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, RANCHO CORDOVA, CA 95741-0001
PO BOX 2, RANCHO CORDOVA, CA 95741-0002
PO BOX 3, RANCHO CORDOVA, CA 95741-0003
PO BOX 4, RANCHO CORDOVA, CA 95741-0004
PO BOX 5, RANCHO CORDOVA, CA 95741-0005
PO BOX 6, RANCHO CORDOVA, CA 95741-0006
PO BOX 7, RANCHO CORDOVA, CA 95741-0007
PO BOX 8, RANCHO CORDOVA, CA 95741-0008
PO BOX 9, RANCHO CORDOVA, CA 95741-0009
PO BOX 10, RANCHO CORDOVA, CA 95741-0010
PO BOX 11, RANCHO CORDOVA, CA 95741-0011
PO BOX 12, RANCHO CORDOVA, CA 95741-0012
PO BOX 13, RANCHO CORDOVA, CA 95741-0013
PO BOX 14, RANCHO CORDOVA, CA 95741-0014
PO BOX 15, RANCHO CORDOVA, CA 95741-0015
PO BOX 16, RANCHO CORDOVA, CA 95741-0016
PO BOX 17, RANCHO CORDOVA, CA 95741-0017
PO BOX 18, RANCHO CORDOVA, CA 95741-0018
PO BOX 19, RANCHO CORDOVA, CA 95741-0019
PO BOX 20, RANCHO CORDOVA, CA 95741-0020
PO BOX 21, RANCHO CORDOVA, CA 95741-0021
PO BOX 22, RANCHO CORDOVA, CA 95741-0022
PO BOX 23, RANCHO CORDOVA, CA 95741-0023
PO BOX 24, RANCHO CORDOVA, CA 95741-0024
PO BOX 25, RANCHO CORDOVA, CA 95741-0025
PO BOX 26, RANCHO CORDOVA, CA 95741-0026
PO BOX 27, RANCHO CORDOVA, CA 95741-0027
PO BOX 28, RANCHO CORDOVA, CA 95741-0028
PO BOX 29, RANCHO CORDOVA, CA 95741-0029
PO BOX 30, RANCHO CORDOVA, CA 95741-0030
PO BOX 31, RANCHO CORDOVA, CA 95741-0031
PO BOX 32, RANCHO CORDOVA, CA 95741-0032
PO BOX 33, RANCHO CORDOVA, CA 95741-0033
PO BOX 34, RANCHO CORDOVA, CA 95741-0034
PO BOX 35, RANCHO CORDOVA, CA 95741-0035
PO BOX 36, RANCHO CORDOVA, CA 95741-0036
PO BOX 37, RANCHO CORDOVA, CA 95741-0037
PO BOX 38, RANCHO CORDOVA, CA 95741-0038
PO BOX 39, RANCHO CORDOVA, CA 95741-0039
PO BOX 40, RANCHO CORDOVA, CA 95741-0040
PO BOX 41, RANCHO CORDOVA, CA 95741-0041
PO BOX 42, RANCHO CORDOVA, CA 95741-0042
PO BOX 43, RANCHO CORDOVA, CA 95741-0043
PO BOX 44, RANCHO CORDOVA, CA 95741-0044
PO BOX 45, RANCHO CORDOVA, CA 95741-0045
PO BOX 46, RANCHO CORDOVA, CA 95741-0046
PO BOX 47, RANCHO CORDOVA, CA 95741-0047
PO BOX 48, RANCHO CORDOVA, CA 95741-0048
PO BOX 49, RANCHO CORDOVA, CA 95741-0049
PO BOX 50, RANCHO CORDOVA, CA 95741-0050
PO BOX 51, RANCHO CORDOVA, CA 95741-0051
PO BOX 52, RANCHO CORDOVA, CA 95741-0052
PO BOX 53, RANCHO CORDOVA, CA 95741-0053
PO BOX 54, RANCHO CORDOVA, CA 95741-0054
PO BOX 55, RANCHO CORDOVA, CA 95741-0055
PO BOX 56, RANCHO CORDOVA, CA 95741-0056
PO BOX 57, RANCHO CORDOVA, CA 95741-0057
PO BOX 58, RANCHO CORDOVA, CA 95741-0058
