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 3, LONG BRANCH, NJ 07740-0003
PO BOX 4, LONG BRANCH, NJ 07740-0004
PO BOX 5, LONG BRANCH, NJ 07740-0005
PO BOX 6, LONG BRANCH, NJ 07740-0006
PO BOX 7, LONG BRANCH, NJ 07740-0007
PO BOX 8, LONG BRANCH, NJ 07740-0008
PO BOX 9, LONG BRANCH, NJ 07740-0009
PO BOX 10, LONG BRANCH, NJ 07740-0010
PO BOX 11, LONG BRANCH, NJ 07740-0011
PO BOX 12, LONG BRANCH, NJ 07740-0012
PO BOX 13, LONG BRANCH, NJ 07740-0013
PO BOX 14, LONG BRANCH, NJ 07740-0014
PO BOX 15, LONG BRANCH, NJ 07740-0015
PO BOX 16, LONG BRANCH, NJ 07740-0016
PO BOX 17, LONG BRANCH, NJ 07740-0017
PO BOX 18, LONG BRANCH, NJ 07740-0018
PO BOX 19, LONG BRANCH, NJ 07740-0019
PO BOX 20, LONG BRANCH, NJ 07740-0020
PO BOX 21, LONG BRANCH, NJ 07740-0021
PO BOX 22, LONG BRANCH, NJ 07740-0022
PO BOX 23, LONG BRANCH, NJ 07740-0023
PO BOX 24, LONG BRANCH, NJ 07740-0024
PO BOX 25, LONG BRANCH, NJ 07740-0025
PO BOX 26, LONG BRANCH, NJ 07740-0026
PO BOX 27, LONG BRANCH, NJ 07740-0027
PO BOX 28, LONG BRANCH, NJ 07740-0028
PO BOX 29, LONG BRANCH, NJ 07740-0029
PO BOX 30, LONG BRANCH, NJ 07740-0030
PO BOX 31, LONG BRANCH, NJ 07740-0031
PO BOX 32, LONG BRANCH, NJ 07740-0032
PO BOX 33, LONG BRANCH, NJ 07740-0033
PO BOX 34, LONG BRANCH, NJ 07740-0034
PO BOX 35, LONG BRANCH, NJ 07740-0035
PO BOX 36, LONG BRANCH, NJ 07740-0036
PO BOX 37, LONG BRANCH, NJ 07740-0037
PO BOX 38, LONG BRANCH, NJ 07740-0038
PO BOX 39, LONG BRANCH, NJ 07740-0039
PO BOX 40, LONG BRANCH, NJ 07740-0040
PO BOX 41, LONG BRANCH, NJ 07740-0041
PO BOX 42, LONG BRANCH, NJ 07740-0042
PO BOX 43, LONG BRANCH, NJ 07740-0043
PO BOX 44, LONG BRANCH, NJ 07740-0044
PO BOX 45, LONG BRANCH, NJ 07740-0045
PO BOX 46, LONG BRANCH, NJ 07740-0046
PO BOX 47, LONG BRANCH, NJ 07740-0047
PO BOX 48, LONG BRANCH, NJ 07740-0048
PO BOX 49, LONG BRANCH, NJ 07740-0049
PO BOX 50, LONG BRANCH, NJ 07740-0050
PO BOX 51, LONG BRANCH, NJ 07740-0051
PO BOX 52, LONG BRANCH, NJ 07740-0052
PO BOX 53, LONG BRANCH, NJ 07740-0053
PO BOX 54, LONG BRANCH, NJ 07740-0054
PO BOX 55, LONG BRANCH, NJ 07740-0055
PO BOX 56, LONG BRANCH, NJ 07740-0056
PO BOX 57, LONG BRANCH, NJ 07740-0057
PO BOX 58, LONG BRANCH, NJ 07740-0058
PO BOX 59, LONG BRANCH, NJ 07740-0059
PO BOX 60, LONG BRANCH, NJ 07740-0060
PO BOX 61, LONG BRANCH, NJ 07740-0061
PO BOX 62, LONG BRANCH, NJ 07740-0062
