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, NEW DERRY, PA 15671-0001
PO BOX 2, NEW DERRY, PA 15671-0002
PO BOX 3, NEW DERRY, PA 15671-0003
PO BOX 4, NEW DERRY, PA 15671-0004
PO BOX 5, NEW DERRY, PA 15671-0005
PO BOX 6, NEW DERRY, PA 15671-0006
PO BOX 7, NEW DERRY, PA 15671-0007
PO BOX 8, NEW DERRY, PA 15671-0008
PO BOX 9, NEW DERRY, PA 15671-0009
PO BOX 10, NEW DERRY, PA 15671-0010
PO BOX 11, NEW DERRY, PA 15671-0011
PO BOX 12, NEW DERRY, PA 15671-0012
PO BOX 13, NEW DERRY, PA 15671-0013
PO BOX 14, NEW DERRY, PA 15671-0014
PO BOX 15, NEW DERRY, PA 15671-0015
PO BOX 16, NEW DERRY, PA 15671-0016
PO BOX 17, NEW DERRY, PA 15671-0017
PO BOX 18, NEW DERRY, PA 15671-0018
PO BOX 19, NEW DERRY, PA 15671-0019
PO BOX 20, NEW DERRY, PA 15671-0020
PO BOX 21, NEW DERRY, PA 15671-0021
PO BOX 22, NEW DERRY, PA 15671-0022
PO BOX 23, NEW DERRY, PA 15671-0023
PO BOX 24, NEW DERRY, PA 15671-0024
PO BOX 25, NEW DERRY, PA 15671-0025
PO BOX 26, NEW DERRY, PA 15671-0026
PO BOX 27, NEW DERRY, PA 15671-0027
PO BOX 28, NEW DERRY, PA 15671-0028
PO BOX 29, NEW DERRY, PA 15671-0029
PO BOX 30, NEW DERRY, PA 15671-0030
PO BOX 31, NEW DERRY, PA 15671-0031
PO BOX 32, NEW DERRY, PA 15671-0032
PO BOX 33, NEW DERRY, PA 15671-0033
PO BOX 34, NEW DERRY, PA 15671-0034
PO BOX 35, NEW DERRY, PA 15671-0035
PO BOX 36, NEW DERRY, PA 15671-0036
PO BOX 37, NEW DERRY, PA 15671-0037
PO BOX 38, NEW DERRY, PA 15671-0038
PO BOX 39, NEW DERRY, PA 15671-0039
PO BOX 40, NEW DERRY, PA 15671-0040
PO BOX 41, NEW DERRY, PA 15671-0041
PO BOX 42, NEW DERRY, PA 15671-0042
PO BOX 43, NEW DERRY, PA 15671-0043
PO BOX 44, NEW DERRY, PA 15671-0044
PO BOX 45, NEW DERRY, PA 15671-0045
PO BOX 46, NEW DERRY, PA 15671-0046
PO BOX 47, NEW DERRY, PA 15671-0047
PO BOX 48, NEW DERRY, PA 15671-0048
PO BOX 49, NEW DERRY, PA 15671-0049
PO BOX 50, NEW DERRY, PA 15671-0050
PO BOX 51, NEW DERRY, PA 15671-0051
PO BOX 52, NEW DERRY, PA 15671-0052
PO BOX 53, NEW DERRY, PA 15671-0053
PO BOX 54, NEW DERRY, PA 15671-0054
PO BOX 55, NEW DERRY, PA 15671-0055
PO BOX 56, NEW DERRY, PA 15671-0056
PO BOX 57, NEW DERRY, PA 15671-0057
PO BOX 58, NEW DERRY, PA 15671-0058
PO BOX 59, NEW DERRY, PA 15671-0059
PO BOX 60, NEW DERRY, PA 15671-0060
PO BOX 61, NEW DERRY, PA 15671-0061
PO BOX 62, NEW DERRY, PA 15671-0062
PO BOX 63, NEW DERRY, PA 15671-0063
PO BOX 64, NEW DERRY, PA 15671-0064
PO BOX 65, NEW DERRY, PA 15671-0065
PO BOX 66, NEW DERRY, PA 15671-0066
PO BOX 67, NEW DERRY, PA 15671-0067
PO BOX 68, NEW DERRY, PA 15671-0068
PO BOX 69, NEW DERRY, PA 15671-0069
PO BOX 70, NEW DERRY, PA 15671-0070
PO BOX 71, NEW DERRY, PA 15671-0071
PO BOX 72, NEW DERRY, PA 15671-0072
PO BOX 73, NEW DERRY, PA 15671-0073
PO BOX 74, NEW DERRY, PA 15671-0074
PO BOX 75, NEW DERRY, PA 15671-0075
PO BOX 76, NEW DERRY, PA 15671-0076
PO BOX 77, NEW DERRY, PA 15671-0077
PO BOX 78, NEW DERRY, PA 15671-0078
PO BOX 79, NEW DERRY, PA 15671-0079
PO BOX 80, NEW DERRY, PA 15671-0080
PO BOX 81, NEW DERRY, PA 15671-0081
PO BOX 82, NEW DERRY, PA 15671-0082
PO BOX 83, NEW DERRY, PA 15671-0083
PO BOX 84, NEW DERRY, PA 15671-0084
PO BOX 85, NEW DERRY, PA 15671-0085
PO BOX 86, NEW DERRY, PA 15671-0086
PO BOX 87, NEW DERRY, PA 15671-0087
PO BOX 88, NEW DERRY, PA 15671-0088
PO BOX 89, NEW DERRY, PA 15671-0089
PO BOX 90, NEW DERRY, PA 15671-0090
PO BOX 91, NEW DERRY, PA 15671-0091
