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 61, NEWTOWN SQUARE, PA 19073-0061
PO BOX 62, NEWTOWN SQUARE, PA 19073-0062
PO BOX 63, NEWTOWN SQUARE, PA 19073-0063
PO BOX 64, NEWTOWN SQUARE, PA 19073-0064
PO BOX 65, NEWTOWN SQUARE, PA 19073-0065
PO BOX 66, NEWTOWN SQUARE, PA 19073-0066
PO BOX 67, NEWTOWN SQUARE, PA 19073-0067
PO BOX 68, NEWTOWN SQUARE, PA 19073-0068
PO BOX 69, NEWTOWN SQUARE, PA 19073-0069
PO BOX 70, NEWTOWN SQUARE, PA 19073-0070
PO BOX 71, NEWTOWN SQUARE, PA 19073-0071
PO BOX 72, NEWTOWN SQUARE, PA 19073-0072
PO BOX 73, NEWTOWN SQUARE, PA 19073-0073
PO BOX 74, NEWTOWN SQUARE, PA 19073-0074
PO BOX 75, NEWTOWN SQUARE, PA 19073-0075
PO BOX 76, NEWTOWN SQUARE, PA 19073-0076
PO BOX 77, NEWTOWN SQUARE, PA 19073-0077
PO BOX 78, NEWTOWN SQUARE, PA 19073-0078
PO BOX 79, NEWTOWN SQUARE, PA 19073-0079
PO BOX 80, NEWTOWN SQUARE, PA 19073-0080
PO BOX 81, NEWTOWN SQUARE, PA 19073-0081
PO BOX 82, NEWTOWN SQUARE, PA 19073-0082
PO BOX 83, NEWTOWN SQUARE, PA 19073-0083
PO BOX 84, NEWTOWN SQUARE, PA 19073-0084
PO BOX 85, NEWTOWN SQUARE, PA 19073-0085
PO BOX 86, NEWTOWN SQUARE, PA 19073-0086
PO BOX 87, NEWTOWN SQUARE, PA 19073-0087
PO BOX 88, NEWTOWN SQUARE, PA 19073-0088
PO BOX 89, NEWTOWN SQUARE, PA 19073-0089
PO BOX 90, NEWTOWN SQUARE, PA 19073-0090
PO BOX 91, NEWTOWN SQUARE, PA 19073-0091
PO BOX 92, NEWTOWN SQUARE, PA 19073-0092
PO BOX 93, NEWTOWN SQUARE, PA 19073-0093
PO BOX 94, NEWTOWN SQUARE, PA 19073-0094
PO BOX 95, NEWTOWN SQUARE, PA 19073-0095
PO BOX 96, NEWTOWN SQUARE, PA 19073-0096
PO BOX 97, NEWTOWN SQUARE, PA 19073-0097
PO BOX 98, NEWTOWN SQUARE, PA 19073-0098
PO BOX 99, NEWTOWN SQUARE, PA 19073-0099
PO BOX 100, NEWTOWN SQUARE, PA 19073-0100
PO BOX 101, NEWTOWN SQUARE, PA 19073-0101
PO BOX 102, NEWTOWN SQUARE, PA 19073-0102
PO BOX 103, NEWTOWN SQUARE, PA 19073-0103
PO BOX 104, NEWTOWN SQUARE, PA 19073-0104
PO BOX 105, NEWTOWN SQUARE, PA 19073-0105
PO BOX 106, NEWTOWN SQUARE, PA 19073-0106
PO BOX 107, NEWTOWN SQUARE, PA 19073-0107
PO BOX 108, NEWTOWN SQUARE, PA 19073-0108
PO BOX 109, NEWTOWN SQUARE, PA 19073-0109
PO BOX 110, NEWTOWN SQUARE, PA 19073-0110
PO BOX 111, NEWTOWN SQUARE, PA 19073-0111
PO BOX 112, NEWTOWN SQUARE, PA 19073-0112
PO BOX 113, NEWTOWN SQUARE, PA 19073-0113
PO BOX 114, NEWTOWN SQUARE, PA 19073-0114
PO BOX 115, NEWTOWN SQUARE, PA 19073-0115
PO BOX 116, NEWTOWN SQUARE, PA 19073-0116
PO BOX 117, NEWTOWN SQUARE, PA 19073-0117
PO BOX 118, NEWTOWN SQUARE, PA 19073-0118
PO BOX 119, NEWTOWN SQUARE, PA 19073-0119
PO BOX 120, NEWTOWN SQUARE, PA 19073-0120
PO BOX 121, NEWTOWN SQUARE, PA 19073-0121
