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, LUMMI ISLAND, WA 98262-0001
PO BOX 2, LUMMI ISLAND, WA 98262-0002
PO BOX 3, LUMMI ISLAND, WA 98262-0003
PO BOX 4, LUMMI ISLAND, WA 98262-0004
PO BOX 5, LUMMI ISLAND, WA 98262-0005
PO BOX 6, LUMMI ISLAND, WA 98262-0006
PO BOX 7, LUMMI ISLAND, WA 98262-0007
PO BOX 8, LUMMI ISLAND, WA 98262-0008
PO BOX 9, LUMMI ISLAND, WA 98262-0009
PO BOX 10, LUMMI ISLAND, WA 98262-0010
PO BOX 11, LUMMI ISLAND, WA 98262-0011
PO BOX 12, LUMMI ISLAND, WA 98262-0012
PO BOX 13, LUMMI ISLAND, WA 98262-0013
PO BOX 14, LUMMI ISLAND, WA 98262-0014
PO BOX 15, LUMMI ISLAND, WA 98262-0015
PO BOX 16, LUMMI ISLAND, WA 98262-0016
PO BOX 17, LUMMI ISLAND, WA 98262-0017
PO BOX 18, LUMMI ISLAND, WA 98262-0018
PO BOX 19, LUMMI ISLAND, WA 98262-0019
PO BOX 20, LUMMI ISLAND, WA 98262-0020
PO BOX 21, LUMMI ISLAND, WA 98262-0021
PO BOX 22, LUMMI ISLAND, WA 98262-0022
PO BOX 23, LUMMI ISLAND, WA 98262-0023
PO BOX 24, LUMMI ISLAND, WA 98262-0024
PO BOX 25, LUMMI ISLAND, WA 98262-0025
PO BOX 26, LUMMI ISLAND, WA 98262-0026
PO BOX 27, LUMMI ISLAND, WA 98262-0027
PO BOX 28, LUMMI ISLAND, WA 98262-0028
PO BOX 29, LUMMI ISLAND, WA 98262-0029
PO BOX 30, LUMMI ISLAND, WA 98262-0030
PO BOX 31, LUMMI ISLAND, WA 98262-0031
PO BOX 32, LUMMI ISLAND, WA 98262-0032
PO BOX 33, LUMMI ISLAND, WA 98262-0033
PO BOX 34, LUMMI ISLAND, WA 98262-0034
PO BOX 35, LUMMI ISLAND, WA 98262-0035
PO BOX 36, LUMMI ISLAND, WA 98262-0036
PO BOX 37, LUMMI ISLAND, WA 98262-0037
PO BOX 38, LUMMI ISLAND, WA 98262-0038
PO BOX 39, LUMMI ISLAND, WA 98262-0039
PO BOX 40, LUMMI ISLAND, WA 98262-0040
PO BOX 41, LUMMI ISLAND, WA 98262-0041
PO BOX 42, LUMMI ISLAND, WA 98262-0042
PO BOX 43, LUMMI ISLAND, WA 98262-0043
PO BOX 44, LUMMI ISLAND, WA 98262-0044
PO BOX 45, LUMMI ISLAND, WA 98262-0045
PO BOX 46, LUMMI ISLAND, WA 98262-0046
PO BOX 47, LUMMI ISLAND, WA 98262-0047
PO BOX 48, LUMMI ISLAND, WA 98262-0048
PO BOX 49, LUMMI ISLAND, WA 98262-0049
PO BOX 50, LUMMI ISLAND, WA 98262-0050
PO BOX 51, LUMMI ISLAND, WA 98262-0051
PO BOX 52, LUMMI ISLAND, WA 98262-0052
PO BOX 53, LUMMI ISLAND, WA 98262-0053
PO BOX 54, LUMMI ISLAND, WA 98262-0054
PO BOX 55, LUMMI ISLAND, WA 98262-0055
PO BOX 56, LUMMI ISLAND, WA 98262-0056
PO BOX 57, LUMMI ISLAND, WA 98262-0057
PO BOX 58, LUMMI ISLAND, WA 98262-0058
PO BOX 59, LUMMI ISLAND, WA 98262-0059
PO BOX 60, LUMMI ISLAND, WA 98262-0060
PO BOX 61, LUMMI ISLAND, WA 98262-0061
PO BOX 62, LUMMI ISLAND, WA 98262-0062
PO BOX 63, LUMMI ISLAND, WA 98262-0063
PO BOX 64, LUMMI ISLAND, WA 98262-0064
PO BOX 65, LUMMI ISLAND, WA 98262-0065
PO BOX 66, LUMMI ISLAND, WA 98262-0066
PO BOX 67, LUMMI ISLAND, WA 98262-0067
PO BOX 68, LUMMI ISLAND, WA 98262-0068
PO BOX 69, LUMMI ISLAND, WA 98262-0069
PO BOX 70, LUMMI ISLAND, WA 98262-0070
PO BOX 71, LUMMI ISLAND, WA 98262-0071
PO BOX 72, LUMMI ISLAND, WA 98262-0072
PO BOX 73, LUMMI ISLAND, WA 98262-0073
PO BOX 74, LUMMI ISLAND, WA 98262-0074
PO BOX 75, LUMMI ISLAND, WA 98262-0075
PO BOX 76, LUMMI ISLAND, WA 98262-0076
PO BOX 77, LUMMI ISLAND, WA 98262-0077
PO BOX 78, LUMMI ISLAND, WA 98262-0078
PO BOX 79, LUMMI ISLAND, WA 98262-0079
PO BOX 80, LUMMI ISLAND, WA 98262-0080
