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 41, RANCHO SANTA FE, CA 92067-0041
PO BOX 42, RANCHO SANTA FE, CA 92067-0042
PO BOX 43, RANCHO SANTA FE, CA 92067-0043
PO BOX 44, RANCHO SANTA FE, CA 92067-0044
PO BOX 45, RANCHO SANTA FE, CA 92067-0045
PO BOX 46, RANCHO SANTA FE, CA 92067-0046
PO BOX 47, RANCHO SANTA FE, CA 92067-0047
PO BOX 48, RANCHO SANTA FE, CA 92067-0048
PO BOX 49, RANCHO SANTA FE, CA 92067-0049
PO BOX 50, RANCHO SANTA FE, CA 92067-0050
PO BOX 51, RANCHO SANTA FE, CA 92067-0051
PO BOX 52, RANCHO SANTA FE, CA 92067-0052
PO BOX 53, RANCHO SANTA FE, CA 92067-0053
PO BOX 54, RANCHO SANTA FE, CA 92067-0054
PO BOX 55, RANCHO SANTA FE, CA 92067-0055
PO BOX 56, RANCHO SANTA FE, CA 92067-0056
PO BOX 57, RANCHO SANTA FE, CA 92067-0057
PO BOX 58, RANCHO SANTA FE, CA 92067-0058
PO BOX 59, RANCHO SANTA FE, CA 92067-0059
PO BOX 60, RANCHO SANTA FE, CA 92067-0060
PO BOX 61, RANCHO SANTA FE, CA 92067-0061
PO BOX 62, RANCHO SANTA FE, CA 92067-0062
PO BOX 63, RANCHO SANTA FE, CA 92067-0063
PO BOX 64, RANCHO SANTA FE, CA 92067-0064
PO BOX 65, RANCHO SANTA FE, CA 92067-0065
PO BOX 66, RANCHO SANTA FE, CA 92067-0066
PO BOX 67, RANCHO SANTA FE, CA 92067-0067
PO BOX 68, RANCHO SANTA FE, CA 92067-0068
PO BOX 69, RANCHO SANTA FE, CA 92067-0069
PO BOX 70, RANCHO SANTA FE, CA 92067-0070
PO BOX 71, RANCHO SANTA FE, CA 92067-0071
PO BOX 72, RANCHO SANTA FE, CA 92067-0072
PO BOX 73, RANCHO SANTA FE, CA 92067-0073
PO BOX 74, RANCHO SANTA FE, CA 92067-0074
PO BOX 75, RANCHO SANTA FE, CA 92067-0075
PO BOX 76, RANCHO SANTA FE, CA 92067-0076
PO BOX 77, RANCHO SANTA FE, CA 92067-0077
PO BOX 78, RANCHO SANTA FE, CA 92067-0078
PO BOX 79, RANCHO SANTA FE, CA 92067-0079
PO BOX 80, RANCHO SANTA FE, CA 92067-0080
PO BOX 81, RANCHO SANTA FE, CA 92067-0081
PO BOX 82, RANCHO SANTA FE, CA 92067-0082
PO BOX 83, RANCHO SANTA FE, CA 92067-0083
PO BOX 84, RANCHO SANTA FE, CA 92067-0084
PO BOX 85, RANCHO SANTA FE, CA 92067-0085
PO BOX 86, RANCHO SANTA FE, CA 92067-0086
PO BOX 87, RANCHO SANTA FE, CA 92067-0087
PO BOX 88, RANCHO SANTA FE, CA 92067-0088
PO BOX 89, RANCHO SANTA FE, CA 92067-0089
PO BOX 90, RANCHO SANTA FE, CA 92067-0090
PO BOX 91, RANCHO SANTA FE, CA 92067-0091
PO BOX 92, RANCHO SANTA FE, CA 92067-0092
PO BOX 93, RANCHO SANTA FE, CA 92067-0093
PO BOX 94, RANCHO SANTA FE, CA 92067-0094
PO BOX 95, RANCHO SANTA FE, CA 92067-0095
PO BOX 96, RANCHO SANTA FE, CA 92067-0096
PO BOX 97, RANCHO SANTA FE, CA 92067-0097
PO BOX 98, RANCHO SANTA FE, CA 92067-0098
PO BOX 99, RANCHO SANTA FE, CA 92067-0099
PO BOX 100, RANCHO SANTA FE, CA 92067-0100
PO BOX 101, RANCHO SANTA FE, CA 92067-0101
