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, OXNARD, CA 93032-0001
PO BOX 2, OXNARD, CA 93032-0002
PO BOX 3, OXNARD, CA 93032-0003
PO BOX 4, OXNARD, CA 93032-0004
PO BOX 5, OXNARD, CA 93032-0005
PO BOX 6, OXNARD, CA 93032-0006
PO BOX 7, OXNARD, CA 93032-0007
PO BOX 8, OXNARD, CA 93032-0008
PO BOX 9, OXNARD, CA 93032-0009
PO BOX 10, OXNARD, CA 93032-0010
PO BOX 11, OXNARD, CA 93032-0011
PO BOX 12, OXNARD, CA 93032-0012
PO BOX 13, OXNARD, CA 93032-0013
PO BOX 14, OXNARD, CA 93032-0014
PO BOX 15, OXNARD, CA 93032-0015
PO BOX 16, OXNARD, CA 93032-0016
PO BOX 17, OXNARD, CA 93032-0017
PO BOX 18, OXNARD, CA 93032-0018
PO BOX 19, OXNARD, CA 93032-0019
PO BOX 20, OXNARD, CA 93032-0020
PO BOX 21, OXNARD, CA 93032-0021
PO BOX 22, OXNARD, CA 93032-0022
PO BOX 23, OXNARD, CA 93032-0023
PO BOX 24, OXNARD, CA 93032-0024
PO BOX 25, OXNARD, CA 93032-0025
PO BOX 26, OXNARD, CA 93032-0026
PO BOX 27, OXNARD, CA 93032-0027
PO BOX 28, OXNARD, CA 93032-0028
PO BOX 29, OXNARD, CA 93032-0029
PO BOX 30, OXNARD, CA 93032-0030
PO BOX 31, OXNARD, CA 93032-0031
PO BOX 32, OXNARD, CA 93032-0032
PO BOX 33, OXNARD, CA 93032-0033
PO BOX 34, OXNARD, CA 93032-0034
PO BOX 35, OXNARD, CA 93032-0035
PO BOX 36, OXNARD, CA 93032-0036
PO BOX 37, OXNARD, CA 93032-0037
PO BOX 38, OXNARD, CA 93032-0038
PO BOX 39, OXNARD, CA 93032-0039
PO BOX 40, OXNARD, CA 93032-0040
PO BOX 41, OXNARD, CA 93032-0041
PO BOX 42, OXNARD, CA 93032-0042
PO BOX 43, OXNARD, CA 93032-0043
PO BOX 44, OXNARD, CA 93032-0044
PO BOX 45, OXNARD, CA 93032-0045
PO BOX 46, OXNARD, CA 93032-0046
PO BOX 47, OXNARD, CA 93032-0047
PO BOX 48, OXNARD, CA 93032-0048
PO BOX 49, OXNARD, CA 93032-0049
PO BOX 50, OXNARD, CA 93032-0050
PO BOX 51, OXNARD, CA 93032-0051
PO BOX 52, OXNARD, CA 93032-0052
PO BOX 53, OXNARD, CA 93032-0053
PO BOX 54, OXNARD, CA 93032-0054
PO BOX 55, OXNARD, CA 93032-0055
PO BOX 56, OXNARD, CA 93032-0056
PO BOX 57, OXNARD, CA 93032-0057
PO BOX 58, OXNARD, CA 93032-0058
PO BOX 59, OXNARD, CA 93032-0059
PO BOX 60, OXNARD, CA 93032-0060
PO BOX 61, OXNARD, CA 93032-0061
PO BOX 62, OXNARD, CA 93032-0062
PO BOX 63, OXNARD, CA 93032-0063
PO BOX 64, OXNARD, CA 93032-0064
PO BOX 65, OXNARD, CA 93032-0065
PO BOX 66, OXNARD, CA 93032-0066
PO BOX 67, OXNARD, CA 93032-0067
PO BOX 68, OXNARD, CA 93032-0068
PO BOX 69, OXNARD, CA 93032-0069
PO BOX 70, OXNARD, CA 93032-0070
PO BOX 71, OXNARD, CA 93032-0071
PO BOX 72, OXNARD, CA 93032-0072
PO BOX 73, OXNARD, CA 93032-0073
PO BOX 74, OXNARD, CA 93032-0074
PO BOX 75, OXNARD, CA 93032-0075
PO BOX 76, OXNARD, CA 93032-0076
PO BOX 77, OXNARD, CA 93032-0077
