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, COLUMBUS JUNCTION, IA 52738-0001
PO BOX 2, COLUMBUS JUNCTION, IA 52738-0002
PO BOX 3, COLUMBUS JUNCTION, IA 52738-0003
PO BOX 4, COLUMBUS JUNCTION, IA 52738-0004
PO BOX 5, COLUMBUS JUNCTION, IA 52738-0005
PO BOX 6, COLUMBUS JUNCTION, IA 52738-0006
PO BOX 7, COLUMBUS JUNCTION, IA 52738-0007
PO BOX 8, COLUMBUS JUNCTION, IA 52738-0008
PO BOX 9, COLUMBUS JUNCTION, IA 52738-0009
PO BOX 10, COLUMBUS JUNCTION, IA 52738-0010
PO BOX 11, COLUMBUS JUNCTION, IA 52738-0011
PO BOX 12, COLUMBUS JUNCTION, IA 52738-0012
PO BOX 13, COLUMBUS JUNCTION, IA 52738-0013
PO BOX 14, COLUMBUS JUNCTION, IA 52738-0014
PO BOX 15, COLUMBUS JUNCTION, IA 52738-0015
PO BOX 16, COLUMBUS JUNCTION, IA 52738-0016
PO BOX 17, COLUMBUS JUNCTION, IA 52738-0017
PO BOX 18, COLUMBUS JUNCTION, IA 52738-0018
PO BOX 19, COLUMBUS JUNCTION, IA 52738-0019
PO BOX 20, COLUMBUS JUNCTION, IA 52738-0020
PO BOX 21, COLUMBUS JUNCTION, IA 52738-0021
PO BOX 22, COLUMBUS JUNCTION, IA 52738-0022
PO BOX 23, COLUMBUS JUNCTION, IA 52738-0023
PO BOX 24, COLUMBUS JUNCTION, IA 52738-0024
PO BOX 25, COLUMBUS JUNCTION, IA 52738-0025
PO BOX 26, COLUMBUS JUNCTION, IA 52738-0026
PO BOX 27, COLUMBUS JUNCTION, IA 52738-0027
PO BOX 28, COLUMBUS JUNCTION, IA 52738-0028
PO BOX 29, COLUMBUS JUNCTION, IA 52738-0029
PO BOX 30, COLUMBUS JUNCTION, IA 52738-0030
PO BOX 31, COLUMBUS JUNCTION, IA 52738-0031
PO BOX 32, COLUMBUS JUNCTION, IA 52738-0032
PO BOX 33, COLUMBUS JUNCTION, IA 52738-0033
PO BOX 34, COLUMBUS JUNCTION, IA 52738-0034
PO BOX 35, COLUMBUS JUNCTION, IA 52738-0035
PO BOX 36, COLUMBUS JUNCTION, IA 52738-0036
PO BOX 37, COLUMBUS JUNCTION, IA 52738-0037
PO BOX 38, COLUMBUS JUNCTION, IA 52738-0038
PO BOX 39, COLUMBUS JUNCTION, IA 52738-0039
PO BOX 40, COLUMBUS JUNCTION, IA 52738-0040
PO BOX 41, COLUMBUS JUNCTION, IA 52738-0041
PO BOX 42, COLUMBUS JUNCTION, IA 52738-0042
PO BOX 43, COLUMBUS JUNCTION, IA 52738-0043
PO BOX 44, COLUMBUS JUNCTION, IA 52738-0044
PO BOX 45, COLUMBUS JUNCTION, IA 52738-0045
PO BOX 46, COLUMBUS JUNCTION, IA 52738-0046
PO BOX 47, COLUMBUS JUNCTION, IA 52738-0047
PO BOX 48, COLUMBUS JUNCTION, IA 52738-0048
PO BOX 49, COLUMBUS JUNCTION, IA 52738-0049
PO BOX 50, COLUMBUS JUNCTION, IA 52738-0050
PO BOX 51, COLUMBUS JUNCTION, IA 52738-0051
