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 KENSINGTON, PA 15068-0001
PO BOX 2, NEW KENSINGTON, PA 15068-0002
PO BOX 3, NEW KENSINGTON, PA 15068-0003
PO BOX 4, NEW KENSINGTON, PA 15068-0004
PO BOX 5, NEW KENSINGTON, PA 15068-0005
PO BOX 6, NEW KENSINGTON, PA 15068-0006
PO BOX 7, NEW KENSINGTON, PA 15068-0007
PO BOX 8, NEW KENSINGTON, PA 15068-0008
PO BOX 9, NEW KENSINGTON, PA 15068-0009
PO BOX 10, NEW KENSINGTON, PA 15068-0010
PO BOX 11, NEW KENSINGTON, PA 15068-0011
PO BOX 12, NEW KENSINGTON, PA 15068-0012
PO BOX 13, NEW KENSINGTON, PA 15068-0013
PO BOX 14, NEW KENSINGTON, PA 15068-0014
PO BOX 15, NEW KENSINGTON, PA 15068-0015
PO BOX 16, NEW KENSINGTON, PA 15068-0016
PO BOX 17, NEW KENSINGTON, PA 15068-0017
PO BOX 18, NEW KENSINGTON, PA 15068-0018
PO BOX 19, NEW KENSINGTON, PA 15068-0019
PO BOX 20, NEW KENSINGTON, PA 15068-0020
PO BOX 21, NEW KENSINGTON, PA 15068-0021
PO BOX 22, NEW KENSINGTON, PA 15068-0022
PO BOX 23, NEW KENSINGTON, PA 15068-0023
PO BOX 24, NEW KENSINGTON, PA 15068-0024
PO BOX 25, NEW KENSINGTON, PA 15068-0025
PO BOX 26, NEW KENSINGTON, PA 15068-0026
PO BOX 27, NEW KENSINGTON, PA 15068-0027
PO BOX 28, NEW KENSINGTON, PA 15068-0028
PO BOX 29, NEW KENSINGTON, PA 15068-0029
PO BOX 30, NEW KENSINGTON, PA 15068-0030
PO BOX 31, NEW KENSINGTON, PA 15068-0031
PO BOX 32, NEW KENSINGTON, PA 15068-0032
PO BOX 33, NEW KENSINGTON, PA 15068-0033
PO BOX 34, NEW KENSINGTON, PA 15068-0034
PO BOX 35, NEW KENSINGTON, PA 15068-0035
PO BOX 36, NEW KENSINGTON, PA 15068-0036
PO BOX 37, NEW KENSINGTON, PA 15068-0037
PO BOX 38, NEW KENSINGTON, PA 15068-0038
PO BOX 39, NEW KENSINGTON, PA 15068-0039
PO BOX 40, NEW KENSINGTON, PA 15068-0040
PO BOX 41, NEW KENSINGTON, PA 15068-0041
PO BOX 42, NEW KENSINGTON, PA 15068-0042
PO BOX 43, NEW KENSINGTON, PA 15068-0043
PO BOX 44, NEW KENSINGTON, PA 15068-0044
PO BOX 45, NEW KENSINGTON, PA 15068-0045
PO BOX 46, NEW KENSINGTON, PA 15068-0046
PO BOX 47, NEW KENSINGTON, PA 15068-0047
PO BOX 48, NEW KENSINGTON, PA 15068-0048
PO BOX 49, NEW KENSINGTON, PA 15068-0049
PO BOX 50, NEW KENSINGTON, PA 15068-0050
PO BOX 51, NEW KENSINGTON, PA 15068-0051
PO BOX 52, NEW KENSINGTON, PA 15068-0052
PO BOX 53, NEW KENSINGTON, PA 15068-0053
PO BOX 54, NEW KENSINGTON, PA 15068-0054
PO BOX 55, NEW KENSINGTON, PA 15068-0055
PO BOX 56, NEW KENSINGTON, PA 15068-0056
PO BOX 57, NEW KENSINGTON, PA 15068-0057
PO BOX 58, NEW KENSINGTON, PA 15068-0058
PO BOX 59, NEW KENSINGTON, PA 15068-0059
PO BOX 60, NEW KENSINGTON, PA 15068-0060
PO BOX 61, NEW KENSINGTON, PA 15068-0061
PO BOX 62, NEW KENSINGTON, PA 15068-0062
PO BOX 63, NEW KENSINGTON, PA 15068-0063
PO BOX 64, NEW KENSINGTON, PA 15068-0064
PO BOX 65, NEW KENSINGTON, PA 15068-0065
PO BOX 66, NEW KENSINGTON, PA 15068-0066
PO BOX 67, NEW KENSINGTON, PA 15068-0067