PO BOX 78, OXNARD, CA 93032-0078
PO BOX 79, OXNARD, CA 93032-0079
PO BOX 80, OXNARD, CA 93032-0080
PO BOX 81, OXNARD, CA 93032-0081
PO BOX 82, OXNARD, CA 93032-0082
PO BOX 83, OXNARD, CA 93032-0083
PO BOX 84, OXNARD, CA 93032-0084
PO BOX 85, OXNARD, CA 93032-0085
PO BOX 86, OXNARD, CA 93032-0086
PO BOX 87, OXNARD, CA 93032-0087
PO BOX 88, OXNARD, CA 93032-0088
PO BOX 89, OXNARD, CA 93032-0089
PO BOX 90, OXNARD, CA 93032-0090
PO BOX 91, OXNARD, CA 93032-0091
PO BOX 92, OXNARD, CA 93032-0092
PO BOX 93, OXNARD, CA 93032-0093
PO BOX 94, OXNARD, CA 93032-0094
PO BOX 95, OXNARD, CA 93032-0095
PO BOX 96, OXNARD, CA 93032-0096
PO BOX 97, OXNARD, CA 93032-0097
PO BOX 98, OXNARD, CA 93032-0098
PO BOX 99, OXNARD, CA 93032-0099
PO BOX 100, OXNARD, CA 93032-0100
PO BOX 101, OXNARD, CA 93032-0101
PO BOX 102, OXNARD, CA 93032-0102
PO BOX 103, OXNARD, CA 93032-0103
PO BOX 104, OXNARD, CA 93032-0104
PO BOX 105, OXNARD, CA 93032-0105
PO BOX 106, OXNARD, CA 93032-0106
PO BOX 107, OXNARD, CA 93032-0107
PO BOX 108, OXNARD, CA 93032-0108
PO BOX 109, OXNARD, CA 93032-0109
PO BOX 110, OXNARD, CA 93032-0110
PO BOX 111, OXNARD, CA 93032-0111
PO BOX 112, OXNARD, CA 93032-0112
PO BOX 113, OXNARD, CA 93032-0113
PO BOX 114, OXNARD, CA 93032-0114
PO BOX 115, OXNARD, CA 93032-0115
PO BOX 116, OXNARD, CA 93032-0116
PO BOX 117, OXNARD, CA 93032-0117
PO BOX 118, OXNARD, CA 93032-0118
PO BOX 119, OXNARD, CA 93032-0119
PO BOX 120, OXNARD, CA 93032-0120
PO BOX 121, OXNARD, CA 93032-0121
PO BOX 122, OXNARD, CA 93032-0122
PO BOX 123, OXNARD, CA 93032-0123
PO BOX 124, OXNARD, CA 93032-0124
PO BOX 125, OXNARD, CA 93032-0125
PO BOX 126, OXNARD, CA 93032-0126
PO BOX 127, OXNARD, CA 93032-0127
PO BOX 128, OXNARD, CA 93032-0128
PO BOX 129, OXNARD, CA 93032-0129
PO BOX 130, OXNARD, CA 93032-0130
PO BOX 131, OXNARD, CA 93032-0131
PO BOX 132, OXNARD, CA 93032-0132
PO BOX 133, OXNARD, CA 93032-0133
PO BOX 134, OXNARD, CA 93032-0134
PO BOX 135, OXNARD, CA 93032-0135
PO BOX 136, OXNARD, CA 93032-0136
PO BOX 137, OXNARD, CA 93032-0137
PO BOX 138, OXNARD, CA 93032-0138
PO BOX 139, OXNARD, CA 93032-0139
PO BOX 140, OXNARD, CA 93032-0140
PO BOX 141, OXNARD, CA 93032-0141
PO BOX 142, OXNARD, CA 93032-0142
PO BOX 143, OXNARD, CA 93032-0143
PO BOX 144, OXNARD, CA 93032-0144
PO BOX 145, OXNARD, CA 93032-0145
PO BOX 146, OXNARD, CA 93032-0146
PO BOX 147, OXNARD, CA 93032-0147
PO BOX 148, OXNARD, CA 93032-0148
PO BOX 149, OXNARD, CA 93032-0149
PO BOX 150, OXNARD, CA 93032-0150
PO BOX 151, OXNARD, CA 93032-0151
PO BOX 152, OXNARD, CA 93032-0152
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