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, AUBURN, ME 04212-0001
PO BOX 2, AUBURN, ME 04212-0002
PO BOX 3, AUBURN, ME 04212-0003
PO BOX 4, AUBURN, ME 04212-0004
PO BOX 5, AUBURN, ME 04212-0005
PO BOX 6, AUBURN, ME 04212-0006
PO BOX 7, AUBURN, ME 04212-0007
PO BOX 8, AUBURN, ME 04212-0008
PO BOX 9, AUBURN, ME 04212-0009
PO BOX 10, AUBURN, ME 04212-0010
PO BOX 11, AUBURN, ME 04212-0011
PO BOX 12, AUBURN, ME 04212-0012
PO BOX 13, AUBURN, ME 04212-0013
PO BOX 14, AUBURN, ME 04212-0014
PO BOX 15, AUBURN, ME 04212-0015
PO BOX 16, AUBURN, ME 04212-0016
PO BOX 17, AUBURN, ME 04212-0017
PO BOX 18, AUBURN, ME 04212-0018
PO BOX 19, AUBURN, ME 04212-0019
PO BOX 20, AUBURN, ME 04212-0020
PO BOX 21, AUBURN, ME 04212-0021
PO BOX 22, AUBURN, ME 04212-0022
PO BOX 23, AUBURN, ME 04212-0023
PO BOX 24, AUBURN, ME 04212-0024
PO BOX 25, AUBURN, ME 04212-0025
PO BOX 26, AUBURN, ME 04212-0026
PO BOX 27, AUBURN, ME 04212-0027
PO BOX 28, AUBURN, ME 04212-0028
PO BOX 29, AUBURN, ME 04212-0029
PO BOX 30, AUBURN, ME 04212-0030
PO BOX 31, AUBURN, ME 04212-0031
PO BOX 32, AUBURN, ME 04212-0032
PO BOX 33, AUBURN, ME 04212-0033
PO BOX 34, AUBURN, ME 04212-0034
PO BOX 35, AUBURN, ME 04212-0035
PO BOX 36, AUBURN, ME 04212-0036
PO BOX 37, AUBURN, ME 04212-0037
PO BOX 38, AUBURN, ME 04212-0038
PO BOX 39, AUBURN, ME 04212-0039
PO BOX 40, AUBURN, ME 04212-0040
PO BOX 41, AUBURN, ME 04212-0041
PO BOX 42, AUBURN, ME 04212-0042
PO BOX 43, AUBURN, ME 04212-0043
PO BOX 44, AUBURN, ME 04212-0044
PO BOX 45, AUBURN, ME 04212-0045
PO BOX 46, AUBURN, ME 04212-0046
PO BOX 47, AUBURN, ME 04212-0047
PO BOX 48, AUBURN, ME 04212-0048
PO BOX 49, AUBURN, ME 04212-0049
PO BOX 50, AUBURN, ME 04212-0050
PO BOX 51, AUBURN, ME 04212-0051
PO BOX 52, AUBURN, ME 04212-0052
PO BOX 53, AUBURN, ME 04212-0053
PO BOX 54, AUBURN, ME 04212-0054
PO BOX 55, AUBURN, ME 04212-0055
PO BOX 56, AUBURN, ME 04212-0056
PO BOX 57, AUBURN, ME 04212-0057
PO BOX 58, AUBURN, ME 04212-0058
PO BOX 59, AUBURN, ME 04212-0059
PO BOX 60, AUBURN, ME 04212-0060
PO BOX 61, AUBURN, ME 04212-0061
PO BOX 62, AUBURN, ME 04212-0062
PO BOX 63, AUBURN, ME 04212-0063
PO BOX 64, AUBURN, ME 04212-0064
PO BOX 65, AUBURN, ME 04212-0065
PO BOX 66, AUBURN, ME 04212-0066
PO BOX 67, AUBURN, ME 04212-0067
PO BOX 68, AUBURN, ME 04212-0068
PO BOX 69, AUBURN, ME 04212-0069
PO BOX 70, AUBURN, ME 04212-0070
PO BOX 71, AUBURN, ME 04212-0071
PO BOX 72, AUBURN, ME 04212-0072
PO BOX 73, AUBURN, ME 04212-0073
PO BOX 74, AUBURN, ME 04212-0074
PO BOX 75, AUBURN, ME 04212-0075
PO BOX 76, AUBURN, ME 04212-0076
PO BOX 77, AUBURN, ME 04212-0077
PO BOX 78, AUBURN, ME 04212-0078
PO BOX 79, AUBURN, ME 04212-0079
PO BOX 80, AUBURN, ME 04212-0080
PO BOX 81, AUBURN, ME 04212-0081
