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, EAST HARDWICK, VT 05836-0001
PO BOX 2, EAST HARDWICK, VT 05836-0002
PO BOX 3, EAST HARDWICK, VT 05836-0003
PO BOX 4, EAST HARDWICK, VT 05836-0004
PO BOX 5, EAST HARDWICK, VT 05836-0005
PO BOX 6, EAST HARDWICK, VT 05836-0006
PO BOX 7, EAST HARDWICK, VT 05836-0007
PO BOX 8, EAST HARDWICK, VT 05836-0008
PO BOX 9, EAST HARDWICK, VT 05836-0009
PO BOX 10, EAST HARDWICK, VT 05836-0010
PO BOX 11, EAST HARDWICK, VT 05836-0011
PO BOX 12, EAST HARDWICK, VT 05836-0012
PO BOX 13, EAST HARDWICK, VT 05836-0013
PO BOX 14, EAST HARDWICK, VT 05836-0014
PO BOX 15, EAST HARDWICK, VT 05836-0015
PO BOX 16, EAST HARDWICK, VT 05836-0016
PO BOX 17, EAST HARDWICK, VT 05836-0017
PO BOX 18, EAST HARDWICK, VT 05836-0018
PO BOX 19, EAST HARDWICK, VT 05836-0019
PO BOX 20, EAST HARDWICK, VT 05836-0020
PO BOX 21, EAST HARDWICK, VT 05836-0021
PO BOX 22, EAST HARDWICK, VT 05836-0022
PO BOX 23, EAST HARDWICK, VT 05836-0023
PO BOX 24, EAST HARDWICK, VT 05836-0024
PO BOX 25, EAST HARDWICK, VT 05836-0025
PO BOX 26, EAST HARDWICK, VT 05836-0026
PO BOX 27, EAST HARDWICK, VT 05836-0027
PO BOX 28, EAST HARDWICK, VT 05836-0028
PO BOX 29, EAST HARDWICK, VT 05836-0029
PO BOX 30, EAST HARDWICK, VT 05836-0030
PO BOX 31, EAST HARDWICK, VT 05836-0031
PO BOX 32, EAST HARDWICK, VT 05836-0032
PO BOX 33, EAST HARDWICK, VT 05836-0033
PO BOX 34, EAST HARDWICK, VT 05836-0034
PO BOX 35, EAST HARDWICK, VT 05836-0035
PO BOX 36, EAST HARDWICK, VT 05836-0036
PO BOX 37, EAST HARDWICK, VT 05836-0037
PO BOX 38, EAST HARDWICK, VT 05836-0038
PO BOX 39, EAST HARDWICK, VT 05836-0039
PO BOX 40, EAST HARDWICK, VT 05836-0040
PO BOX 41, EAST HARDWICK, VT 05836-0041
PO BOX 42, EAST HARDWICK, VT 05836-0042
PO BOX 43, EAST HARDWICK, VT 05836-0043
PO BOX 44, EAST HARDWICK, VT 05836-0044
PO BOX 45, EAST HARDWICK, VT 05836-0045
PO BOX 46, EAST HARDWICK, VT 05836-0046
PO BOX 47, EAST HARDWICK, VT 05836-0047
PO BOX 48, EAST HARDWICK, VT 05836-0048
PO BOX 49, EAST HARDWICK, VT 05836-0049
PO BOX 50, EAST HARDWICK, VT 05836-0050
PO BOX 51, EAST HARDWICK, VT 05836-0051
PO BOX 52, EAST HARDWICK, VT 05836-0052
PO BOX 53, EAST HARDWICK, VT 05836-0053
PO BOX 54, EAST HARDWICK, VT 05836-0054
PO BOX 55, EAST HARDWICK, VT 05836-0055
PO BOX 56, EAST HARDWICK, VT 05836-0056
PO BOX 57, EAST HARDWICK, VT 05836-0057
PO BOX 58, EAST HARDWICK, VT 05836-0058
PO BOX 59, EAST HARDWICK, VT 05836-0059
PO BOX 60, EAST HARDWICK, VT 05836-0060
PO BOX 61, EAST HARDWICK, VT 05836-0061
PO BOX 62, EAST HARDWICK, VT 05836-0062
PO BOX 63, EAST HARDWICK, VT 05836-0063
PO BOX 64, EAST HARDWICK, VT 05836-0064
PO BOX 65, EAST HARDWICK, VT 05836-0065
PO BOX 66, EAST HARDWICK, VT 05836-0066
PO BOX 67, EAST HARDWICK, VT 05836-0067
PO BOX 68, EAST HARDWICK, VT 05836-0068
PO BOX 69, EAST HARDWICK, VT 05836-0069
PO BOX 70, EAST HARDWICK, VT 05836-0070
PO BOX 71, EAST HARDWICK, VT 05836-0071
PO BOX 72, EAST HARDWICK, VT 05836-0072
PO BOX 73, EAST HARDWICK, VT 05836-0073
PO BOX 74, EAST HARDWICK, VT 05836-0074