PO BOX 68, NEW KENSINGTON, PA 15068-0068
PO BOX 69, NEW KENSINGTON, PA 15068-0069
PO BOX 70, NEW KENSINGTON, PA 15068-0070
PO BOX 71, NEW KENSINGTON, PA 15068-0071
PO BOX 72, NEW KENSINGTON, PA 15068-0072
PO BOX 73, NEW KENSINGTON, PA 15068-0073
PO BOX 74, NEW KENSINGTON, PA 15068-0074
PO BOX 75, NEW KENSINGTON, PA 15068-0075
PO BOX 76, NEW KENSINGTON, PA 15068-0076
PO BOX 77, NEW KENSINGTON, PA 15068-0077
PO BOX 78, NEW KENSINGTON, PA 15068-0078
PO BOX 79, NEW KENSINGTON, PA 15068-0079
PO BOX 80, NEW KENSINGTON, PA 15068-0080
PO BOX 81, NEW KENSINGTON, PA 15068-0081
PO BOX 82, NEW KENSINGTON, PA 15068-0082
PO BOX 83, NEW KENSINGTON, PA 15068-0083
PO BOX 84, NEW KENSINGTON, PA 15068-0084
PO BOX 85, NEW KENSINGTON, PA 15068-0085
PO BOX 86, NEW KENSINGTON, PA 15068-0086
PO BOX 87, NEW KENSINGTON, PA 15068-0087
PO BOX 88, NEW KENSINGTON, PA 15068-0088
PO BOX 89, NEW KENSINGTON, PA 15068-0089
PO BOX 90, NEW KENSINGTON, PA 15068-0090
PO BOX 91, NEW KENSINGTON, PA 15068-0091
PO BOX 92, NEW KENSINGTON, PA 15068-0092
PO BOX 93, NEW KENSINGTON, PA 15068-0093
PO BOX 94, NEW KENSINGTON, PA 15068-0094
PO BOX 95, NEW KENSINGTON, PA 15068-0095
PO BOX 96, NEW KENSINGTON, PA 15068-0096
PO BOX 97, NEW KENSINGTON, PA 15068-0097
PO BOX 98, NEW KENSINGTON, PA 15068-0098
PO BOX 99, NEW KENSINGTON, PA 15068-0099
PO BOX 100, NEW KENSINGTON, PA 15068-0100
PO BOX 101, NEW KENSINGTON, PA 15068-0101
PO BOX 102, NEW KENSINGTON, PA 15068-0102
PO BOX 103, NEW KENSINGTON, PA 15068-0103
PO BOX 104, NEW KENSINGTON, PA 15068-0104
PO BOX 105, NEW KENSINGTON, PA 15068-0105
PO BOX 106, NEW KENSINGTON, PA 15068-0106
PO BOX 107, NEW KENSINGTON, PA 15068-0107
PO BOX 108, NEW KENSINGTON, PA 15068-0108
PO BOX 109, NEW KENSINGTON, PA 15068-0109
PO BOX 110, NEW KENSINGTON, PA 15068-0110
PO BOX 111, NEW KENSINGTON, PA 15068-0111
PO BOX 112, NEW KENSINGTON, PA 15068-0112
PO BOX 113, NEW KENSINGTON, PA 15068-0113
PO BOX 114, NEW KENSINGTON, PA 15068-0114
PO BOX 115, NEW KENSINGTON, PA 15068-0115
PO BOX 116, NEW KENSINGTON, PA 15068-0116
PO BOX 117, NEW KENSINGTON, PA 15068-0117
PO BOX 118, NEW KENSINGTON, PA 15068-0118
PO BOX 119, NEW KENSINGTON, PA 15068-0119
PO BOX 120, NEW KENSINGTON, PA 15068-0120
PO BOX 121, NEW KENSINGTON, PA 15068-0121
PO BOX 122, NEW KENSINGTON, PA 15068-0122
PO BOX 123, NEW KENSINGTON, PA 15068-0123
PO BOX 124, NEW KENSINGTON, PA 15068-0124
PO BOX 125, NEW KENSINGTON, PA 15068-0125
PO BOX 126, NEW KENSINGTON, PA 15068-0126
PO BOX 127, NEW KENSINGTON, PA 15068-0127
PO BOX 128, NEW KENSINGTON, PA 15068-0128
PO BOX 129, NEW KENSINGTON, PA 15068-0129
PO BOX 130, NEW KENSINGTON, PA 15068-0130
PO BOX 131, NEW KENSINGTON, PA 15068-0131
PO BOX 132, NEW KENSINGTON, PA 15068-0132
PO BOX 133, NEW KENSINGTON, PA 15068-0133
PO BOX 134, NEW KENSINGTON, PA 15068-0134
PO BOX 135, NEW KENSINGTON, PA 15068-0135