PO BOX 92, NEW DERRY, PA 15671-0092
PO BOX 93, NEW DERRY, PA 15671-0093
PO BOX 94, NEW DERRY, PA 15671-0094
PO BOX 95, NEW DERRY, PA 15671-0095
PO BOX 96, NEW DERRY, PA 15671-0096
PO BOX 97, NEW DERRY, PA 15671-0097
PO BOX 98, NEW DERRY, PA 15671-0098
PO BOX 99, NEW DERRY, PA 15671-0099
PO BOX 100, NEW DERRY, PA 15671-0100
PO BOX 101, NEW DERRY, PA 15671-0101
PO BOX 102, NEW DERRY, PA 15671-0102
PO BOX 103, NEW DERRY, PA 15671-0103
PO BOX 104, NEW DERRY, PA 15671-0104
PO BOX 105, NEW DERRY, PA 15671-0105
PO BOX 106, NEW DERRY, PA 15671-0106
PO BOX 107, NEW DERRY, PA 15671-0107
PO BOX 108, NEW DERRY, PA 15671-0108
PO BOX 109, NEW DERRY, PA 15671-0109
PO BOX 110, NEW DERRY, PA 15671-0110
PO BOX 111, NEW DERRY, PA 15671-0111
PO BOX 112, NEW DERRY, PA 15671-0112
PO BOX 113, NEW DERRY, PA 15671-0113
PO BOX 114, NEW DERRY, PA 15671-0114
PO BOX 115, NEW DERRY, PA 15671-0115
PO BOX 116, NEW DERRY, PA 15671-0116
PO BOX 117, NEW DERRY, PA 15671-0117
PO BOX 118, NEW DERRY, PA 15671-0118
PO BOX 119, NEW DERRY, PA 15671-0119
PO BOX 120, NEW DERRY, PA 15671-0120
PO BOX 121, NEW DERRY, PA 15671-0121
PO BOX 122, NEW DERRY, PA 15671-0122
PO BOX 123, NEW DERRY, PA 15671-0123
PO BOX 124, NEW DERRY, PA 15671-0124
PO BOX 125, NEW DERRY, PA 15671-0125
PO BOX 126, NEW DERRY, PA 15671-0126
PO BOX 127, NEW DERRY, PA 15671-0127
PO BOX 128, NEW DERRY, PA 15671-0128
PO BOX 129, NEW DERRY, PA 15671-0129
PO BOX 130, NEW DERRY, PA 15671-0130
PO BOX 131, NEW DERRY, PA 15671-0131
PO BOX 132, NEW DERRY, PA 15671-0132
PO BOX 133, NEW DERRY, PA 15671-0133
PO BOX 134, NEW DERRY, PA 15671-0134
PO BOX 135, NEW DERRY, PA 15671-0135
PO BOX 136, NEW DERRY, PA 15671-0136
PO BOX 137, NEW DERRY, PA 15671-0137
PO BOX 138, NEW DERRY, PA 15671-0138
PO BOX 139, NEW DERRY, PA 15671-0139
PO BOX 140, NEW DERRY, PA 15671-0140
PO BOX 141, NEW DERRY, PA 15671-0141
PO BOX 142, NEW DERRY, PA 15671-0142
PO BOX 143, NEW DERRY, PA 15671-0143
PO BOX 144, NEW DERRY, PA 15671-0144
PO BOX 145, NEW DERRY, PA 15671-0145
PO BOX 146, NEW DERRY, PA 15671-0146
PO BOX 147, NEW DERRY, PA 15671-0147
PO BOX 148, NEW DERRY, PA 15671-0148
PO BOX 149, NEW DERRY, PA 15671-0149
PO BOX 150, NEW DERRY, PA 15671-0150
PO BOX 151, NEW DERRY, PA 15671-0151
PO BOX 152, NEW DERRY, PA 15671-0152
PO BOX 153, NEW DERRY, PA 15671-0153
PO BOX 154, NEW DERRY, PA 15671-0154
PO BOX 155, NEW DERRY, PA 15671-0155
PO BOX 156, NEW DERRY, PA 15671-0156
PO BOX 157, NEW DERRY, PA 15671-0157
PO BOX 158, NEW DERRY, PA 15671-0158
PO BOX 159, NEW DERRY, PA 15671-0159
PO BOX 160, NEW DERRY, PA 15671-0160
PO BOX 161, NEW DERRY, PA 15671-0161
PO BOX 162, NEW DERRY, PA 15671-0162
PO BOX 163, NEW DERRY, PA 15671-0163
PO BOX 164, NEW DERRY, PA 15671-0164
PO BOX 165, NEW DERRY, PA 15671-0165
PO BOX 166, NEW DERRY, PA 15671-0166
PO BOX 167, NEW DERRY, PA 15671-0167
PO BOX 168, NEW DERRY, PA 15671-0168
PO BOX 169, NEW DERRY, PA 15671-0169
PO BOX 170, NEW DERRY, PA 15671-0170
PO BOX 171, NEW DERRY, PA 15671-0171
PO BOX 172, NEW DERRY, PA 15671-0172
PO BOX 173, NEW DERRY, PA 15671-0173
PO BOX 174, NEW DERRY, PA 15671-0174
PO BOX 175, NEW DERRY, PA 15671-0175
PO BOX 176, NEW DERRY, PA 15671-0176
PO BOX 177, NEW DERRY, PA 15671-0177
PO BOX 178, NEW DERRY, PA 15671-0178
PO BOX 179, NEW DERRY, PA 15671-0179
PO BOX 180, NEW DERRY, PA 15671-0180
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