PO BOX 52, COLUMBUS JUNCTION, IA 52738-0052
PO BOX 53, COLUMBUS JUNCTION, IA 52738-0053
PO BOX 54, COLUMBUS JUNCTION, IA 52738-0054
PO BOX 55, COLUMBUS JUNCTION, IA 52738-0055
PO BOX 56, COLUMBUS JUNCTION, IA 52738-0056
PO BOX 57, COLUMBUS JUNCTION, IA 52738-0057
PO BOX 58, COLUMBUS JUNCTION, IA 52738-0058
PO BOX 59, COLUMBUS JUNCTION, IA 52738-0059
PO BOX 60, COLUMBUS JUNCTION, IA 52738-0060
PO BOX 61, COLUMBUS JUNCTION, IA 52738-0061
PO BOX 62, COLUMBUS JUNCTION, IA 52738-0062
PO BOX 63, COLUMBUS JUNCTION, IA 52738-0063
PO BOX 64, COLUMBUS JUNCTION, IA 52738-0064
PO BOX 65, COLUMBUS JUNCTION, IA 52738-0065
PO BOX 66, COLUMBUS JUNCTION, IA 52738-0066
PO BOX 67, COLUMBUS JUNCTION, IA 52738-0067
PO BOX 68, COLUMBUS JUNCTION, IA 52738-0068
PO BOX 69, COLUMBUS JUNCTION, IA 52738-0069
PO BOX 70, COLUMBUS JUNCTION, IA 52738-0070
PO BOX 71, COLUMBUS JUNCTION, IA 52738-0071
PO BOX 72, COLUMBUS JUNCTION, IA 52738-0072
PO BOX 73, COLUMBUS JUNCTION, IA 52738-0073
PO BOX 74, COLUMBUS JUNCTION, IA 52738-0074
PO BOX 75, COLUMBUS JUNCTION, IA 52738-0075
PO BOX 76, COLUMBUS JUNCTION, IA 52738-0076
PO BOX 77, COLUMBUS JUNCTION, IA 52738-0077
PO BOX 78, COLUMBUS JUNCTION, IA 52738-0078
PO BOX 79, COLUMBUS JUNCTION, IA 52738-0079
PO BOX 80, COLUMBUS JUNCTION, IA 52738-0080
PO BOX 81, COLUMBUS JUNCTION, IA 52738-0081
PO BOX 82, COLUMBUS JUNCTION, IA 52738-0082
PO BOX 83, COLUMBUS JUNCTION, IA 52738-0083
PO BOX 84, COLUMBUS JUNCTION, IA 52738-0084
PO BOX 85, COLUMBUS JUNCTION, IA 52738-0085
PO BOX 86, COLUMBUS JUNCTION, IA 52738-0086
PO BOX 87, COLUMBUS JUNCTION, IA 52738-0087
PO BOX 88, COLUMBUS JUNCTION, IA 52738-0088
PO BOX 89, COLUMBUS JUNCTION, IA 52738-0089
PO BOX 90, COLUMBUS JUNCTION, IA 52738-0090
PO BOX 91, COLUMBUS JUNCTION, IA 52738-0091
PO BOX 92, COLUMBUS JUNCTION, IA 52738-0092
PO BOX 93, COLUMBUS JUNCTION, IA 52738-0093
PO BOX 94, COLUMBUS JUNCTION, IA 52738-0094
PO BOX 95, COLUMBUS JUNCTION, IA 52738-0095
PO BOX 96, COLUMBUS JUNCTION, IA 52738-0096
PO BOX 97, COLUMBUS JUNCTION, IA 52738-0097
PO BOX 98, COLUMBUS JUNCTION, IA 52738-0098
PO BOX 99, COLUMBUS JUNCTION, IA 52738-0099
PO BOX 100, COLUMBUS JUNCTION, IA 52738-0100
PO BOX 101, COLUMBUS JUNCTION, IA 52738-0101
PO BOX 102, COLUMBUS JUNCTION, IA 52738-0102