PO BOX 81, LUMMI ISLAND, WA 98262-0081
PO BOX 82, LUMMI ISLAND, WA 98262-0082
PO BOX 83, LUMMI ISLAND, WA 98262-0083
PO BOX 84, LUMMI ISLAND, WA 98262-0084
PO BOX 85, LUMMI ISLAND, WA 98262-0085
PO BOX 86, LUMMI ISLAND, WA 98262-0086
PO BOX 87, LUMMI ISLAND, WA 98262-0087
PO BOX 88, LUMMI ISLAND, WA 98262-0088
PO BOX 89, LUMMI ISLAND, WA 98262-0089
PO BOX 90, LUMMI ISLAND, WA 98262-0090
PO BOX 91, LUMMI ISLAND, WA 98262-0091
PO BOX 92, LUMMI ISLAND, WA 98262-0092
PO BOX 93, LUMMI ISLAND, WA 98262-0093
PO BOX 94, LUMMI ISLAND, WA 98262-0094
PO BOX 95, LUMMI ISLAND, WA 98262-0095
PO BOX 96, LUMMI ISLAND, WA 98262-0096
PO BOX 97, LUMMI ISLAND, WA 98262-0097
PO BOX 98, LUMMI ISLAND, WA 98262-0098
PO BOX 99, LUMMI ISLAND, WA 98262-0099
PO BOX 100, LUMMI ISLAND, WA 98262-0100
PO BOX 101, LUMMI ISLAND, WA 98262-0101
PO BOX 102, LUMMI ISLAND, WA 98262-0102
PO BOX 103, LUMMI ISLAND, WA 98262-0103
PO BOX 104, LUMMI ISLAND, WA 98262-0104
PO BOX 105, LUMMI ISLAND, WA 98262-0105
PO BOX 106, LUMMI ISLAND, WA 98262-0106
PO BOX 107, LUMMI ISLAND, WA 98262-0107
PO BOX 108, LUMMI ISLAND, WA 98262-0108
PO BOX 109, LUMMI ISLAND, WA 98262-0109
PO BOX 110, LUMMI ISLAND, WA 98262-0110
PO BOX 111, LUMMI ISLAND, WA 98262-0111
PO BOX 112, LUMMI ISLAND, WA 98262-0112
PO BOX 113, LUMMI ISLAND, WA 98262-0113
PO BOX 114, LUMMI ISLAND, WA 98262-0114
PO BOX 115, LUMMI ISLAND, WA 98262-0115
PO BOX 116, LUMMI ISLAND, WA 98262-0116
PO BOX 117, LUMMI ISLAND, WA 98262-0117
PO BOX 118, LUMMI ISLAND, WA 98262-0118
PO BOX 119, LUMMI ISLAND, WA 98262-0119
PO BOX 120, LUMMI ISLAND, WA 98262-0120
PO BOX 121, LUMMI ISLAND, WA 98262-0121
PO BOX 122, LUMMI ISLAND, WA 98262-0122
PO BOX 123, LUMMI ISLAND, WA 98262-0123
PO BOX 124, LUMMI ISLAND, WA 98262-0124
PO BOX 125, LUMMI ISLAND, WA 98262-0125
PO BOX 126, LUMMI ISLAND, WA 98262-0126
PO BOX 127, LUMMI ISLAND, WA 98262-0127
PO BOX 128, LUMMI ISLAND, WA 98262-0128
PO BOX 129, LUMMI ISLAND, WA 98262-0129
PO BOX 130, LUMMI ISLAND, WA 98262-0130
PO BOX 131, LUMMI ISLAND, WA 98262-0131
PO BOX 132, LUMMI ISLAND, WA 98262-0132
PO BOX 133, LUMMI ISLAND, WA 98262-0133
PO BOX 134, LUMMI ISLAND, WA 98262-0134
PO BOX 135, LUMMI ISLAND, WA 98262-0135
PO BOX 136, LUMMI ISLAND, WA 98262-0136
PO BOX 137, LUMMI ISLAND, WA 98262-0137
PO BOX 138, LUMMI ISLAND, WA 98262-0138
PO BOX 139, LUMMI ISLAND, WA 98262-0139
PO BOX 140, LUMMI ISLAND, WA 98262-0140
PO BOX 141, LUMMI ISLAND, WA 98262-0141
PO BOX 142, LUMMI ISLAND, WA 98262-0142
PO BOX 143, LUMMI ISLAND, WA 98262-0143
PO BOX 144, LUMMI ISLAND, WA 98262-0144
PO BOX 145, LUMMI ISLAND, WA 98262-0145
PO BOX 146, LUMMI ISLAND, WA 98262-0146
PO BOX 147, LUMMI ISLAND, WA 98262-0147
PO BOX 148, LUMMI ISLAND, WA 98262-0148
PO BOX 149, LUMMI ISLAND, WA 98262-0149
PO BOX 150, LUMMI ISLAND, WA 98262-0150
PO BOX 151, LUMMI ISLAND, WA 98262-0151
PO BOX 152, LUMMI ISLAND, WA 98262-0152
PO BOX 153, LUMMI ISLAND, WA 98262-0153
PO BOX 154, LUMMI ISLAND, WA 98262-0154
PO BOX 155, LUMMI ISLAND, WA 98262-0155
PO BOX 156, LUMMI ISLAND, WA 98262-0156
PO BOX 157, LUMMI ISLAND, WA 98262-0157
PO BOX 158, LUMMI ISLAND, WA 98262-0158
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