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, MORLAND, KS 67650-0001
PO BOX 2, MORLAND, KS 67650-0002
PO BOX 3, MORLAND, KS 67650-0003
PO BOX 4, MORLAND, KS 67650-0004
PO BOX 5, MORLAND, KS 67650-0005
PO BOX 6, MORLAND, KS 67650-0006
PO BOX 7, MORLAND, KS 67650-0007
PO BOX 8, MORLAND, KS 67650-0008
PO BOX 9, MORLAND, KS 67650-0009
PO BOX 10, MORLAND, KS 67650-0010
PO BOX 11, MORLAND, KS 67650-0011
PO BOX 12, MORLAND, KS 67650-0012
PO BOX 13, MORLAND, KS 67650-0013
PO BOX 14, MORLAND, KS 67650-0014
PO BOX 15, MORLAND, KS 67650-0015
PO BOX 16, MORLAND, KS 67650-0016
PO BOX 17, MORLAND, KS 67650-0017
PO BOX 18, MORLAND, KS 67650-0018
PO BOX 19, MORLAND, KS 67650-0019
PO BOX 20, MORLAND, KS 67650-0020
PO BOX 21, MORLAND, KS 67650-0021
PO BOX 22, MORLAND, KS 67650-0022
PO BOX 23, MORLAND, KS 67650-0023
PO BOX 24, MORLAND, KS 67650-0024
PO BOX 25, MORLAND, KS 67650-0025
PO BOX 26, MORLAND, KS 67650-0026
PO BOX 27, MORLAND, KS 67650-0027
PO BOX 28, MORLAND, KS 67650-0028
PO BOX 29, MORLAND, KS 67650-0029
PO BOX 30, MORLAND, KS 67650-0030
PO BOX 31, MORLAND, KS 67650-0031
PO BOX 32, MORLAND, KS 67650-0032
PO BOX 33, MORLAND, KS 67650-0033
PO BOX 34, MORLAND, KS 67650-0034
PO BOX 35, MORLAND, KS 67650-0035
PO BOX 36, MORLAND, KS 67650-0036
PO BOX 37, MORLAND, KS 67650-0037
PO BOX 38, MORLAND, KS 67650-0038
PO BOX 39, MORLAND, KS 67650-0039
PO BOX 40, MORLAND, KS 67650-0040
PO BOX 41, MORLAND, KS 67650-0041
PO BOX 42, MORLAND, KS 67650-0042
PO BOX 43, MORLAND, KS 67650-0043
PO BOX 44, MORLAND, KS 67650-0044
PO BOX 45, MORLAND, KS 67650-0045
PO BOX 46, MORLAND, KS 67650-0046
PO BOX 47, MORLAND, KS 67650-0047
PO BOX 48, MORLAND, KS 67650-0048
PO BOX 49, MORLAND, KS 67650-0049
PO BOX 50, MORLAND, KS 67650-0050
PO BOX 51, MORLAND, KS 67650-0051
PO BOX 52, MORLAND, KS 67650-0052
PO BOX 53, MORLAND, KS 67650-0053
PO BOX 54, MORLAND, KS 67650-0054
PO BOX 55, MORLAND, KS 67650-0055
PO BOX 56, MORLAND, KS 67650-0056
PO BOX 57, MORLAND, KS 67650-0057
PO BOX 58, MORLAND, KS 67650-0058
PO BOX 59, MORLAND, KS 67650-0059
PO BOX 60, MORLAND, KS 67650-0060
PO BOX 61, MORLAND, KS 67650-0061
PO BOX 62, MORLAND, KS 67650-0062
PO BOX 63, MORLAND, KS 67650-0063
PO BOX 64, MORLAND, KS 67650-0064
PO BOX 65, MORLAND, KS 67650-0065
PO BOX 66, MORLAND, KS 67650-0066
PO BOX 67, MORLAND, KS 67650-0067
PO BOX 68, MORLAND, KS 67650-0068