PO BOX 63, LONG BRANCH, NJ 07740-0063
PO BOX 64, LONG BRANCH, NJ 07740-0064
PO BOX 65, LONG BRANCH, NJ 07740-0065
PO BOX 66, LONG BRANCH, NJ 07740-0066
PO BOX 67, LONG BRANCH, NJ 07740-0067
PO BOX 68, LONG BRANCH, NJ 07740-0068
PO BOX 69, LONG BRANCH, NJ 07740-0069
PO BOX 70, LONG BRANCH, NJ 07740-0070
PO BOX 71, LONG BRANCH, NJ 07740-0071
PO BOX 72, LONG BRANCH, NJ 07740-0072
PO BOX 73, LONG BRANCH, NJ 07740-0073
PO BOX 74, LONG BRANCH, NJ 07740-0074
PO BOX 75, LONG BRANCH, NJ 07740-0075
PO BOX 76, LONG BRANCH, NJ 07740-0076
PO BOX 77, LONG BRANCH, NJ 07740-0077
PO BOX 78, LONG BRANCH, NJ 07740-0078
PO BOX 79, LONG BRANCH, NJ 07740-0079
PO BOX 80, LONG BRANCH, NJ 07740-0080
PO BOX 81, LONG BRANCH, NJ 07740-0081
PO BOX 82, LONG BRANCH, NJ 07740-0082
PO BOX 83, LONG BRANCH, NJ 07740-0083
PO BOX 84, LONG BRANCH, NJ 07740-0084
PO BOX 85, LONG BRANCH, NJ 07740-0085
PO BOX 86, LONG BRANCH, NJ 07740-0086
PO BOX 87, LONG BRANCH, NJ 07740-0087
PO BOX 88, LONG BRANCH, NJ 07740-0088
PO BOX 89, LONG BRANCH, NJ 07740-0089
PO BOX 90, LONG BRANCH, NJ 07740-0090
PO BOX 91, LONG BRANCH, NJ 07740-0091
PO BOX 92, LONG BRANCH, NJ 07740-0092
PO BOX 93, LONG BRANCH, NJ 07740-0093
PO BOX 94, LONG BRANCH, NJ 07740-0094
PO BOX 95, LONG BRANCH, NJ 07740-0095
PO BOX 96, LONG BRANCH, NJ 07740-0096
PO BOX 97, LONG BRANCH, NJ 07740-0097
PO BOX 98, LONG BRANCH, NJ 07740-0098
PO BOX 99, LONG BRANCH, NJ 07740-0099
PO BOX 100, LONG BRANCH, NJ 07740-0100
PO BOX 101, LONG BRANCH, NJ 07740-0101
PO BOX 102, LONG BRANCH, NJ 07740-0102
PO BOX 103, LONG BRANCH, NJ 07740-0103
PO BOX 104, LONG BRANCH, NJ 07740-0104
PO BOX 105, LONG BRANCH, NJ 07740-0105
PO BOX 106, LONG BRANCH, NJ 07740-0106
PO BOX 107, LONG BRANCH, NJ 07740-0107
PO BOX 108, LONG BRANCH, NJ 07740-0108
PO BOX 109, LONG BRANCH, NJ 07740-0109
PO BOX 110, LONG BRANCH, NJ 07740-0110
PO BOX 111, LONG BRANCH, NJ 07740-0111
PO BOX 112, LONG BRANCH, NJ 07740-0112
PO BOX 113, LONG BRANCH, NJ 07740-0113
PO BOX 114, LONG BRANCH, NJ 07740-0114
PO BOX 115, LONG BRANCH, NJ 07740-0115
PO BOX 116, LONG BRANCH, NJ 07740-0116
PO BOX 117, LONG BRANCH, NJ 07740-0117
PO BOX 118, LONG BRANCH, NJ 07740-0118
PO BOX 119, LONG BRANCH, NJ 07740-0119
PO BOX 120, LONG BRANCH, NJ 07740-0120
PO BOX 121, LONG BRANCH, NJ 07740-0121
PO BOX 122, LONG BRANCH, NJ 07740-0122