PO BOX 59, RANCHO CORDOVA, CA 95741-0059
PO BOX 60, RANCHO CORDOVA, CA 95741-0060
PO BOX 61, RANCHO CORDOVA, CA 95741-0061
PO BOX 62, RANCHO CORDOVA, CA 95741-0062
PO BOX 63, RANCHO CORDOVA, CA 95741-0063
PO BOX 64, RANCHO CORDOVA, CA 95741-0064
PO BOX 65, RANCHO CORDOVA, CA 95741-0065
PO BOX 66, RANCHO CORDOVA, CA 95741-0066
PO BOX 67, RANCHO CORDOVA, CA 95741-0067
PO BOX 68, RANCHO CORDOVA, CA 95741-0068
PO BOX 69, RANCHO CORDOVA, CA 95741-0069
PO BOX 70, RANCHO CORDOVA, CA 95741-0070
PO BOX 71, RANCHO CORDOVA, CA 95741-0071
PO BOX 72, RANCHO CORDOVA, CA 95741-0072
PO BOX 73, RANCHO CORDOVA, CA 95741-0073
PO BOX 74, RANCHO CORDOVA, CA 95741-0074
PO BOX 75, RANCHO CORDOVA, CA 95741-0075
PO BOX 76, RANCHO CORDOVA, CA 95741-0076
PO BOX 77, RANCHO CORDOVA, CA 95741-0077
PO BOX 78, RANCHO CORDOVA, CA 95741-0078
PO BOX 79, RANCHO CORDOVA, CA 95741-0079
PO BOX 80, RANCHO CORDOVA, CA 95741-0080
PO BOX 81, RANCHO CORDOVA, CA 95741-0081
PO BOX 82, RANCHO CORDOVA, CA 95741-0082
PO BOX 83, RANCHO CORDOVA, CA 95741-0083
PO BOX 84, RANCHO CORDOVA, CA 95741-0084
PO BOX 85, RANCHO CORDOVA, CA 95741-0085
PO BOX 86, RANCHO CORDOVA, CA 95741-0086
PO BOX 87, RANCHO CORDOVA, CA 95741-0087
PO BOX 88, RANCHO CORDOVA, CA 95741-0088
PO BOX 89, RANCHO CORDOVA, CA 95741-0089
PO BOX 90, RANCHO CORDOVA, CA 95741-0090
PO BOX 91, RANCHO CORDOVA, CA 95741-0091
PO BOX 92, RANCHO CORDOVA, CA 95741-0092
PO BOX 93, RANCHO CORDOVA, CA 95741-0093
PO BOX 94, RANCHO CORDOVA, CA 95741-0094
PO BOX 95, RANCHO CORDOVA, CA 95741-0095
PO BOX 96, RANCHO CORDOVA, CA 95741-0096
PO BOX 97, RANCHO CORDOVA, CA 95741-0097
PO BOX 98, RANCHO CORDOVA, CA 95741-0098
PO BOX 99, RANCHO CORDOVA, CA 95741-0099
PO BOX 100, RANCHO CORDOVA, CA 95741-0100
PO BOX 101, RANCHO CORDOVA, CA 95741-0101
PO BOX 102, RANCHO CORDOVA, CA 95741-0102
PO BOX 103, RANCHO CORDOVA, CA 95741-0103
PO BOX 104, RANCHO CORDOVA, CA 95741-0104
PO BOX 105, RANCHO CORDOVA, CA 95741-0105
PO BOX 106, RANCHO CORDOVA, CA 95741-0106
PO BOX 107, RANCHO CORDOVA, CA 95741-0107
PO BOX 108, RANCHO CORDOVA, CA 95741-0108
PO BOX 109, RANCHO CORDOVA, CA 95741-0109
PO BOX 110, RANCHO CORDOVA, CA 95741-0110
PO BOX 111, RANCHO CORDOVA, CA 95741-0111
PO BOX 112, RANCHO CORDOVA, CA 95741-0112
PO BOX 113, RANCHO CORDOVA, CA 95741-0113
PO BOX 114, RANCHO CORDOVA, CA 95741-0114
PO BOX 115, RANCHO CORDOVA, CA 95741-0115
PO BOX 116, RANCHO CORDOVA, CA 95741-0116
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