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, MS 39703-0001
PO BOX 2, COLUMBUS, MS 39703-0002
PO BOX 3, COLUMBUS, MS 39703-0003
PO BOX 4, COLUMBUS, MS 39703-0004
PO BOX 5, COLUMBUS, MS 39703-0005
PO BOX 6, COLUMBUS, MS 39703-0006
PO BOX 7, COLUMBUS, MS 39703-0007
PO BOX 8, COLUMBUS, MS 39703-0008
PO BOX 9, COLUMBUS, MS 39703-0009
PO BOX 10, COLUMBUS, MS 39703-0010
PO BOX 11, COLUMBUS, MS 39703-0011
PO BOX 12, COLUMBUS, MS 39703-0012
PO BOX 13, COLUMBUS, MS 39703-0013
PO BOX 14, COLUMBUS, MS 39703-0014
PO BOX 15, COLUMBUS, MS 39703-0015
PO BOX 16, COLUMBUS, MS 39703-0016
PO BOX 17, COLUMBUS, MS 39703-0017
PO BOX 18, COLUMBUS, MS 39703-0018
PO BOX 19, COLUMBUS, MS 39703-0019
PO BOX 20, COLUMBUS, MS 39703-0020
PO BOX 21, COLUMBUS, MS 39703-0021
PO BOX 22, COLUMBUS, MS 39703-0022
PO BOX 23, COLUMBUS, MS 39703-0023
PO BOX 24, COLUMBUS, MS 39703-0024
PO BOX 25, COLUMBUS, MS 39703-0025
PO BOX 26, COLUMBUS, MS 39703-0026
PO BOX 27, COLUMBUS, MS 39703-0027
PO BOX 28, COLUMBUS, MS 39703-0028
PO BOX 29, COLUMBUS, MS 39703-0029
PO BOX 30, COLUMBUS, MS 39703-0030
PO BOX 31, COLUMBUS, MS 39703-0031
PO BOX 32, COLUMBUS, MS 39703-0032
PO BOX 33, COLUMBUS, MS 39703-0033
PO BOX 34, COLUMBUS, MS 39703-0034
PO BOX 35, COLUMBUS, MS 39703-0035
PO BOX 36, COLUMBUS, MS 39703-0036
PO BOX 37, COLUMBUS, MS 39703-0037
PO BOX 38, COLUMBUS, MS 39703-0038
PO BOX 39, COLUMBUS, MS 39703-0039
PO BOX 40, COLUMBUS, MS 39703-0040
PO BOX 41, COLUMBUS, MS 39703-0041
PO BOX 42, COLUMBUS, MS 39703-0042
PO BOX 43, COLUMBUS, MS 39703-0043
PO BOX 44, COLUMBUS, MS 39703-0044
PO BOX 45, COLUMBUS, MS 39703-0045
PO BOX 46, COLUMBUS, MS 39703-0046
PO BOX 47, COLUMBUS, MS 39703-0047
PO BOX 48, COLUMBUS, MS 39703-0048
PO BOX 49, COLUMBUS, MS 39703-0049
PO BOX 50, COLUMBUS, MS 39703-0050
PO BOX 51, COLUMBUS, MS 39703-0051
PO BOX 52, COLUMBUS, MS 39703-0052
PO BOX 53, COLUMBUS, MS 39703-0053
PO BOX 54, COLUMBUS, MS 39703-0054
PO BOX 55, COLUMBUS, MS 39703-0055
PO BOX 56, COLUMBUS, MS 39703-0056
PO BOX 57, COLUMBUS, MS 39703-0057
PO BOX 58, COLUMBUS, MS 39703-0058
PO BOX 59, COLUMBUS, MS 39703-0059
PO BOX 60, COLUMBUS, MS 39703-0060
PO BOX 61, COLUMBUS, MS 39703-0061
PO BOX 62, COLUMBUS, MS 39703-0062
PO BOX 63, COLUMBUS, MS 39703-0063
PO BOX 64, COLUMBUS, MS 39703-0064
PO BOX 65, COLUMBUS, MS 39703-0065
PO BOX 66, COLUMBUS, MS 39703-0066
PO BOX 67, COLUMBUS, MS 39703-0067
PO BOX 68, COLUMBUS, MS 39703-0068
PO BOX 69, COLUMBUS, MS 39703-0069
PO BOX 70, COLUMBUS, MS 39703-0070
PO BOX 71, COLUMBUS, MS 39703-0071
PO BOX 72, COLUMBUS, MS 39703-0072
PO BOX 73, COLUMBUS, MS 39703-0073
PO BOX 74, COLUMBUS, MS 39703-0074
PO BOX 75, COLUMBUS, MS 39703-0075
PO BOX 76, COLUMBUS, MS 39703-0076
PO BOX 77, COLUMBUS, MS 39703-0077
