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, STANFORDVILLE, NY 12581-0001
PO BOX 2, STANFORDVILLE, NY 12581-0002
PO BOX 3, STANFORDVILLE, NY 12581-0003
PO BOX 4, STANFORDVILLE, NY 12581-0004
PO BOX 5, STANFORDVILLE, NY 12581-0005
PO BOX 6, STANFORDVILLE, NY 12581-0006
PO BOX 7, STANFORDVILLE, NY 12581-0007
PO BOX 8, STANFORDVILLE, NY 12581-0008
PO BOX 9, STANFORDVILLE, NY 12581-0009
PO BOX 10, STANFORDVILLE, NY 12581-0010
PO BOX 11, STANFORDVILLE, NY 12581-0011
PO BOX 12, STANFORDVILLE, NY 12581-0012
PO BOX 13, STANFORDVILLE, NY 12581-0013
PO BOX 14, STANFORDVILLE, NY 12581-0014
PO BOX 15, STANFORDVILLE, NY 12581-0015
PO BOX 16, STANFORDVILLE, NY 12581-0016
PO BOX 17, STANFORDVILLE, NY 12581-0017
PO BOX 18, STANFORDVILLE, NY 12581-0018
PO BOX 19, STANFORDVILLE, NY 12581-0019
PO BOX 20, STANFORDVILLE, NY 12581-0020
PO BOX 21, STANFORDVILLE, NY 12581-0021
PO BOX 22, STANFORDVILLE, NY 12581-0022
PO BOX 23, STANFORDVILLE, NY 12581-0023
PO BOX 24, STANFORDVILLE, NY 12581-0024
PO BOX 25, STANFORDVILLE, NY 12581-0025
PO BOX 26, STANFORDVILLE, NY 12581-0026
PO BOX 27, STANFORDVILLE, NY 12581-0027
PO BOX 28, STANFORDVILLE, NY 12581-0028
PO BOX 29, STANFORDVILLE, NY 12581-0029
PO BOX 30, STANFORDVILLE, NY 12581-0030
PO BOX 31, STANFORDVILLE, NY 12581-0031
PO BOX 32, STANFORDVILLE, NY 12581-0032
PO BOX 33, STANFORDVILLE, NY 12581-0033
PO BOX 34, STANFORDVILLE, NY 12581-0034
PO BOX 35, STANFORDVILLE, NY 12581-0035
PO BOX 36, STANFORDVILLE, NY 12581-0036
PO BOX 37, STANFORDVILLE, NY 12581-0037
PO BOX 38, STANFORDVILLE, NY 12581-0038
PO BOX 39, STANFORDVILLE, NY 12581-0039
PO BOX 40, STANFORDVILLE, NY 12581-0040
PO BOX 41, STANFORDVILLE, NY 12581-0041
PO BOX 42, STANFORDVILLE, NY 12581-0042
PO BOX 43, STANFORDVILLE, NY 12581-0043
PO BOX 44, STANFORDVILLE, NY 12581-0044
PO BOX 45, STANFORDVILLE, NY 12581-0045
PO BOX 46, STANFORDVILLE, NY 12581-0046
PO BOX 47, STANFORDVILLE, NY 12581-0047
PO BOX 48, STANFORDVILLE, NY 12581-0048
PO BOX 49, STANFORDVILLE, NY 12581-0049
PO BOX 50, STANFORDVILLE, NY 12581-0050
PO BOX 51, STANFORDVILLE, NY 12581-0051
PO BOX 52, STANFORDVILLE, NY 12581-0052
PO BOX 53, STANFORDVILLE, NY 12581-0053
PO BOX 54, STANFORDVILLE, NY 12581-0054
PO BOX 55, STANFORDVILLE, NY 12581-0055
PO BOX 56, STANFORDVILLE, NY 12581-0056
PO BOX 57, STANFORDVILLE, NY 12581-0057
PO BOX 58, STANFORDVILLE, NY 12581-0058
PO BOX 59, STANFORDVILLE, NY 12581-0059
PO BOX 60, STANFORDVILLE, NY 12581-0060
PO BOX 61, STANFORDVILLE, NY 12581-0061
PO BOX 62, STANFORDVILLE, NY 12581-0062
PO BOX 63, STANFORDVILLE, NY 12581-0063
PO BOX 64, STANFORDVILLE, NY 12581-0064
PO BOX 65, STANFORDVILLE, NY 12581-0065
PO BOX 66, STANFORDVILLE, NY 12581-0066
PO BOX 67, STANFORDVILLE, NY 12581-0067
PO BOX 68, STANFORDVILLE, NY 12581-0068
PO BOX 69, STANFORDVILLE, NY 12581-0069
PO BOX 70, STANFORDVILLE, NY 12581-0070
PO BOX 71, STANFORDVILLE, NY 12581-0071
PO BOX 72, STANFORDVILLE, NY 12581-0072
PO BOX 73, STANFORDVILLE, NY 12581-0073
PO BOX 74, STANFORDVILLE, NY 12581-0074
PO BOX 75, STANFORDVILLE, NY 12581-0075
PO BOX 76, STANFORDVILLE, NY 12581-0076
