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, CARLISLE, IN 47838-0001
PO BOX 2, CARLISLE, IN 47838-0002
PO BOX 3, CARLISLE, IN 47838-0003
PO BOX 4, CARLISLE, IN 47838-0004
PO BOX 5, CARLISLE, IN 47838-0005
PO BOX 6, CARLISLE, IN 47838-0006
PO BOX 7, CARLISLE, IN 47838-0007
PO BOX 8, CARLISLE, IN 47838-0008
PO BOX 9, CARLISLE, IN 47838-0009
PO BOX 10, CARLISLE, IN 47838-0010
PO BOX 11, CARLISLE, IN 47838-0011
PO BOX 12, CARLISLE, IN 47838-0012
PO BOX 13, CARLISLE, IN 47838-0013
PO BOX 14, CARLISLE, IN 47838-0014
PO BOX 15, CARLISLE, IN 47838-0015
PO BOX 16, CARLISLE, IN 47838-0016
PO BOX 17, CARLISLE, IN 47838-0017
PO BOX 18, CARLISLE, IN 47838-0018
PO BOX 19, CARLISLE, IN 47838-0019
PO BOX 20, CARLISLE, IN 47838-0020
PO BOX 21, CARLISLE, IN 47838-0021
PO BOX 22, CARLISLE, IN 47838-0022
PO BOX 23, CARLISLE, IN 47838-0023
PO BOX 24, CARLISLE, IN 47838-0024
PO BOX 25, CARLISLE, IN 47838-0025
PO BOX 26, CARLISLE, IN 47838-0026
PO BOX 27, CARLISLE, IN 47838-0027
PO BOX 28, CARLISLE, IN 47838-0028
PO BOX 29, CARLISLE, IN 47838-0029
PO BOX 30, CARLISLE, IN 47838-0030
PO BOX 31, CARLISLE, IN 47838-0031
PO BOX 32, CARLISLE, IN 47838-0032
PO BOX 33, CARLISLE, IN 47838-0033
PO BOX 34, CARLISLE, IN 47838-0034
PO BOX 35, CARLISLE, IN 47838-0035
PO BOX 36, CARLISLE, IN 47838-0036
PO BOX 37, CARLISLE, IN 47838-0037
PO BOX 38, CARLISLE, IN 47838-0038
PO BOX 39, CARLISLE, IN 47838-0039
PO BOX 40, CARLISLE, IN 47838-0040
PO BOX 41, CARLISLE, IN 47838-0041
PO BOX 42, CARLISLE, IN 47838-0042
PO BOX 43, CARLISLE, IN 47838-0043
PO BOX 44, CARLISLE, IN 47838-0044
PO BOX 45, CARLISLE, IN 47838-0045
PO BOX 46, CARLISLE, IN 47838-0046
PO BOX 47, CARLISLE, IN 47838-0047
PO BOX 48, CARLISLE, IN 47838-0048
PO BOX 49, CARLISLE, IN 47838-0049
PO BOX 50, CARLISLE, IN 47838-0050
PO BOX 51, CARLISLE, IN 47838-0051
PO BOX 52, CARLISLE, IN 47838-0052
PO BOX 53, CARLISLE, IN 47838-0053
PO BOX 54, CARLISLE, IN 47838-0054
PO BOX 55, CARLISLE, IN 47838-0055
PO BOX 56, CARLISLE, IN 47838-0056
PO BOX 57, CARLISLE, IN 47838-0057
PO BOX 58, CARLISLE, IN 47838-0058
PO BOX 59, CARLISLE, IN 47838-0059
PO BOX 60, CARLISLE, IN 47838-0060
PO BOX 61, CARLISLE, IN 47838-0061
PO BOX 62, CARLISLE, IN 47838-0062
PO BOX 63, CARLISLE, IN 47838-0063
PO BOX 64, CARLISLE, IN 47838-0064
PO BOX 65, CARLISLE, IN 47838-0065
PO BOX 66, CARLISLE, IN 47838-0066
PO BOX 67, CARLISLE, IN 47838-0067
PO BOX 68, CARLISLE, IN 47838-0068
PO BOX 69, CARLISLE, IN 47838-0069
PO BOX 70, CARLISLE, IN 47838-0070
PO BOX 71, CARLISLE, IN 47838-0071
PO BOX 72, CARLISLE, IN 47838-0072
PO BOX 73, CARLISLE, IN 47838-0073
PO BOX 74, CARLISLE, IN 47838-0074
PO BOX 75, CARLISLE, IN 47838-0075
PO BOX 76, CARLISLE, IN 47838-0076
PO BOX 77, CARLISLE, IN 47838-0077
PO BOX 78, CARLISLE, IN 47838-0078
PO BOX 79, CARLISLE, IN 47838-0079
PO BOX 80, CARLISLE, IN 47838-0080
PO BOX 81, CARLISLE, IN 47838-0081
PO BOX 82, CARLISLE, IN 47838-0082
PO BOX 83, CARLISLE, IN 47838-0083
PO BOX 84, CARLISLE, IN 47838-0084
PO BOX 85, CARLISLE, IN 47838-0085
PO BOX 86, CARLISLE, IN 47838-0086
PO BOX 87, CARLISLE, IN 47838-0087
PO BOX 88, CARLISLE, IN 47838-0088
PO BOX 89, CARLISLE, IN 47838-0089
PO BOX 90, CARLISLE, IN 47838-0090
PO BOX 91, CARLISLE, IN 47838-0091