PO BOX 69, MORLAND, KS 67650-0069
PO BOX 70, MORLAND, KS 67650-0070
PO BOX 71, MORLAND, KS 67650-0071
PO BOX 72, MORLAND, KS 67650-0072
PO BOX 73, MORLAND, KS 67650-0073
PO BOX 74, MORLAND, KS 67650-0074
PO BOX 75, MORLAND, KS 67650-0075
PO BOX 76, MORLAND, KS 67650-0076
PO BOX 77, MORLAND, KS 67650-0077
PO BOX 78, MORLAND, KS 67650-0078
PO BOX 79, MORLAND, KS 67650-0079
PO BOX 80, MORLAND, KS 67650-0080
PO BOX 81, MORLAND, KS 67650-0081
PO BOX 82, MORLAND, KS 67650-0082
PO BOX 83, MORLAND, KS 67650-0083
PO BOX 84, MORLAND, KS 67650-0084
PO BOX 85, MORLAND, KS 67650-0085
PO BOX 86, MORLAND, KS 67650-0086
PO BOX 87, MORLAND, KS 67650-0087
PO BOX 88, MORLAND, KS 67650-0088
PO BOX 89, MORLAND, KS 67650-0089
PO BOX 90, MORLAND, KS 67650-0090
PO BOX 91, MORLAND, KS 67650-0091
PO BOX 92, MORLAND, KS 67650-0092
PO BOX 93, MORLAND, KS 67650-0093
PO BOX 94, MORLAND, KS 67650-0094
PO BOX 95, MORLAND, KS 67650-0095
PO BOX 96, MORLAND, KS 67650-0096
PO BOX 97, MORLAND, KS 67650-0097
PO BOX 98, MORLAND, KS 67650-0098
PO BOX 99, MORLAND, KS 67650-0099
PO BOX 100, MORLAND, KS 67650-0100
PO BOX 101, MORLAND, KS 67650-0101
PO BOX 102, MORLAND, KS 67650-0102
PO BOX 103, MORLAND, KS 67650-0103
PO BOX 104, MORLAND, KS 67650-0104
PO BOX 105, MORLAND, KS 67650-0105
PO BOX 106, MORLAND, KS 67650-0106
PO BOX 107, MORLAND, KS 67650-0107
PO BOX 108, MORLAND, KS 67650-0108
PO BOX 109, MORLAND, KS 67650-0109
PO BOX 110, MORLAND, KS 67650-0110
PO BOX 111, MORLAND, KS 67650-0111
PO BOX 112, MORLAND, KS 67650-0112
PO BOX 113, MORLAND, KS 67650-0113
PO BOX 114, MORLAND, KS 67650-0114
PO BOX 115, MORLAND, KS 67650-0115
PO BOX 116, MORLAND, KS 67650-0116
PO BOX 117, MORLAND, KS 67650-0117
PO BOX 118, MORLAND, KS 67650-0118
PO BOX 119, MORLAND, KS 67650-0119
PO BOX 120, MORLAND, KS 67650-0120
PO BOX 121, MORLAND, KS 67650-0121
PO BOX 122, MORLAND, KS 67650-0122
PO BOX 123, MORLAND, KS 67650-0123
PO BOX 124, MORLAND, KS 67650-0124
PO BOX 125, MORLAND, KS 67650-0125
PO BOX 126, MORLAND, KS 67650-0126
PO BOX 127, MORLAND, KS 67650-0127
PO BOX 128, MORLAND, KS 67650-0128
PO BOX 129, MORLAND, KS 67650-0129
PO BOX 130, MORLAND, KS 67650-0130
PO BOX 131, MORLAND, KS 67650-0131
PO BOX 132, MORLAND, KS 67650-0132
PO BOX 133, MORLAND, KS 67650-0133
PO BOX 134, MORLAND, KS 67650-0134
PO BOX 135, MORLAND, KS 67650-0135
PO BOX 136, MORLAND, KS 67650-0136