PO BOX 136, NEW KENSINGTON, PA 15068-0136
PO BOX 137, NEW KENSINGTON, PA 15068-0137
PO BOX 138, NEW KENSINGTON, PA 15068-0138
PO BOX 139, NEW KENSINGTON, PA 15068-0139
PO BOX 140, NEW KENSINGTON, PA 15068-0140
PO BOX 141, NEW KENSINGTON, PA 15068-0141
PO BOX 142, NEW KENSINGTON, PA 15068-0142
PO BOX 143, NEW KENSINGTON, PA 15068-0143
PO BOX 144, NEW KENSINGTON, PA 15068-0144
PO BOX 145, NEW KENSINGTON, PA 15068-0145
PO BOX 146, NEW KENSINGTON, PA 15068-0146
PO BOX 147, NEW KENSINGTON, PA 15068-0147
PO BOX 148, NEW KENSINGTON, PA 15068-0148
PO BOX 149, NEW KENSINGTON, PA 15068-0149
PO BOX 150, NEW KENSINGTON, PA 15068-0150
PO BOX 151, NEW KENSINGTON, PA 15068-0151
PO BOX 152, NEW KENSINGTON, PA 15068-0152
PO BOX 153, NEW KENSINGTON, PA 15068-0153
PO BOX 154, NEW KENSINGTON, PA 15068-0154
PO BOX 155, NEW KENSINGTON, PA 15068-0155
PO BOX 156, NEW KENSINGTON, PA 15068-0156
PO BOX 157, NEW KENSINGTON, PA 15068-0157
PO BOX 158, NEW KENSINGTON, PA 15068-0158
PO BOX 159, NEW KENSINGTON, PA 15068-0159
PO BOX 160, NEW KENSINGTON, PA 15068-0160
PO BOX 161, NEW KENSINGTON, PA 15068-0161
PO BOX 162, NEW KENSINGTON, PA 15068-0162
PO BOX 163, NEW KENSINGTON, PA 15068-0163
PO BOX 164, NEW KENSINGTON, PA 15068-0164
PO BOX 165, NEW KENSINGTON, PA 15068-0165
PO BOX 166, NEW KENSINGTON, PA 15068-0166
PO BOX 167, NEW KENSINGTON, PA 15068-0167
PO BOX 168, NEW KENSINGTON, PA 15068-0168
PO BOX 169, NEW KENSINGTON, PA 15068-0169
PO BOX 170, NEW KENSINGTON, PA 15068-0170
PO BOX 171, NEW KENSINGTON, PA 15068-0171
PO BOX 172, NEW KENSINGTON, PA 15068-0172
PO BOX 173, NEW KENSINGTON, PA 15068-0173
PO BOX 174, NEW KENSINGTON, PA 15068-0174
PO BOX 175, NEW KENSINGTON, PA 15068-0175
PO BOX 176, NEW KENSINGTON, PA 15068-0176
PO BOX 177, NEW KENSINGTON, PA 15068-0177
PO BOX 178, NEW KENSINGTON, PA 15068-0178
PO BOX 179, NEW KENSINGTON, PA 15068-0179
PO BOX 180, NEW KENSINGTON, PA 15068-0180
PO BOX 181, NEW KENSINGTON, PA 15068-0181
PO BOX 182, NEW KENSINGTON, PA 15068-0182
PO BOX 183, NEW KENSINGTON, PA 15068-0183
PO BOX 184, NEW KENSINGTON, PA 15068-0184
PO BOX 185, NEW KENSINGTON, PA 15068-0185
PO BOX 186, NEW KENSINGTON, PA 15068-0186
PO BOX 187, NEW KENSINGTON, PA 15068-0187
PO BOX 188, NEW KENSINGTON, PA 15068-0188
PO BOX 189, NEW KENSINGTON, PA 15068-0189
PO BOX 190, NEW KENSINGTON, PA 15068-0190
PO BOX 191, NEW KENSINGTON, PA 15068-0191
PO BOX 192, NEW KENSINGTON, PA 15068-0192
PO BOX 193, NEW KENSINGTON, PA 15068-0193
PO BOX 194, NEW KENSINGTON, PA 15068-0194
PO BOX 195, NEW KENSINGTON, PA 15068-0195
PO BOX 196, NEW KENSINGTON, PA 15068-0196
PO BOX 197, NEW KENSINGTON, PA 15068-0197
PO BOX 198, NEW KENSINGTON, PA 15068-0198
PO BOX 199, NEW KENSINGTON, PA 15068-0199
PO BOX 200, NEW KENSINGTON, PA 15068-0200
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