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, CAMPBELLSVILLE, KY 42719-0001
PO BOX 2, CAMPBELLSVILLE, KY 42719-0002
PO BOX 3, CAMPBELLSVILLE, KY 42719-0003
PO BOX 4, CAMPBELLSVILLE, KY 42719-0004
PO BOX 5, CAMPBELLSVILLE, KY 42719-0005
PO BOX 6, CAMPBELLSVILLE, KY 42719-0006
PO BOX 7, CAMPBELLSVILLE, KY 42719-0007
PO BOX 8, CAMPBELLSVILLE, KY 42719-0008
PO BOX 9, CAMPBELLSVILLE, KY 42719-0009
PO BOX 10, CAMPBELLSVILLE, KY 42719-0010
PO BOX 11, CAMPBELLSVILLE, KY 42719-0011
PO BOX 12, CAMPBELLSVILLE, KY 42719-0012
PO BOX 13, CAMPBELLSVILLE, KY 42719-0013
PO BOX 14, CAMPBELLSVILLE, KY 42719-0014
PO BOX 15, CAMPBELLSVILLE, KY 42719-0015
PO BOX 16, CAMPBELLSVILLE, KY 42719-0016
PO BOX 17, CAMPBELLSVILLE, KY 42719-0017
PO BOX 18, CAMPBELLSVILLE, KY 42719-0018
PO BOX 19, CAMPBELLSVILLE, KY 42719-0019
PO BOX 20, CAMPBELLSVILLE, KY 42719-0020
PO BOX 21, CAMPBELLSVILLE, KY 42719-0021
PO BOX 22, CAMPBELLSVILLE, KY 42719-0022
PO BOX 23, CAMPBELLSVILLE, KY 42719-0023
PO BOX 24, CAMPBELLSVILLE, KY 42719-0024
PO BOX 25, CAMPBELLSVILLE, KY 42719-0025
PO BOX 26, CAMPBELLSVILLE, KY 42719-0026
PO BOX 27, CAMPBELLSVILLE, KY 42719-0027
PO BOX 28, CAMPBELLSVILLE, KY 42719-0028
PO BOX 29, CAMPBELLSVILLE, KY 42719-0029
PO BOX 30, CAMPBELLSVILLE, KY 42719-0030
PO BOX 31, CAMPBELLSVILLE, KY 42719-0031
PO BOX 32, CAMPBELLSVILLE, KY 42719-0032
PO BOX 33, CAMPBELLSVILLE, KY 42719-0033
PO BOX 34, CAMPBELLSVILLE, KY 42719-0034
PO BOX 35, CAMPBELLSVILLE, KY 42719-0035
PO BOX 36, CAMPBELLSVILLE, KY 42719-0036
PO BOX 37, CAMPBELLSVILLE, KY 42719-0037
PO BOX 38, CAMPBELLSVILLE, KY 42719-0038
PO BOX 39, CAMPBELLSVILLE, KY 42719-0039
PO BOX 40, CAMPBELLSVILLE, KY 42719-0040
PO BOX 41, CAMPBELLSVILLE, KY 42719-0041
PO BOX 42, CAMPBELLSVILLE, KY 42719-0042
PO BOX 43, CAMPBELLSVILLE, KY 42719-0043
PO BOX 44, CAMPBELLSVILLE, KY 42719-0044
PO BOX 45, CAMPBELLSVILLE, KY 42719-0045
PO BOX 46, CAMPBELLSVILLE, KY 42719-0046
PO BOX 47, CAMPBELLSVILLE, KY 42719-0047
PO BOX 48, CAMPBELLSVILLE, KY 42719-0048
PO BOX 49, CAMPBELLSVILLE, KY 42719-0049
PO BOX 50, CAMPBELLSVILLE, KY 42719-0050
PO BOX 51, CAMPBELLSVILLE, KY 42719-0051
PO BOX 52, CAMPBELLSVILLE, KY 42719-0052
PO BOX 53, CAMPBELLSVILLE, KY 42719-0053
PO BOX 54, CAMPBELLSVILLE, KY 42719-0054
PO BOX 55, CAMPBELLSVILLE, KY 42719-0055
PO BOX 56, CAMPBELLSVILLE, KY 42719-0056
PO BOX 57, CAMPBELLSVILLE, KY 42719-0057
PO BOX 58, CAMPBELLSVILLE, KY 42719-0058
PO BOX 59, CAMPBELLSVILLE, KY 42719-0059
PO BOX 60, CAMPBELLSVILLE, KY 42719-0060
