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, LAKE PROVIDENCE, LA 71254-0001
PO BOX 2, LAKE PROVIDENCE, LA 71254-0002
PO BOX 3, LAKE PROVIDENCE, LA 71254-0003
PO BOX 4, LAKE PROVIDENCE, LA 71254-0004
PO BOX 5, LAKE PROVIDENCE, LA 71254-0005
PO BOX 6, LAKE PROVIDENCE, LA 71254-0006
PO BOX 7, LAKE PROVIDENCE, LA 71254-0007
PO BOX 8, LAKE PROVIDENCE, LA 71254-0008
PO BOX 9, LAKE PROVIDENCE, LA 71254-0009
PO BOX 10, LAKE PROVIDENCE, LA 71254-0010
PO BOX 11, LAKE PROVIDENCE, LA 71254-0011
PO BOX 12, LAKE PROVIDENCE, LA 71254-0012
PO BOX 13, LAKE PROVIDENCE, LA 71254-0013
PO BOX 14, LAKE PROVIDENCE, LA 71254-0014
PO BOX 15, LAKE PROVIDENCE, LA 71254-0015
PO BOX 16, LAKE PROVIDENCE, LA 71254-0016
PO BOX 17, LAKE PROVIDENCE, LA 71254-0017
PO BOX 18, LAKE PROVIDENCE, LA 71254-0018
PO BOX 19, LAKE PROVIDENCE, LA 71254-0019
PO BOX 20, LAKE PROVIDENCE, LA 71254-0020
PO BOX 21, LAKE PROVIDENCE, LA 71254-0021
PO BOX 22, LAKE PROVIDENCE, LA 71254-0022
PO BOX 23, LAKE PROVIDENCE, LA 71254-0023
PO BOX 24, LAKE PROVIDENCE, LA 71254-0024
PO BOX 25, LAKE PROVIDENCE, LA 71254-0025
PO BOX 26, LAKE PROVIDENCE, LA 71254-0026
PO BOX 27, LAKE PROVIDENCE, LA 71254-0027
PO BOX 28, LAKE PROVIDENCE, LA 71254-0028
PO BOX 29, LAKE PROVIDENCE, LA 71254-0029
PO BOX 30, LAKE PROVIDENCE, LA 71254-0030
PO BOX 31, LAKE PROVIDENCE, LA 71254-0031
PO BOX 32, LAKE PROVIDENCE, LA 71254-0032
PO BOX 33, LAKE PROVIDENCE, LA 71254-0033
PO BOX 34, LAKE PROVIDENCE, LA 71254-0034
PO BOX 35, LAKE PROVIDENCE, LA 71254-0035
PO BOX 36, LAKE PROVIDENCE, LA 71254-0036
PO BOX 37, LAKE PROVIDENCE, LA 71254-0037
PO BOX 38, LAKE PROVIDENCE, LA 71254-0038
PO BOX 39, LAKE PROVIDENCE, LA 71254-0039
PO BOX 40, LAKE PROVIDENCE, LA 71254-0040
PO BOX 41, LAKE PROVIDENCE, LA 71254-0041
PO BOX 42, LAKE PROVIDENCE, LA 71254-0042
PO BOX 43, LAKE PROVIDENCE, LA 71254-0043
PO BOX 44, LAKE PROVIDENCE, LA 71254-0044
PO BOX 45, LAKE PROVIDENCE, LA 71254-0045
PO BOX 46, LAKE PROVIDENCE, LA 71254-0046
PO BOX 47, LAKE PROVIDENCE, LA 71254-0047
PO BOX 48, LAKE PROVIDENCE, LA 71254-0048
PO BOX 49, LAKE PROVIDENCE, LA 71254-0049
PO BOX 50, LAKE PROVIDENCE, LA 71254-0050
PO BOX 51, LAKE PROVIDENCE, LA 71254-0051
PO BOX 52, LAKE PROVIDENCE, LA 71254-0052
PO BOX 53, LAKE PROVIDENCE, LA 71254-0053
PO BOX 54, LAKE PROVIDENCE, LA 71254-0054
PO BOX 55, LAKE PROVIDENCE, LA 71254-0055
PO BOX 56, LAKE PROVIDENCE, LA 71254-0056
PO BOX 57, LAKE PROVIDENCE, LA 71254-0057
PO BOX 58, LAKE PROVIDENCE, LA 71254-0058
PO BOX 59, LAKE PROVIDENCE, LA 71254-0059
PO BOX 60, LAKE PROVIDENCE, LA 71254-0060
PO BOX 61, LAKE PROVIDENCE, LA 71254-0061
PO BOX 62, LAKE PROVIDENCE, LA 71254-0062
PO BOX 63, LAKE PROVIDENCE, LA 71254-0063
PO BOX 64, LAKE PROVIDENCE, LA 71254-0064
PO BOX 65, LAKE PROVIDENCE, LA 71254-0065
PO BOX 66, LAKE PROVIDENCE, LA 71254-0066
PO BOX 67, LAKE PROVIDENCE, LA 71254-0067
PO BOX 68, LAKE PROVIDENCE, LA 71254-0068
PO BOX 69, LAKE PROVIDENCE, LA 71254-0069
PO BOX 70, LAKE PROVIDENCE, LA 71254-0070
PO BOX 71, LAKE PROVIDENCE, LA 71254-0071
PO BOX 72, LAKE PROVIDENCE, LA 71254-0072
PO BOX 73, LAKE PROVIDENCE, LA 71254-0073
PO BOX 74, LAKE PROVIDENCE, LA 71254-0074
PO BOX 75, LAKE PROVIDENCE, LA 71254-0075
PO BOX 76, LAKE PROVIDENCE, LA 71254-0076
PO BOX 77, LAKE PROVIDENCE, LA 71254-0077