PO BOX 82, AUBURN, ME 04212-0082
PO BOX 83, AUBURN, ME 04212-0083
PO BOX 84, AUBURN, ME 04212-0084
PO BOX 85, AUBURN, ME 04212-0085
PO BOX 86, AUBURN, ME 04212-0086
PO BOX 87, AUBURN, ME 04212-0087
PO BOX 88, AUBURN, ME 04212-0088
PO BOX 89, AUBURN, ME 04212-0089
PO BOX 90, AUBURN, ME 04212-0090
PO BOX 91, AUBURN, ME 04212-0091
PO BOX 92, AUBURN, ME 04212-0092
PO BOX 93, AUBURN, ME 04212-0093
PO BOX 94, AUBURN, ME 04212-0094
PO BOX 95, AUBURN, ME 04212-0095
PO BOX 96, AUBURN, ME 04212-0096
PO BOX 97, AUBURN, ME 04212-0097
PO BOX 98, AUBURN, ME 04212-0098
PO BOX 99, AUBURN, ME 04212-0099
PO BOX 100, AUBURN, ME 04212-0100
PO BOX 101, AUBURN, ME 04212-0101
PO BOX 102, AUBURN, ME 04212-0102
PO BOX 103, AUBURN, ME 04212-0103
PO BOX 104, AUBURN, ME 04212-0104
PO BOX 105, AUBURN, ME 04212-0105
PO BOX 106, AUBURN, ME 04212-0106
PO BOX 107, AUBURN, ME 04212-0107
PO BOX 108, AUBURN, ME 04212-0108
PO BOX 109, AUBURN, ME 04212-0109
PO BOX 110, AUBURN, ME 04212-0110
PO BOX 111, AUBURN, ME 04212-0111
PO BOX 112, AUBURN, ME 04212-0112
PO BOX 113, AUBURN, ME 04212-0113
PO BOX 114, AUBURN, ME 04212-0114
PO BOX 115, AUBURN, ME 04212-0115
PO BOX 116, AUBURN, ME 04212-0116
PO BOX 117, AUBURN, ME 04212-0117
PO BOX 118, AUBURN, ME 04212-0118
PO BOX 119, AUBURN, ME 04212-0119
PO BOX 120, AUBURN, ME 04212-0120
PO BOX 121, AUBURN, ME 04212-0121
PO BOX 122, AUBURN, ME 04212-0122
PO BOX 123, AUBURN, ME 04212-0123
PO BOX 124, AUBURN, ME 04212-0124
PO BOX 125, AUBURN, ME 04212-0125
PO BOX 126, AUBURN, ME 04212-0126
PO BOX 127, AUBURN, ME 04212-0127
PO BOX 128, AUBURN, ME 04212-0128
PO BOX 129, AUBURN, ME 04212-0129
PO BOX 130, AUBURN, ME 04212-0130
PO BOX 131, AUBURN, ME 04212-0131
PO BOX 132, AUBURN, ME 04212-0132
PO BOX 133, AUBURN, ME 04212-0133
PO BOX 134, AUBURN, ME 04212-0134
PO BOX 135, AUBURN, ME 04212-0135
PO BOX 136, AUBURN, ME 04212-0136
PO BOX 137, AUBURN, ME 04212-0137
PO BOX 138, AUBURN, ME 04212-0138
PO BOX 139, AUBURN, ME 04212-0139
PO BOX 140, AUBURN, ME 04212-0140
PO BOX 141, AUBURN, ME 04212-0141
PO BOX 142, AUBURN, ME 04212-0142
PO BOX 143, AUBURN, ME 04212-0143
PO BOX 144, AUBURN, ME 04212-0144
PO BOX 145, AUBURN, ME 04212-0145
PO BOX 146, AUBURN, ME 04212-0146
PO BOX 147, AUBURN, ME 04212-0147
PO BOX 148, AUBURN, ME 04212-0148
PO BOX 149, AUBURN, ME 04212-0149
PO BOX 150, AUBURN, ME 04212-0150
PO BOX 151, AUBURN, ME 04212-0151
PO BOX 152, AUBURN, ME 04212-0152
PO BOX 153, AUBURN, ME 04212-0153
PO BOX 154, AUBURN, ME 04212-0154
PO BOX 155, AUBURN, ME 04212-0155
PO BOX 156, AUBURN, ME 04212-0156
PO BOX 157, AUBURN, ME 04212-0157
PO BOX 158, AUBURN, ME 04212-0158
PO BOX 159, AUBURN, ME 04212-0159
PO BOX 160, AUBURN, ME 04212-0160
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