PO BOX 77, STANFORDVILLE, NY 12581-0077
PO BOX 78, STANFORDVILLE, NY 12581-0078
PO BOX 79, STANFORDVILLE, NY 12581-0079
PO BOX 80, STANFORDVILLE, NY 12581-0080
PO BOX 81, STANFORDVILLE, NY 12581-0081
PO BOX 82, STANFORDVILLE, NY 12581-0082
PO BOX 83, STANFORDVILLE, NY 12581-0083
PO BOX 84, STANFORDVILLE, NY 12581-0084
PO BOX 85, STANFORDVILLE, NY 12581-0085
PO BOX 86, STANFORDVILLE, NY 12581-0086
PO BOX 87, STANFORDVILLE, NY 12581-0087
PO BOX 88, STANFORDVILLE, NY 12581-0088
PO BOX 89, STANFORDVILLE, NY 12581-0089
PO BOX 90, STANFORDVILLE, NY 12581-0090
PO BOX 91, STANFORDVILLE, NY 12581-0091
PO BOX 92, STANFORDVILLE, NY 12581-0092
PO BOX 93, STANFORDVILLE, NY 12581-0093
PO BOX 94, STANFORDVILLE, NY 12581-0094
PO BOX 95, STANFORDVILLE, NY 12581-0095
PO BOX 96, STANFORDVILLE, NY 12581-0096
PO BOX 97, STANFORDVILLE, NY 12581-0097
PO BOX 98, STANFORDVILLE, NY 12581-0098
PO BOX 99, STANFORDVILLE, NY 12581-0099
PO BOX 100, STANFORDVILLE, NY 12581-0100
PO BOX 101, STANFORDVILLE, NY 12581-0101
PO BOX 102, STANFORDVILLE, NY 12581-0102
PO BOX 103, STANFORDVILLE, NY 12581-0103
PO BOX 104, STANFORDVILLE, NY 12581-0104
PO BOX 105, STANFORDVILLE, NY 12581-0105
PO BOX 106, STANFORDVILLE, NY 12581-0106
PO BOX 107, STANFORDVILLE, NY 12581-0107
PO BOX 108, STANFORDVILLE, NY 12581-0108
PO BOX 109, STANFORDVILLE, NY 12581-0109
PO BOX 110, STANFORDVILLE, NY 12581-0110
PO BOX 111, STANFORDVILLE, NY 12581-0111
PO BOX 112, STANFORDVILLE, NY 12581-0112
PO BOX 113, STANFORDVILLE, NY 12581-0113
PO BOX 114, STANFORDVILLE, NY 12581-0114
PO BOX 115, STANFORDVILLE, NY 12581-0115
PO BOX 116, STANFORDVILLE, NY 12581-0116
PO BOX 117, STANFORDVILLE, NY 12581-0117
PO BOX 118, STANFORDVILLE, NY 12581-0118
PO BOX 119, STANFORDVILLE, NY 12581-0119
PO BOX 120, STANFORDVILLE, NY 12581-0120
PO BOX 121, STANFORDVILLE, NY 12581-0121
PO BOX 122, STANFORDVILLE, NY 12581-0122
PO BOX 123, STANFORDVILLE, NY 12581-0123
PO BOX 124, STANFORDVILLE, NY 12581-0124
PO BOX 125, STANFORDVILLE, NY 12581-0125
PO BOX 126, STANFORDVILLE, NY 12581-0126
PO BOX 127, STANFORDVILLE, NY 12581-0127
PO BOX 128, STANFORDVILLE, NY 12581-0128
PO BOX 129, STANFORDVILLE, NY 12581-0129
PO BOX 130, STANFORDVILLE, NY 12581-0130
PO BOX 131, STANFORDVILLE, NY 12581-0131
PO BOX 132, STANFORDVILLE, NY 12581-0132
PO BOX 133, STANFORDVILLE, NY 12581-0133
PO BOX 134, STANFORDVILLE, NY 12581-0134
PO BOX 135, STANFORDVILLE, NY 12581-0135
PO BOX 136, STANFORDVILLE, NY 12581-0136
PO BOX 137, STANFORDVILLE, NY 12581-0137
PO BOX 138, STANFORDVILLE, NY 12581-0138
PO BOX 139, STANFORDVILLE, NY 12581-0139
PO BOX 140, STANFORDVILLE, NY 12581-0140
PO BOX 141, STANFORDVILLE, NY 12581-0141
PO BOX 142, STANFORDVILLE, NY 12581-0142
PO BOX 143, STANFORDVILLE, NY 12581-0143
PO BOX 144, STANFORDVILLE, NY 12581-0144
PO BOX 145, STANFORDVILLE, NY 12581-0145
PO BOX 146, STANFORDVILLE, NY 12581-0146
PO BOX 147, STANFORDVILLE, NY 12581-0147
PO BOX 148, STANFORDVILLE, NY 12581-0148
PO BOX 149, STANFORDVILLE, NY 12581-0149
PO BOX 150, STANFORDVILLE, NY 12581-0150
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