PO BOX 103, COLUMBUS JUNCTION, IA 52738-0103
PO BOX 104, COLUMBUS JUNCTION, IA 52738-0104
PO BOX 105, COLUMBUS JUNCTION, IA 52738-0105
PO BOX 106, COLUMBUS JUNCTION, IA 52738-0106
PO BOX 107, COLUMBUS JUNCTION, IA 52738-0107
PO BOX 108, COLUMBUS JUNCTION, IA 52738-0108
PO BOX 109, COLUMBUS JUNCTION, IA 52738-0109
PO BOX 110, COLUMBUS JUNCTION, IA 52738-0110
PO BOX 111, COLUMBUS JUNCTION, IA 52738-0111
PO BOX 112, COLUMBUS JUNCTION, IA 52738-0112
PO BOX 113, COLUMBUS JUNCTION, IA 52738-0113
PO BOX 114, COLUMBUS JUNCTION, IA 52738-0114
PO BOX 115, COLUMBUS JUNCTION, IA 52738-0115
PO BOX 116, COLUMBUS JUNCTION, IA 52738-0116
PO BOX 117, COLUMBUS JUNCTION, IA 52738-0117
PO BOX 118, COLUMBUS JUNCTION, IA 52738-0118
PO BOX 119, COLUMBUS JUNCTION, IA 52738-0119
PO BOX 120, COLUMBUS JUNCTION, IA 52738-0120
PO BOX 121, COLUMBUS JUNCTION, IA 52738-0121
PO BOX 122, COLUMBUS JUNCTION, IA 52738-0122
PO BOX 123, COLUMBUS JUNCTION, IA 52738-0123
PO BOX 124, COLUMBUS JUNCTION, IA 52738-0124
PO BOX 125, COLUMBUS JUNCTION, IA 52738-0125
PO BOX 126, COLUMBUS JUNCTION, IA 52738-0126
PO BOX 127, COLUMBUS JUNCTION, IA 52738-0127
PO BOX 128, COLUMBUS JUNCTION, IA 52738-0128
PO BOX 129, COLUMBUS JUNCTION, IA 52738-0129
PO BOX 130, COLUMBUS JUNCTION, IA 52738-0130
PO BOX 131, COLUMBUS JUNCTION, IA 52738-0131
PO BOX 132, COLUMBUS JUNCTION, IA 52738-0132
PO BOX 133, COLUMBUS JUNCTION, IA 52738-0133
PO BOX 134, COLUMBUS JUNCTION, IA 52738-0134
PO BOX 135, COLUMBUS JUNCTION, IA 52738-0135
PO BOX 136, COLUMBUS JUNCTION, IA 52738-0136
PO BOX 137, COLUMBUS JUNCTION, IA 52738-0137
PO BOX 138, COLUMBUS JUNCTION, IA 52738-0138
PO BOX 139, COLUMBUS JUNCTION, IA 52738-0139
PO BOX 140, COLUMBUS JUNCTION, IA 52738-0140
PO BOX 141, COLUMBUS JUNCTION, IA 52738-0141
PO BOX 142, COLUMBUS JUNCTION, IA 52738-0142
PO BOX 143, COLUMBUS JUNCTION, IA 52738-0143
PO BOX 144, COLUMBUS JUNCTION, IA 52738-0144
PO BOX 145, COLUMBUS JUNCTION, IA 52738-0145
PO BOX 146, COLUMBUS JUNCTION, IA 52738-0146
PO BOX 147, COLUMBUS JUNCTION, IA 52738-0147
PO BOX 148, COLUMBUS JUNCTION, IA 52738-0148
PO BOX 149, COLUMBUS JUNCTION, IA 52738-0149
PO BOX 150, COLUMBUS JUNCTION, IA 52738-0150
PO BOX 151, COLUMBUS JUNCTION, IA 52738-0151
PO BOX 152, COLUMBUS JUNCTION, IA 52738-0152