PO BOX 122, NEWTOWN SQUARE, PA 19073-0122
PO BOX 123, NEWTOWN SQUARE, PA 19073-0123
PO BOX 124, NEWTOWN SQUARE, PA 19073-0124
PO BOX 125, NEWTOWN SQUARE, PA 19073-0125
PO BOX 126, NEWTOWN SQUARE, PA 19073-0126
PO BOX 127, NEWTOWN SQUARE, PA 19073-0127
PO BOX 128, NEWTOWN SQUARE, PA 19073-0128
PO BOX 129, NEWTOWN SQUARE, PA 19073-0129
PO BOX 130, NEWTOWN SQUARE, PA 19073-0130
PO BOX 131, NEWTOWN SQUARE, PA 19073-0131
PO BOX 132, NEWTOWN SQUARE, PA 19073-0132
PO BOX 133, NEWTOWN SQUARE, PA 19073-0133
PO BOX 134, NEWTOWN SQUARE, PA 19073-0134
PO BOX 135, NEWTOWN SQUARE, PA 19073-0135
PO BOX 136, NEWTOWN SQUARE, PA 19073-0136
PO BOX 137, NEWTOWN SQUARE, PA 19073-0137
PO BOX 138, NEWTOWN SQUARE, PA 19073-0138
PO BOX 139, NEWTOWN SQUARE, PA 19073-0139
PO BOX 140, NEWTOWN SQUARE, PA 19073-0140
PO BOX 141, NEWTOWN SQUARE, PA 19073-0141
PO BOX 142, NEWTOWN SQUARE, PA 19073-0142
PO BOX 143, NEWTOWN SQUARE, PA 19073-0143
PO BOX 144, NEWTOWN SQUARE, PA 19073-0144
PO BOX 145, NEWTOWN SQUARE, PA 19073-0145
PO BOX 146, NEWTOWN SQUARE, PA 19073-0146
PO BOX 147, NEWTOWN SQUARE, PA 19073-0147
PO BOX 148, NEWTOWN SQUARE, PA 19073-0148
PO BOX 149, NEWTOWN SQUARE, PA 19073-0149
PO BOX 150, NEWTOWN SQUARE, PA 19073-0150
PO BOX 151, NEWTOWN SQUARE, PA 19073-0151
PO BOX 152, NEWTOWN SQUARE, PA 19073-0152
PO BOX 153, NEWTOWN SQUARE, PA 19073-0153
PO BOX 154, NEWTOWN SQUARE, PA 19073-0154
PO BOX 155, NEWTOWN SQUARE, PA 19073-0155
PO BOX 156, NEWTOWN SQUARE, PA 19073-0156
PO BOX 157, NEWTOWN SQUARE, PA 19073-0157
PO BOX 158, NEWTOWN SQUARE, PA 19073-0158
PO BOX 159, NEWTOWN SQUARE, PA 19073-0159
PO BOX 160, NEWTOWN SQUARE, PA 19073-0160
PO BOX 161, NEWTOWN SQUARE, PA 19073-0161
PO BOX 162, NEWTOWN SQUARE, PA 19073-0162
PO BOX 163, NEWTOWN SQUARE, PA 19073-0163
PO BOX 164, NEWTOWN SQUARE, PA 19073-0164
PO BOX 165, NEWTOWN SQUARE, PA 19073-0165
PO BOX 166, NEWTOWN SQUARE, PA 19073-0166
PO BOX 167, NEWTOWN SQUARE, PA 19073-0167
PO BOX 168, NEWTOWN SQUARE, PA 19073-0168
PO BOX 169, NEWTOWN SQUARE, PA 19073-0169
PO BOX 170, NEWTOWN SQUARE, PA 19073-0170
PO BOX 171, NEWTOWN SQUARE, PA 19073-0171
PO BOX 172, NEWTOWN SQUARE, PA 19073-0172
PO BOX 173, NEWTOWN SQUARE, PA 19073-0173
PO BOX 174, NEWTOWN SQUARE, PA 19073-0174
PO BOX 175, NEWTOWN SQUARE, PA 19073-0175
PO BOX 176, NEWTOWN SQUARE, PA 19073-0176
PO BOX 177, NEWTOWN SQUARE, PA 19073-0177
PO BOX 178, NEWTOWN SQUARE, PA 19073-0178
PO BOX 179, NEWTOWN SQUARE, PA 19073-0179
PO BOX 180, NEWTOWN SQUARE, PA 19073-0180
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