PO BOX 78, LAKE PROVIDENCE, LA 71254-0078
PO BOX 79, LAKE PROVIDENCE, LA 71254-0079
PO BOX 80, LAKE PROVIDENCE, LA 71254-0080
PO BOX 81, LAKE PROVIDENCE, LA 71254-0081
PO BOX 82, LAKE PROVIDENCE, LA 71254-0082
PO BOX 83, LAKE PROVIDENCE, LA 71254-0083
PO BOX 84, LAKE PROVIDENCE, LA 71254-0084
PO BOX 85, LAKE PROVIDENCE, LA 71254-0085
PO BOX 86, LAKE PROVIDENCE, LA 71254-0086
PO BOX 87, LAKE PROVIDENCE, LA 71254-0087
PO BOX 88, LAKE PROVIDENCE, LA 71254-0088
PO BOX 89, LAKE PROVIDENCE, LA 71254-0089
PO BOX 90, LAKE PROVIDENCE, LA 71254-0090
PO BOX 91, LAKE PROVIDENCE, LA 71254-0091
PO BOX 92, LAKE PROVIDENCE, LA 71254-0092
PO BOX 93, LAKE PROVIDENCE, LA 71254-0093
PO BOX 94, LAKE PROVIDENCE, LA 71254-0094
PO BOX 95, LAKE PROVIDENCE, LA 71254-0095
PO BOX 96, LAKE PROVIDENCE, LA 71254-0096
PO BOX 97, LAKE PROVIDENCE, LA 71254-0097
PO BOX 98, LAKE PROVIDENCE, LA 71254-0098
PO BOX 99, LAKE PROVIDENCE, LA 71254-0099
PO BOX 100, LAKE PROVIDENCE, LA 71254-0100
PO BOX 101, LAKE PROVIDENCE, LA 71254-0101
PO BOX 102, LAKE PROVIDENCE, LA 71254-0102
PO BOX 103, LAKE PROVIDENCE, LA 71254-0103
PO BOX 104, LAKE PROVIDENCE, LA 71254-0104
PO BOX 105, LAKE PROVIDENCE, LA 71254-0105
PO BOX 106, LAKE PROVIDENCE, LA 71254-0106
PO BOX 107, LAKE PROVIDENCE, LA 71254-0107
PO BOX 108, LAKE PROVIDENCE, LA 71254-0108
PO BOX 109, LAKE PROVIDENCE, LA 71254-0109
PO BOX 110, LAKE PROVIDENCE, LA 71254-0110
PO BOX 111, LAKE PROVIDENCE, LA 71254-0111
PO BOX 112, LAKE PROVIDENCE, LA 71254-0112
PO BOX 113, LAKE PROVIDENCE, LA 71254-0113
PO BOX 114, LAKE PROVIDENCE, LA 71254-0114
PO BOX 115, LAKE PROVIDENCE, LA 71254-0115
PO BOX 116, LAKE PROVIDENCE, LA 71254-0116
PO BOX 117, LAKE PROVIDENCE, LA 71254-0117
PO BOX 118, LAKE PROVIDENCE, LA 71254-0118
PO BOX 119, LAKE PROVIDENCE, LA 71254-0119
PO BOX 120, LAKE PROVIDENCE, LA 71254-0120
PO BOX 121, LAKE PROVIDENCE, LA 71254-0121
PO BOX 122, LAKE PROVIDENCE, LA 71254-0122
PO BOX 123, LAKE PROVIDENCE, LA 71254-0123
PO BOX 124, LAKE PROVIDENCE, LA 71254-0124
PO BOX 125, LAKE PROVIDENCE, LA 71254-0125
PO BOX 126, LAKE PROVIDENCE, LA 71254-0126
PO BOX 127, LAKE PROVIDENCE, LA 71254-0127
PO BOX 128, LAKE PROVIDENCE, LA 71254-0128
PO BOX 129, LAKE PROVIDENCE, LA 71254-0129
PO BOX 130, LAKE PROVIDENCE, LA 71254-0130
PO BOX 131, LAKE PROVIDENCE, LA 71254-0131
PO BOX 132, LAKE PROVIDENCE, LA 71254-0132
PO BOX 133, LAKE PROVIDENCE, LA 71254-0133
PO BOX 134, LAKE PROVIDENCE, LA 71254-0134
PO BOX 135, LAKE PROVIDENCE, LA 71254-0135
PO BOX 136, LAKE PROVIDENCE, LA 71254-0136
PO BOX 137, LAKE PROVIDENCE, LA 71254-0137
PO BOX 138, LAKE PROVIDENCE, LA 71254-0138
PO BOX 139, LAKE PROVIDENCE, LA 71254-0139
PO BOX 140, LAKE PROVIDENCE, LA 71254-0140
PO BOX 141, LAKE PROVIDENCE, LA 71254-0141
PO BOX 142, LAKE PROVIDENCE, LA 71254-0142
PO BOX 143, LAKE PROVIDENCE, LA 71254-0143
PO BOX 144, LAKE PROVIDENCE, LA 71254-0144
PO BOX 145, LAKE PROVIDENCE, LA 71254-0145
PO BOX 146, LAKE PROVIDENCE, LA 71254-0146
PO BOX 147, LAKE PROVIDENCE, LA 71254-0147
PO BOX 148, LAKE PROVIDENCE, LA 71254-0148
PO BOX 149, LAKE PROVIDENCE, LA 71254-0149
PO BOX 150, LAKE PROVIDENCE, LA 71254-0150
PO BOX 151, LAKE PROVIDENCE, LA 71254-0151
PO BOX 152, LAKE PROVIDENCE, LA 71254-0152
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