PO BOX 92, CARLISLE, IN 47838-0092
PO BOX 93, CARLISLE, IN 47838-0093
PO BOX 94, CARLISLE, IN 47838-0094
PO BOX 95, CARLISLE, IN 47838-0095
PO BOX 96, CARLISLE, IN 47838-0096
PO BOX 97, CARLISLE, IN 47838-0097
PO BOX 98, CARLISLE, IN 47838-0098
PO BOX 99, CARLISLE, IN 47838-0099
PO BOX 100, CARLISLE, IN 47838-0100
PO BOX 101, CARLISLE, IN 47838-0101
PO BOX 102, CARLISLE, IN 47838-0102
PO BOX 103, CARLISLE, IN 47838-0103
PO BOX 104, CARLISLE, IN 47838-0104
PO BOX 105, CARLISLE, IN 47838-0105
PO BOX 106, CARLISLE, IN 47838-0106
PO BOX 107, CARLISLE, IN 47838-0107
PO BOX 108, CARLISLE, IN 47838-0108
PO BOX 109, CARLISLE, IN 47838-0109
PO BOX 110, CARLISLE, IN 47838-0110
PO BOX 111, CARLISLE, IN 47838-0111
PO BOX 112, CARLISLE, IN 47838-0112
PO BOX 113, CARLISLE, IN 47838-0113
PO BOX 114, CARLISLE, IN 47838-0114
PO BOX 115, CARLISLE, IN 47838-0115
PO BOX 116, CARLISLE, IN 47838-0116
PO BOX 117, CARLISLE, IN 47838-0117
PO BOX 118, CARLISLE, IN 47838-0118
PO BOX 119, CARLISLE, IN 47838-0119
PO BOX 120, CARLISLE, IN 47838-0120
PO BOX 121, CARLISLE, IN 47838-0121
PO BOX 122, CARLISLE, IN 47838-0122
PO BOX 123, CARLISLE, IN 47838-0123
PO BOX 124, CARLISLE, IN 47838-0124
PO BOX 125, CARLISLE, IN 47838-0125
PO BOX 126, CARLISLE, IN 47838-0126
PO BOX 127, CARLISLE, IN 47838-0127
PO BOX 128, CARLISLE, IN 47838-0128
PO BOX 129, CARLISLE, IN 47838-0129
PO BOX 130, CARLISLE, IN 47838-0130
PO BOX 131, CARLISLE, IN 47838-0131
PO BOX 132, CARLISLE, IN 47838-0132
PO BOX 133, CARLISLE, IN 47838-0133
PO BOX 134, CARLISLE, IN 47838-0134
PO BOX 135, CARLISLE, IN 47838-0135
PO BOX 136, CARLISLE, IN 47838-0136
PO BOX 137, CARLISLE, IN 47838-0137
PO BOX 138, CARLISLE, IN 47838-0138
PO BOX 139, CARLISLE, IN 47838-0139
PO BOX 140, CARLISLE, IN 47838-0140
PO BOX 141, CARLISLE, IN 47838-0141
PO BOX 142, CARLISLE, IN 47838-0142
PO BOX 143, CARLISLE, IN 47838-0143
PO BOX 144, CARLISLE, IN 47838-0144
PO BOX 145, CARLISLE, IN 47838-0145
PO BOX 146, CARLISLE, IN 47838-0146
PO BOX 147, CARLISLE, IN 47838-0147
PO BOX 148, CARLISLE, IN 47838-0148
PO BOX 149, CARLISLE, IN 47838-0149
PO BOX 150, CARLISLE, IN 47838-0150
PO BOX 151, CARLISLE, IN 47838-0151
PO BOX 152, CARLISLE, IN 47838-0152
PO BOX 153, CARLISLE, IN 47838-0153
PO BOX 154, CARLISLE, IN 47838-0154
PO BOX 155, CARLISLE, IN 47838-0155
PO BOX 156, CARLISLE, IN 47838-0156
PO BOX 157, CARLISLE, IN 47838-0157
PO BOX 158, CARLISLE, IN 47838-0158
PO BOX 159, CARLISLE, IN 47838-0159
PO BOX 160, CARLISLE, IN 47838-0160
PO BOX 161, CARLISLE, IN 47838-0161
PO BOX 162, CARLISLE, IN 47838-0162
PO BOX 163, CARLISLE, IN 47838-0163
PO BOX 164, CARLISLE, IN 47838-0164
PO BOX 165, CARLISLE, IN 47838-0165
PO BOX 166, CARLISLE, IN 47838-0166
PO BOX 167, CARLISLE, IN 47838-0167
PO BOX 168, CARLISLE, IN 47838-0168
PO BOX 169, CARLISLE, IN 47838-0169
PO BOX 170, CARLISLE, IN 47838-0170
PO BOX 171, CARLISLE, IN 47838-0171
PO BOX 172, CARLISLE, IN 47838-0172
PO BOX 173, CARLISLE, IN 47838-0173
PO BOX 174, CARLISLE, IN 47838-0174
PO BOX 175, CARLISLE, IN 47838-0175
PO BOX 176, CARLISLE, IN 47838-0176
PO BOX 177, CARLISLE, IN 47838-0177
PO BOX 178, CARLISLE, IN 47838-0178
PO BOX 179, CARLISLE, IN 47838-0179
PO BOX 180, CARLISLE, IN 47838-0180
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