PO BOX 137, MORLAND, KS 67650-0137
PO BOX 138, MORLAND, KS 67650-0138
PO BOX 139, MORLAND, KS 67650-0139
PO BOX 140, MORLAND, KS 67650-0140
PO BOX 141, MORLAND, KS 67650-0141
PO BOX 142, MORLAND, KS 67650-0142
PO BOX 143, MORLAND, KS 67650-0143
PO BOX 144, MORLAND, KS 67650-0144
PO BOX 145, MORLAND, KS 67650-0145
PO BOX 146, MORLAND, KS 67650-0146
PO BOX 147, MORLAND, KS 67650-0147
PO BOX 148, MORLAND, KS 67650-0148
PO BOX 149, MORLAND, KS 67650-0149
PO BOX 150, MORLAND, KS 67650-0150
PO BOX 151, MORLAND, KS 67650-0151
PO BOX 152, MORLAND, KS 67650-0152
PO BOX 153, MORLAND, KS 67650-0153
PO BOX 154, MORLAND, KS 67650-0154
PO BOX 155, MORLAND, KS 67650-0155
PO BOX 156, MORLAND, KS 67650-0156
PO BOX 157, MORLAND, KS 67650-0157
PO BOX 158, MORLAND, KS 67650-0158
PO BOX 159, MORLAND, KS 67650-0159
PO BOX 160, MORLAND, KS 67650-0160
PO BOX 161, MORLAND, KS 67650-0161
PO BOX 162, MORLAND, KS 67650-0162
PO BOX 163, MORLAND, KS 67650-0163
PO BOX 164, MORLAND, KS 67650-0164
PO BOX 165, MORLAND, KS 67650-0165
PO BOX 166, MORLAND, KS 67650-0166
PO BOX 167, MORLAND, KS 67650-0167
PO BOX 168, MORLAND, KS 67650-0168
PO BOX 169, MORLAND, KS 67650-0169
PO BOX 170, MORLAND, KS 67650-0170
PO BOX 171, MORLAND, KS 67650-0171
PO BOX 172, MORLAND, KS 67650-0172
PO BOX 173, MORLAND, KS 67650-0173
PO BOX 174, MORLAND, KS 67650-0174
PO BOX 175, MORLAND, KS 67650-0175
PO BOX 176, MORLAND, KS 67650-0176
PO BOX 177, MORLAND, KS 67650-0177
PO BOX 178, MORLAND, KS 67650-0178
PO BOX 179, MORLAND, KS 67650-0179
PO BOX 180, MORLAND, KS 67650-0180
PO BOX 181, MORLAND, KS 67650-0181
PO BOX 182, MORLAND, KS 67650-0182
PO BOX 183, MORLAND, KS 67650-0183
PO BOX 184, MORLAND, KS 67650-0184
PO BOX 185, MORLAND, KS 67650-0185
PO BOX 186, MORLAND, KS 67650-0186
PO BOX 187, MORLAND, KS 67650-0187
PO BOX 188, MORLAND, KS 67650-0188
PO BOX 189, MORLAND, KS 67650-0189
PO BOX 190, MORLAND, KS 67650-0190
PO BOX 191, MORLAND, KS 67650-0191
PO BOX 192, MORLAND, KS 67650-0192
PO BOX 193, MORLAND, KS 67650-0193
PO BOX 194, MORLAND, KS 67650-0194
PO BOX 195, MORLAND, KS 67650-0195
PO BOX 196, MORLAND, KS 67650-0196
PO BOX 197, MORLAND, KS 67650-0197
PO BOX 198, MORLAND, KS 67650-0198
PO BOX 199, MORLAND, KS 67650-0199
PO BOX 200, MORLAND, KS 67650-0200
PO BOX 201, MORLAND, KS 67650-0201
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