PO BOX 75, EAST HARDWICK, VT 05836-0075
PO BOX 76, EAST HARDWICK, VT 05836-0076
PO BOX 77, EAST HARDWICK, VT 05836-0077
PO BOX 78, EAST HARDWICK, VT 05836-0078
PO BOX 79, EAST HARDWICK, VT 05836-0079
PO BOX 80, EAST HARDWICK, VT 05836-0080
PO BOX 81, EAST HARDWICK, VT 05836-0081
PO BOX 82, EAST HARDWICK, VT 05836-0082
PO BOX 83, EAST HARDWICK, VT 05836-0083
PO BOX 84, EAST HARDWICK, VT 05836-0084
PO BOX 85, EAST HARDWICK, VT 05836-0085
PO BOX 86, EAST HARDWICK, VT 05836-0086
PO BOX 87, EAST HARDWICK, VT 05836-0087
PO BOX 88, EAST HARDWICK, VT 05836-0088
PO BOX 89, EAST HARDWICK, VT 05836-0089
PO BOX 90, EAST HARDWICK, VT 05836-0090
PO BOX 91, EAST HARDWICK, VT 05836-0091
PO BOX 92, EAST HARDWICK, VT 05836-0092
PO BOX 93, EAST HARDWICK, VT 05836-0093
PO BOX 94, EAST HARDWICK, VT 05836-0094
PO BOX 95, EAST HARDWICK, VT 05836-0095
PO BOX 96, EAST HARDWICK, VT 05836-0096
PO BOX 97, EAST HARDWICK, VT 05836-0097
PO BOX 98, EAST HARDWICK, VT 05836-0098
PO BOX 99, EAST HARDWICK, VT 05836-0099
PO BOX 100, EAST HARDWICK, VT 05836-0100
PO BOX 101, EAST HARDWICK, VT 05836-0101
PO BOX 102, EAST HARDWICK, VT 05836-0102
PO BOX 103, EAST HARDWICK, VT 05836-0103
PO BOX 104, EAST HARDWICK, VT 05836-0104
PO BOX 105, EAST HARDWICK, VT 05836-0105
PO BOX 106, EAST HARDWICK, VT 05836-0106
PO BOX 107, EAST HARDWICK, VT 05836-0107
PO BOX 108, EAST HARDWICK, VT 05836-0108
PO BOX 109, EAST HARDWICK, VT 05836-0109
PO BOX 110, EAST HARDWICK, VT 05836-0110
PO BOX 111, EAST HARDWICK, VT 05836-0111
PO BOX 112, EAST HARDWICK, VT 05836-0112
PO BOX 113, EAST HARDWICK, VT 05836-0113
PO BOX 114, EAST HARDWICK, VT 05836-0114
PO BOX 115, EAST HARDWICK, VT 05836-0115
PO BOX 116, EAST HARDWICK, VT 05836-0116
PO BOX 117, EAST HARDWICK, VT 05836-0117
PO BOX 118, EAST HARDWICK, VT 05836-0118
PO BOX 119, EAST HARDWICK, VT 05836-0119
PO BOX 120, EAST HARDWICK, VT 05836-0120
PO BOX 121, EAST HARDWICK, VT 05836-0121
PO BOX 122, EAST HARDWICK, VT 05836-0122
PO BOX 123, EAST HARDWICK, VT 05836-0123
PO BOX 124, EAST HARDWICK, VT 05836-0124
PO BOX 125, EAST HARDWICK, VT 05836-0125
PO BOX 126, EAST HARDWICK, VT 05836-0126
PO BOX 127, EAST HARDWICK, VT 05836-0127
PO BOX 128, EAST HARDWICK, VT 05836-0128
PO BOX 129, EAST HARDWICK, VT 05836-0129
PO BOX 130, EAST HARDWICK, VT 05836-0130
PO BOX 131, EAST HARDWICK, VT 05836-0131
PO BOX 132, EAST HARDWICK, VT 05836-0132
PO BOX 133, EAST HARDWICK, VT 05836-0133
PO BOX 134, EAST HARDWICK, VT 05836-0134
PO BOX 135, EAST HARDWICK, VT 05836-0135
PO BOX 136, EAST HARDWICK, VT 05836-0136
PO BOX 137, EAST HARDWICK, VT 05836-0137
PO BOX 138, EAST HARDWICK, VT 05836-0138
PO BOX 139, EAST HARDWICK, VT 05836-0139
PO BOX 140, EAST HARDWICK, VT 05836-0140
PO BOX 141, EAST HARDWICK, VT 05836-0141
PO BOX 142, EAST HARDWICK, VT 05836-0142
PO BOX 143, EAST HARDWICK, VT 05836-0143
PO BOX 144, EAST HARDWICK, VT 05836-0144
PO BOX 145, EAST HARDWICK, VT 05836-0145
PO BOX 146, EAST HARDWICK, VT 05836-0146
PO BOX 147, EAST HARDWICK, VT 05836-0147
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