PO BOX 61, CAMPBELLSVILLE, KY 42719-0061
PO BOX 62, CAMPBELLSVILLE, KY 42719-0062
PO BOX 63, CAMPBELLSVILLE, KY 42719-0063
PO BOX 64, CAMPBELLSVILLE, KY 42719-0064
PO BOX 65, CAMPBELLSVILLE, KY 42719-0065
PO BOX 66, CAMPBELLSVILLE, KY 42719-0066
PO BOX 67, CAMPBELLSVILLE, KY 42719-0067
PO BOX 68, CAMPBELLSVILLE, KY 42719-0068
PO BOX 69, CAMPBELLSVILLE, KY 42719-0069
PO BOX 70, CAMPBELLSVILLE, KY 42719-0070
PO BOX 71, CAMPBELLSVILLE, KY 42719-0071
PO BOX 72, CAMPBELLSVILLE, KY 42719-0072
PO BOX 73, CAMPBELLSVILLE, KY 42719-0073
PO BOX 74, CAMPBELLSVILLE, KY 42719-0074
PO BOX 75, CAMPBELLSVILLE, KY 42719-0075
PO BOX 76, CAMPBELLSVILLE, KY 42719-0076
PO BOX 77, CAMPBELLSVILLE, KY 42719-0077
PO BOX 78, CAMPBELLSVILLE, KY 42719-0078
PO BOX 79, CAMPBELLSVILLE, KY 42719-0079
PO BOX 80, CAMPBELLSVILLE, KY 42719-0080
PO BOX 81, CAMPBELLSVILLE, KY 42719-0081
PO BOX 82, CAMPBELLSVILLE, KY 42719-0082
PO BOX 83, CAMPBELLSVILLE, KY 42719-0083
PO BOX 84, CAMPBELLSVILLE, KY 42719-0084
PO BOX 85, CAMPBELLSVILLE, KY 42719-0085
PO BOX 86, CAMPBELLSVILLE, KY 42719-0086
PO BOX 87, CAMPBELLSVILLE, KY 42719-0087
PO BOX 88, CAMPBELLSVILLE, KY 42719-0088
PO BOX 89, CAMPBELLSVILLE, KY 42719-0089
PO BOX 90, CAMPBELLSVILLE, KY 42719-0090
PO BOX 91, CAMPBELLSVILLE, KY 42719-0091
PO BOX 92, CAMPBELLSVILLE, KY 42719-0092
PO BOX 93, CAMPBELLSVILLE, KY 42719-0093
PO BOX 94, CAMPBELLSVILLE, KY 42719-0094
PO BOX 95, CAMPBELLSVILLE, KY 42719-0095
PO BOX 96, CAMPBELLSVILLE, KY 42719-0096
PO BOX 97, CAMPBELLSVILLE, KY 42719-0097
PO BOX 98, CAMPBELLSVILLE, KY 42719-0098
PO BOX 99, CAMPBELLSVILLE, KY 42719-0099
PO BOX 100, CAMPBELLSVILLE, KY 42719-0100
PO BOX 101, CAMPBELLSVILLE, KY 42719-0101
PO BOX 102, CAMPBELLSVILLE, KY 42719-0102
PO BOX 103, CAMPBELLSVILLE, KY 42719-0103
PO BOX 104, CAMPBELLSVILLE, KY 42719-0104
PO BOX 105, CAMPBELLSVILLE, KY 42719-0105
PO BOX 106, CAMPBELLSVILLE, KY 42719-0106
PO BOX 107, CAMPBELLSVILLE, KY 42719-0107
PO BOX 108, CAMPBELLSVILLE, KY 42719-0108
PO BOX 109, CAMPBELLSVILLE, KY 42719-0109
PO BOX 110, CAMPBELLSVILLE, KY 42719-0110
PO BOX 111, CAMPBELLSVILLE, KY 42719-0111
PO BOX 112, CAMPBELLSVILLE, KY 42719-0112
PO BOX 113, CAMPBELLSVILLE, KY 42719-0113
PO BOX 114, CAMPBELLSVILLE, KY 42719-0114
PO BOX 115, CAMPBELLSVILLE, KY 42719-0115
PO BOX 116, CAMPBELLSVILLE, KY 42719-0116
PO BOX 117, CAMPBELLSVILLE, KY 42719-0117
PO BOX 118, CAMPBELLSVILLE, KY 42719-0118
PO BOX 119, CAMPBELLSVILLE, KY 42719-0119
PO BOX 120, CAMPBELLSVILLE, KY 42719-0120
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