PO BOX 123, LONG BRANCH, NJ 07740-0123
PO BOX 124, LONG BRANCH, NJ 07740-0124
PO BOX 125, LONG BRANCH, NJ 07740-0125
PO BOX 126, LONG BRANCH, NJ 07740-0126
PO BOX 127, LONG BRANCH, NJ 07740-0127
PO BOX 128, LONG BRANCH, NJ 07740-0128
PO BOX 129, LONG BRANCH, NJ 07740-0129
PO BOX 130, LONG BRANCH, NJ 07740-0130
PO BOX 131, LONG BRANCH, NJ 07740-0131
PO BOX 132, LONG BRANCH, NJ 07740-0132
PO BOX 133, LONG BRANCH, NJ 07740-0133
PO BOX 134, LONG BRANCH, NJ 07740-0134
PO BOX 135, LONG BRANCH, NJ 07740-0135
PO BOX 136, LONG BRANCH, NJ 07740-0136
PO BOX 137, LONG BRANCH, NJ 07740-0137
PO BOX 138, LONG BRANCH, NJ 07740-0138
PO BOX 139, LONG BRANCH, NJ 07740-0139
PO BOX 140, LONG BRANCH, NJ 07740-0140
PO BOX 141, LONG BRANCH, NJ 07740-0141
PO BOX 142, LONG BRANCH, NJ 07740-0142
PO BOX 143, LONG BRANCH, NJ 07740-0143
PO BOX 144, LONG BRANCH, NJ 07740-0144
PO BOX 145, LONG BRANCH, NJ 07740-0145
PO BOX 146, LONG BRANCH, NJ 07740-0146
PO BOX 147, LONG BRANCH, NJ 07740-0147
PO BOX 148, LONG BRANCH, NJ 07740-0148
PO BOX 149, LONG BRANCH, NJ 07740-0149
PO BOX 150, LONG BRANCH, NJ 07740-0150
PO BOX 151, LONG BRANCH, NJ 07740-0151
PO BOX 152, LONG BRANCH, NJ 07740-0152
PO BOX 153, LONG BRANCH, NJ 07740-0153
PO BOX 154, LONG BRANCH, NJ 07740-0154
PO BOX 155, LONG BRANCH, NJ 07740-0155
PO BOX 156, LONG BRANCH, NJ 07740-0156
PO BOX 157, LONG BRANCH, NJ 07740-0157
PO BOX 158, LONG BRANCH, NJ 07740-0158
PO BOX 159, LONG BRANCH, NJ 07740-0159
PO BOX 160, LONG BRANCH, NJ 07740-0160
PO BOX 161, LONG BRANCH, NJ 07740-0161
PO BOX 162, LONG BRANCH, NJ 07740-0162
PO BOX 163, LONG BRANCH, NJ 07740-0163
PO BOX 164, LONG BRANCH, NJ 07740-0164
PO BOX 165, LONG BRANCH, NJ 07740-0165
PO BOX 166, LONG BRANCH, NJ 07740-0166
PO BOX 167, LONG BRANCH, NJ 07740-0167
PO BOX 168, LONG BRANCH, NJ 07740-0168
PO BOX 169, LONG BRANCH, NJ 07740-0169
PO BOX 170, LONG BRANCH, NJ 07740-0170
PO BOX 171, LONG BRANCH, NJ 07740-0171
PO BOX 172, LONG BRANCH, NJ 07740-0172
PO BOX 173, LONG BRANCH, NJ 07740-0173
PO BOX 174, LONG BRANCH, NJ 07740-0174
PO BOX 175, LONG BRANCH, NJ 07740-0175
PO BOX 176, LONG BRANCH, NJ 07740-0176
PO BOX 177, LONG BRANCH, NJ 07740-0177
PO BOX 178, LONG BRANCH, NJ 07740-0178
PO BOX 179, LONG BRANCH, NJ 07740-0179
PO BOX 180, LONG BRANCH, NJ 07740-0180
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