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, CATHEDRAL CITY, CA 92235-0001
PO BOX 2, CATHEDRAL CITY, CA 92235-0002
PO BOX 3, CATHEDRAL CITY, CA 92235-0003
PO BOX 4, CATHEDRAL CITY, CA 92235-0004
PO BOX 5, CATHEDRAL CITY, CA 92235-0005
PO BOX 6, CATHEDRAL CITY, CA 92235-0006
PO BOX 7, CATHEDRAL CITY, CA 92235-0007
PO BOX 8, CATHEDRAL CITY, CA 92235-0008
PO BOX 9, CATHEDRAL CITY, CA 92235-0009
PO BOX 10, CATHEDRAL CITY, CA 92235-0010
PO BOX 11, CATHEDRAL CITY, CA 92235-0011
PO BOX 12, CATHEDRAL CITY, CA 92235-0012
PO BOX 13, CATHEDRAL CITY, CA 92235-0013
PO BOX 14, CATHEDRAL CITY, CA 92235-0014
PO BOX 15, CATHEDRAL CITY, CA 92235-0015
PO BOX 16, CATHEDRAL CITY, CA 92235-0016
PO BOX 17, CATHEDRAL CITY, CA 92235-0017
PO BOX 18, CATHEDRAL CITY, CA 92235-0018
PO BOX 19, CATHEDRAL CITY, CA 92235-0019
PO BOX 20, CATHEDRAL CITY, CA 92235-0020
PO BOX 21, CATHEDRAL CITY, CA 92235-0021
PO BOX 22, CATHEDRAL CITY, CA 92235-0022
PO BOX 23, CATHEDRAL CITY, CA 92235-0023
PO BOX 24, CATHEDRAL CITY, CA 92235-0024
PO BOX 25, CATHEDRAL CITY, CA 92235-0025
PO BOX 26, CATHEDRAL CITY, CA 92235-0026
PO BOX 27, CATHEDRAL CITY, CA 92235-0027
PO BOX 28, CATHEDRAL CITY, CA 92235-0028
PO BOX 29, CATHEDRAL CITY, CA 92235-0029
PO BOX 30, CATHEDRAL CITY, CA 92235-0030
PO BOX 31, CATHEDRAL CITY, CA 92235-0031
PO BOX 32, CATHEDRAL CITY, CA 92235-0032
PO BOX 33, CATHEDRAL CITY, CA 92235-0033
PO BOX 34, CATHEDRAL CITY, CA 92235-0034
PO BOX 35, CATHEDRAL CITY, CA 92235-0035
PO BOX 36, CATHEDRAL CITY, CA 92235-0036
PO BOX 37, CATHEDRAL CITY, CA 92235-0037
PO BOX 38, CATHEDRAL CITY, CA 92235-0038
PO BOX 39, CATHEDRAL CITY, CA 92235-0039
PO BOX 40, CATHEDRAL CITY, CA 92235-0040
PO BOX 41, CATHEDRAL CITY, CA 92235-0041
PO BOX 42, CATHEDRAL CITY, CA 92235-0042
PO BOX 43, CATHEDRAL CITY, CA 92235-0043
PO BOX 44, CATHEDRAL CITY, CA 92235-0044
PO BOX 45, CATHEDRAL CITY, CA 92235-0045
PO BOX 46, CATHEDRAL CITY, CA 92235-0046
PO BOX 47, CATHEDRAL CITY, CA 92235-0047
PO BOX 48, CATHEDRAL CITY, CA 92235-0048
PO BOX 49, CATHEDRAL CITY, CA 92235-0049
PO BOX 50, CATHEDRAL CITY, CA 92235-0050
PO BOX 51, CATHEDRAL CITY, CA 92235-0051
PO BOX 52, CATHEDRAL CITY, CA 92235-0052
PO BOX 53, CATHEDRAL CITY, CA 92235-0053
PO BOX 54, CATHEDRAL CITY, CA 92235-0054
PO BOX 55, CATHEDRAL CITY, CA 92235-0055
PO BOX 56, CATHEDRAL CITY, CA 92235-0056
PO BOX 57, CATHEDRAL CITY, CA 92235-0057
PO BOX 58, CATHEDRAL CITY, CA 92235-0058
PO BOX 59, CATHEDRAL CITY, CA 92235-0059