PO BOX 102, RANCHO SANTA FE, CA 92067-0102
PO BOX 103, RANCHO SANTA FE, CA 92067-0103
PO BOX 104, RANCHO SANTA FE, CA 92067-0104
PO BOX 105, RANCHO SANTA FE, CA 92067-0105
PO BOX 106, RANCHO SANTA FE, CA 92067-0106
PO BOX 107, RANCHO SANTA FE, CA 92067-0107
PO BOX 108, RANCHO SANTA FE, CA 92067-0108
PO BOX 109, RANCHO SANTA FE, CA 92067-0109
PO BOX 110, RANCHO SANTA FE, CA 92067-0110
PO BOX 111, RANCHO SANTA FE, CA 92067-0111
PO BOX 112, RANCHO SANTA FE, CA 92067-0112
PO BOX 113, RANCHO SANTA FE, CA 92067-0113
PO BOX 114, RANCHO SANTA FE, CA 92067-0114
PO BOX 115, RANCHO SANTA FE, CA 92067-0115
PO BOX 116, RANCHO SANTA FE, CA 92067-0116
PO BOX 117, RANCHO SANTA FE, CA 92067-0117
PO BOX 118, RANCHO SANTA FE, CA 92067-0118
PO BOX 119, RANCHO SANTA FE, CA 92067-0119
PO BOX 120, RANCHO SANTA FE, CA 92067-0120
PO BOX 121, RANCHO SANTA FE, CA 92067-0121
PO BOX 122, RANCHO SANTA FE, CA 92067-0122
PO BOX 123, RANCHO SANTA FE, CA 92067-0123
PO BOX 124, RANCHO SANTA FE, CA 92067-0124
PO BOX 125, RANCHO SANTA FE, CA 92067-0125
PO BOX 126, RANCHO SANTA FE, CA 92067-0126
PO BOX 127, RANCHO SANTA FE, CA 92067-0127
PO BOX 128, RANCHO SANTA FE, CA 92067-0128
PO BOX 129, RANCHO SANTA FE, CA 92067-0129
PO BOX 130, RANCHO SANTA FE, CA 92067-0130
PO BOX 131, RANCHO SANTA FE, CA 92067-0131
PO BOX 132, RANCHO SANTA FE, CA 92067-0132
PO BOX 133, RANCHO SANTA FE, CA 92067-0133
PO BOX 134, RANCHO SANTA FE, CA 92067-0134
PO BOX 135, RANCHO SANTA FE, CA 92067-0135
PO BOX 136, RANCHO SANTA FE, CA 92067-0136
PO BOX 137, RANCHO SANTA FE, CA 92067-0137
PO BOX 138, RANCHO SANTA FE, CA 92067-0138
PO BOX 139, RANCHO SANTA FE, CA 92067-0139
PO BOX 140, RANCHO SANTA FE, CA 92067-0140
PO BOX 141, RANCHO SANTA FE, CA 92067-0141
PO BOX 142, RANCHO SANTA FE, CA 92067-0142
PO BOX 143, RANCHO SANTA FE, CA 92067-0143
PO BOX 144, RANCHO SANTA FE, CA 92067-0144
PO BOX 145, RANCHO SANTA FE, CA 92067-0145
PO BOX 146, RANCHO SANTA FE, CA 92067-0146
PO BOX 147, RANCHO SANTA FE, CA 92067-0147
PO BOX 148, RANCHO SANTA FE, CA 92067-0148
PO BOX 149, RANCHO SANTA FE, CA 92067-0149
PO BOX 150, RANCHO SANTA FE, CA 92067-0150
PO BOX 151, RANCHO SANTA FE, CA 92067-0151
PO BOX 152, RANCHO SANTA FE, CA 92067-0152
PO BOX 153, RANCHO SANTA FE, CA 92067-0153
PO BOX 154, RANCHO SANTA FE, CA 92067-0154
PO BOX 155, RANCHO SANTA FE, CA 92067-0155
PO BOX 156, RANCHO SANTA FE, CA 92067-0156
PO BOX 157, RANCHO SANTA FE, CA 92067-0157
PO BOX 158, RANCHO SANTA FE, CA 92067-0158
PO BOX 159, RANCHO SANTA FE, CA 92067-0159
PO BOX 160, RANCHO SANTA FE, CA 92067-0160
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