLO, MO 63966-0091
PO BOX 92, WAPPAPELLO, MO 63966-0092
PO BOX 93, WAPPAPELLO, MO 63966-0093
PO BOX 94, WAPPAPELLO, MO 63966-0094
PO BOX 95, WAPPAPELLO, MO 63966-0095
PO BOX 96, WAPPAPELLO, MO 63966-0096
PO BOX 97, WAPPAPELLO, MO 63966-0097
PO BOX 98, WAPPAPELLO, MO 63966-0098
PO BOX 99, WAPPAPELLO, MO 63966-0099
PO BOX 100, WAPPAPELLO, MO 63966-0100
PO BOX 101, WAPPAPELLO, MO 63966-0101
PO BOX 102, WAPPAPELLO, MO 63966-0102
PO BOX 103, WAPPAPELLO, MO 63966-0103
PO BOX 104, WAPPAPELLO, MO 63966-0104
PO BOX 105, WAPPAPELLO, MO 63966-0105
PO BOX 106, WAPPAPELLO, MO 63966-0106
PO BOX 107, WAPPAPELLO, MO 63966-0107
PO BOX 108, WAPPAPELLO, MO 63966-0108
PO BOX 109, WAPPAPELLO, MO 63966-0109
PO BOX 110, WAPPAPELLO, MO 63966-0110
PO BOX 111, WAPPAPELLO, MO 63966-0111
PO BOX 112, WAPPAPELLO, MO 63966-0112
PO BOX 113, WAPPAPELLO, MO 63966-0113
PO BOX 114, WAPPAPELLO, MO 63966-0114
PO BOX 115, WAPPAPELLO, MO 63966-0115
PO BOX 116, WAPPAPELLO, MO 63966-0116
PO BOX 117, WAPPAPELLO, MO 63966-0117
PO BOX 118, WAPPAPELLO, MO 63966-0118
PO BOX 119, WAPPAPELLO, MO 63966-0119
PO BOX 120, WAPPAPELLO, MO 63966-0120
PO BOX 121, WAPPAPELLO, MO 63966-0121
PO BOX 122, WAPPAPELLO, MO 63966-0122
PO BOX 123, WAPPAPELLO, MO 63966-0123
PO BOX 124, WAPPAPELLO, MO 63966-0124
PO BOX 125, WAPPAPELLO, MO 63966-0125
PO BOX 126, WAPPAPELLO, MO 63966-0126
PO BOX 127, WAPPAPELLO, MO 63966-0127
PO BOX 128, WAPPAPELLO, MO 63966-0128
PO BOX 129, WAPPAPELLO, MO 63966-0129
PO BOX 130, WAPPAPELLO, MO 63966-0130
PO BOX 131, WAPPAPELLO, MO 63966-0131
PO BOX 132, WAPPAPELLO, MO 63966-0132
PO BOX 133, WAPPAPELLO, MO 63966-0133
PO BOX 134, WAPPAPELLO, MO 63966-0134
PO BOX 135, WAPPAPELLO, MO 63966-0135
PO BOX 136, WAPPAPELLO, MO 63966-0136
PO BOX 137, WAPPAPELLO, MO 63966-0137
PO BOX 138, WAPPAPELLO, MO 63966-0138
PO BOX 139, WAPPAPELLO, MO 63966-0139
PO BOX 140, WAPPAPELLO, MO 63966-0140
PO BOX 141, WAPPAPELLO, MO 63966-0141
PO BOX 142, WAPPAPELLO, MO 63966-0142
PO BOX 143, WAPPAPELLO, MO 63966-0143
PO BOX 144, WAPPAPELLO, MO 63966-0144
PO BOX 145, WAPPAPELLO, MO 63966-0145
PO BOX 146, WAPPAPELLO, MO 63966-0146
PO BOX 147, WAPPAPELLO, MO 63966-0147
PO BOX 148, WAPPAPELLO, MO 63966-0148
PO BOX 149, WAPPAPELLO, MO 63966-0149
PO BOX 150, WAPPAPELLO, MO 63966-0150
PO BOX 151, WAPPAPELLO, MO 63966-0151
PO BOX 152, WAPPAPELLO, MO 63966-0152
PO BOX 153, WAPPAPELLO, MO 63966-0153
PO BOX 154, WAPPAPELLO, MO 63966-0154
PO BOX 155, WAPPAPELLO, MO 63966-0155
PO BOX 156, WAPPAPELLO, MO 63966-0156
PO BOX 157, WAPPAPELLO, MO 63966-0157
PO BOX 158, WAPPAPELLO, MO 63966-0158
PO BOX 159, WAPPAPELLO, MO 63966-0159
PO BOX 160, WAPPAPELLO, MO 63966-0160
PO BOX 161, WAPPAPELLO, MO 63966-0161
PO BOX 162, WAPPAPELLO, MO 63966-0162
PO BOX 163, WAPPAPELLO, MO 63966-0163
PO BOX 164, WAPPAPELLO, MO 63966-0164
PO BOX 165, WAPPAPELLO, MO 63966-0165
PO BOX 166, WAPPAPELLO, MO 63966-0166
PO BOX 167, WAPPAPELLO, MO 63966-0167
PO BOX 168, WAPPAPELLO, MO 63966-0168
PO BOX 169, WAPPAPELLO, MO 63966-0169
PO BOX 170, WAPPAPELLO, MO 63966-0170
PO BOX 171, WAPPAPELLO, MO 63966-0171
PO BOX 172, WAPPAPELLO, MO 63966-0172
PO BOX 173, WAPPAPELLO, MO 63966-0173
PO BOX 174, WAPPAPELLO, MO 63966-0174
PO BOX 175, WAPPAPELLO, MO 63966-0175
PO BOX 176, WAPPAPELLO, MO 63966-0176
PO BOX 177, WAPPAPELLO, MO 63966-0177
PO BOX 178, WAPPAPELLO, MO 63966-0178
PO BOX 179, WAPPAPELLO, MO 63966-0179
PO BOX 180, WAPPAPELLO, MO 63966-0180
PO BOX 181, WAPPAPELLO, MO 63966-0181
PO BOX 182, WAPPAPELLO, MO 63966-0182
PO BOX 183, WAPPAPELLO, MO 63966-0183
PO BOX 184, WAPPAPELLO, MO 63966-0184
PO BOX 185, WAPPAPELLO, MO 63966-0185
PO BOX 186, WAPPAPELLO, MO 63966-0186
PO BOX 187, WAPPAPELLO, MO 63966-0187
PO BOX 188, WAPPAPELLO, MO 63966-0188
PO BOX 189, WAPPAPELLO, MO 63966-0189
PO BOX 190, WAPPAPELLO, MO 63966-0190
PO BOX 191, WAPPAPELLO, MO 63966-0191
PO BOX 192, WAPPAPELLO, MO 63966-0192
PO BOX 193, WAPPAPELLO, MO 63966-0193
PO BOX 194, WAPPAPELLO, MO 63966-0194
PO BOX 195, WAPPAPELLO, MO 63966-0195
PO BOX 196, WAPPAPELLO, MO 63966-0196
PO BOX 197, WAPPAPELLO, MO 63966-0197
PO BOX 198, WAPPAPELLO, MO 63966-0198
PO BOX 199, WAPPAPELLO, MO 63966-0199
PO BOX 200, WAPPAPELLO, MO 63966-0200
PO BOX 201, WAPPAPELLO, MO 63966-0201
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