PO BOX 60, CATHEDRAL CITY, CA 92235-0060
PO BOX 61, CATHEDRAL CITY, CA 92235-0061
PO BOX 62, CATHEDRAL CITY, CA 92235-0062
PO BOX 63, CATHEDRAL CITY, CA 92235-0063
PO BOX 64, CATHEDRAL CITY, CA 92235-0064
PO BOX 65, CATHEDRAL CITY, CA 92235-0065
PO BOX 66, CATHEDRAL CITY, CA 92235-0066
PO BOX 67, CATHEDRAL CITY, CA 92235-0067
PO BOX 68, CATHEDRAL CITY, CA 92235-0068
PO BOX 69, CATHEDRAL CITY, CA 92235-0069
PO BOX 70, CATHEDRAL CITY, CA 92235-0070
PO BOX 71, CATHEDRAL CITY, CA 92235-0071
PO BOX 72, CATHEDRAL CITY, CA 92235-0072
PO BOX 73, CATHEDRAL CITY, CA 92235-0073
PO BOX 74, CATHEDRAL CITY, CA 92235-0074
PO BOX 75, CATHEDRAL CITY, CA 92235-0075
PO BOX 76, CATHEDRAL CITY, CA 92235-0076
PO BOX 77, CATHEDRAL CITY, CA 92235-0077
PO BOX 78, CATHEDRAL CITY, CA 92235-0078
PO BOX 79, CATHEDRAL CITY, CA 92235-0079
PO BOX 80, CATHEDRAL CITY, CA 92235-0080
PO BOX 81, CATHEDRAL CITY, CA 92235-0081
PO BOX 82, CATHEDRAL CITY, CA 92235-0082
PO BOX 83, CATHEDRAL CITY, CA 92235-0083
PO BOX 84, CATHEDRAL CITY, CA 92235-0084
PO BOX 85, CATHEDRAL CITY, CA 92235-0085
PO BOX 86, CATHEDRAL CITY, CA 92235-0086
PO BOX 87, CATHEDRAL CITY, CA 92235-0087
PO BOX 88, CATHEDRAL CITY, CA 92235-0088
PO BOX 89, CATHEDRAL CITY, CA 92235-0089
PO BOX 90, CATHEDRAL CITY, CA 92235-0090
PO BOX 91, CATHEDRAL CITY, CA 92235-0091
PO BOX 92, CATHEDRAL CITY, CA 92235-0092
PO BOX 93, CATHEDRAL CITY, CA 92235-0093
PO BOX 94, CATHEDRAL CITY, CA 92235-0094
PO BOX 95, CATHEDRAL CITY, CA 92235-0095
PO BOX 96, CATHEDRAL CITY, CA 92235-0096
PO BOX 97, CATHEDRAL CITY, CA 92235-0097
PO BOX 98, CATHEDRAL CITY, CA 92235-0098
PO BOX 99, CATHEDRAL CITY, CA 92235-0099
PO BOX 100, CATHEDRAL CITY, CA 92235-0100
PO BOX 101, CATHEDRAL CITY, CA 92235-0101
PO BOX 102, CATHEDRAL CITY, CA 92235-0102
PO BOX 103, CATHEDRAL CITY, CA 92235-0103
PO BOX 104, CATHEDRAL CITY, CA 92235-0104
PO BOX 105, CATHEDRAL CITY, CA 92235-0105
PO BOX 106, CATHEDRAL CITY, CA 92235-0106
PO BOX 107, CATHEDRAL CITY, CA 92235-0107
PO BOX 108, CATHEDRAL CITY, CA 92235-0108
PO BOX 109, CATHEDRAL CITY, CA 92235-0109
PO BOX 110, CATHEDRAL CITY, CA 92235-0110
PO BOX 111, CATHEDRAL CITY, CA 92235-0111
PO BOX 112, CATHEDRAL CITY, CA 92235-0112
PO BOX 113, CATHEDRAL CITY, CA 92235-0113
PO BOX 114, CATHEDRAL CITY, CA 92235-0114
PO BOX 115, CATHEDRAL CITY, CA 92235-0115
PO BOX 116, CATHEDRAL CITY, CA 92235-0116
PO BOX 117, CATHEDRAL CITY, CA 92235-0117
PO BOX 118, CATHEDRAL CITY, CA 92235-0118
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