PO BOX 78, COLUMBUS, MS 39703-0078
PO BOX 79, COLUMBUS, MS 39703-0079
PO BOX 80, COLUMBUS, MS 39703-0080
PO BOX 81, COLUMBUS, MS 39703-0081
PO BOX 82, COLUMBUS, MS 39703-0082
PO BOX 83, COLUMBUS, MS 39703-0083
PO BOX 84, COLUMBUS, MS 39703-0084
PO BOX 85, COLUMBUS, MS 39703-0085
PO BOX 86, COLUMBUS, MS 39703-0086
PO BOX 87, COLUMBUS, MS 39703-0087
PO BOX 88, COLUMBUS, MS 39703-0088
PO BOX 89, COLUMBUS, MS 39703-0089
PO BOX 90, COLUMBUS, MS 39703-0090
PO BOX 91, COLUMBUS, MS 39703-0091
PO BOX 92, COLUMBUS, MS 39703-0092
PO BOX 93, COLUMBUS, MS 39703-0093
PO BOX 94, COLUMBUS, MS 39703-0094
PO BOX 95, COLUMBUS, MS 39703-0095
PO BOX 96, COLUMBUS, MS 39703-0096
PO BOX 97, COLUMBUS, MS 39703-0097
PO BOX 98, COLUMBUS, MS 39703-0098
PO BOX 99, COLUMBUS, MS 39703-0099
PO BOX 100, COLUMBUS, MS 39703-0100
PO BOX 101, COLUMBUS, MS 39703-0101
PO BOX 102, COLUMBUS, MS 39703-0102
PO BOX 103, COLUMBUS, MS 39703-0103
PO BOX 104, COLUMBUS, MS 39703-0104
PO BOX 105, COLUMBUS, MS 39703-0105
PO BOX 106, COLUMBUS, MS 39703-0106
PO BOX 107, COLUMBUS, MS 39703-0107
PO BOX 108, COLUMBUS, MS 39703-0108
PO BOX 109, COLUMBUS, MS 39703-0109
PO BOX 110, COLUMBUS, MS 39703-0110
PO BOX 111, COLUMBUS, MS 39703-0111
PO BOX 112, COLUMBUS, MS 39703-0112
PO BOX 113, COLUMBUS, MS 39703-0113
PO BOX 114, COLUMBUS, MS 39703-0114
PO BOX 115, COLUMBUS, MS 39703-0115
PO BOX 116, COLUMBUS, MS 39703-0116
PO BOX 117, COLUMBUS, MS 39703-0117
PO BOX 118, COLUMBUS, MS 39703-0118
PO BOX 119, COLUMBUS, MS 39703-0119
PO BOX 120, COLUMBUS, MS 39703-0120
PO BOX 121, COLUMBUS, MS 39703-0121
PO BOX 122, COLUMBUS, MS 39703-0122
PO BOX 123, COLUMBUS, MS 39703-0123
PO BOX 124, COLUMBUS, MS 39703-0124
PO BOX 125, COLUMBUS, MS 39703-0125
PO BOX 126, COLUMBUS, MS 39703-0126
PO BOX 127, COLUMBUS, MS 39703-0127
PO BOX 128, COLUMBUS, MS 39703-0128
PO BOX 129, COLUMBUS, MS 39703-0129
PO BOX 130, COLUMBUS, MS 39703-0130
PO BOX 131, COLUMBUS, MS 39703-0131
PO BOX 132, COLUMBUS, MS 39703-0132
PO BOX 133, COLUMBUS, MS 39703-0133
PO BOX 134, COLUMBUS, MS 39703-0134
PO BOX 135, COLUMBUS, MS 39703-0135
PO BOX 136, COLUMBUS, MS 39703-0136
PO BOX 137, COLUMBUS, MS 39703-0137
PO BOX 138, COLUMBUS, MS 39703-0138
PO BOX 139, COLUMBUS, MS 39703-0139
PO BOX 140, COLUMBUS, MS 39703-0140
PO BOX 141, COLUMBUS, MS 39703-0141
PO BOX 142, COLUMBUS, MS 39703-0142
PO BOX 143, COLUMBUS, MS 39703-0143
PO BOX 144, COLUMBUS, MS 39703-0144
PO BOX 145, COLUMBUS, MS 39703-0145
PO BOX 146, COLUMBUS, MS 39703-0146
PO BOX 147, COLUMBUS, MS 39703-0147
PO BOX 148, COLUMBUS, MS 39703-0148
PO BOX 149, COLUMBUS, MS 39703-0149
PO BOX 150, COLUMBUS, MS 39703-0150
PO BOX 151, COLUMBUS, MS 39703-0151
PO BOX 152, COLUMBUS, MS 39703-0152
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