PO BOX 153, COLUMBUS JUNCTION, IA 52738-0153
PO BOX 154, COLUMBUS JUNCTION, IA 52738-0154
PO BOX 155, COLUMBUS JUNCTION, IA 52738-0155
PO BOX 156, COLUMBUS JUNCTION, IA 52738-0156
PO BOX 157, COLUMBUS JUNCTION, IA 52738-0157
PO BOX 158, COLUMBUS JUNCTION, IA 52738-0158
PO BOX 159, COLUMBUS JUNCTION, IA 52738-0159
PO BOX 160, COLUMBUS JUNCTION, IA 52738-0160
PO BOX 161, COLUMBUS JUNCTION, IA 52738-0161
PO BOX 162, COLUMBUS JUNCTION, IA 52738-0162
PO BOX 163, COLUMBUS JUNCTION, IA 52738-0163
PO BOX 164, COLUMBUS JUNCTION, IA 52738-0164
PO BOX 165, COLUMBUS JUNCTION, IA 52738-0165
PO BOX 166, COLUMBUS JUNCTION, IA 52738-0166
PO BOX 167, COLUMBUS JUNCTION, IA 52738-0167
PO BOX 168, COLUMBUS JUNCTION, IA 52738-0168
PO BOX 169, COLUMBUS JUNCTION, IA 52738-0169
PO BOX 170, COLUMBUS JUNCTION, IA 52738-0170
PO BOX 171, COLUMBUS JUNCTION, IA 52738-0171
PO BOX 172, COLUMBUS JUNCTION, IA 52738-0172
PO BOX 173, COLUMBUS JUNCTION, IA 52738-0173
PO BOX 174, COLUMBUS JUNCTION, IA 52738-0174
PO BOX 175, COLUMBUS JUNCTION, IA 52738-0175
PO BOX 176, COLUMBUS JUNCTION, IA 52738-0176
PO BOX 177, COLUMBUS JUNCTION, IA 52738-0177
PO BOX 178, COLUMBUS JUNCTION, IA 52738-0178
PO BOX 179, COLUMBUS JUNCTION, IA 52738-0179
PO BOX 180, COLUMBUS JUNCTION, IA 52738-0180
PO BOX 181, COLUMBUS JUNCTION, IA 52738-0181
PO BOX 182, COLUMBUS JUNCTION, IA 52738-0182
PO BOX 183, COLUMBUS JUNCTION, IA 52738-0183
PO BOX 184, COLUMBUS JUNCTION, IA 52738-0184
PO BOX 185, COLUMBUS JUNCTION, IA 52738-0185
PO BOX 186, COLUMBUS JUNCTION, IA 52738-0186
PO BOX 187, COLUMBUS JUNCTION, IA 52738-0187
PO BOX 188, COLUMBUS JUNCTION, IA 52738-0188
PO BOX 189, COLUMBUS JUNCTION, IA 52738-0189
PO BOX 190, COLUMBUS JUNCTION, IA 52738-0190
PO BOX 191, COLUMBUS JUNCTION, IA 52738-0191
PO BOX 192, COLUMBUS JUNCTION, IA 52738-0192
PO BOX 193, COLUMBUS JUNCTION, IA 52738-0193
PO BOX 194, COLUMBUS JUNCTION, IA 52738-0194
PO BOX 195, COLUMBUS JUNCTION, IA 52738-0195
PO BOX 196, COLUMBUS JUNCTION, IA 52738-0196
PO BOX 197, COLUMBUS JUNCTION, IA 52738-0197
PO BOX 198, COLUMBUS JUNCTION, IA 52738-0198
PO BOX 199, COLUMBUS JUNCTION, IA 52738-0199
PO BOX 200, COLUMBUS JUNCTION, IA 52738-0200
PO BOX 201, COLUMBUS JUNCTION, IA 52738-0201
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