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, CARLETON, NE 68326-0001
PO BOX 2, CARLETON, NE 68326-0002
PO BOX 3, CARLETON, NE 68326-0003
PO BOX 4, CARLETON, NE 68326-0004
PO BOX 5, CARLETON, NE 68326-0005
PO BOX 6, CARLETON, NE 68326-0006
PO BOX 7, CARLETON, NE 68326-0007
PO BOX 8, CARLETON, NE 68326-0008
PO BOX 9, CARLETON, NE 68326-0009
PO BOX 10, CARLETON, NE 68326-0010
PO BOX 11, CARLETON, NE 68326-0011
PO BOX 12, CARLETON, NE 68326-0012
PO BOX 13, CARLETON, NE 68326-0013
PO BOX 14, CARLETON, NE 68326-0014
PO BOX 15, CARLETON, NE 68326-0015
PO BOX 16, CARLETON, NE 68326-0016
PO BOX 17, CARLETON, NE 68326-0017
PO BOX 18, CARLETON, NE 68326-0018
PO BOX 19, CARLETON, NE 68326-0019
PO BOX 20, CARLETON, NE 68326-0020
PO BOX 21, CARLETON, NE 68326-0021
PO BOX 22, CARLETON, NE 68326-0022
PO BOX 23, CARLETON, NE 68326-0023
PO BOX 24, CARLETON, NE 68326-0024
PO BOX 25, CARLETON, NE 68326-0025
PO BOX 26, CARLETON, NE 68326-0026
PO BOX 27, CARLETON, NE 68326-0027
PO BOX 28, CARLETON, NE 68326-0028
PO BOX 29, CARLETON, NE 68326-0029
PO BOX 30, CARLETON, NE 68326-0030
PO BOX 31, CARLETON, NE 68326-0031
PO BOX 32, CARLETON, NE 68326-0032
PO BOX 33, CARLETON, NE 68326-0033
PO BOX 34, CARLETON, NE 68326-0034
PO BOX 35, CARLETON, NE 68326-0035
PO BOX 36, CARLETON, NE 68326-0036
PO BOX 37, CARLETON, NE 68326-0037
PO BOX 38, CARLETON, NE 68326-0038
PO BOX 39, CARLETON, NE 68326-0039
PO BOX 40, CARLETON, NE 68326-0040
PO BOX 41, CARLETON, NE 68326-0041
PO BOX 42, CARLETON, NE 68326-0042
PO BOX 43, CARLETON, NE 68326-0043
PO BOX 44, CARLETON, NE 68326-0044
PO BOX 45, CARLETON, NE 68326-0045
PO BOX 46, CARLETON, NE 68326-0046
PO BOX 47, CARLETON, NE 68326-0047
PO BOX 48, CARLETON, NE 68326-0048
PO BOX 49, CARLETON, NE 68326-0049
PO BOX 50, CARLETON, NE 68326-0050
PO BOX 51, CARLETON, NE 68326-0051
PO BOX 52, CARLETON, NE 68326-0052
PO BOX 53, CARLETON, NE 68326-0053
PO BOX 54, CARLETON, NE 68326-0054
PO BOX 55, CARLETON, NE 68326-0055
PO BOX 56, CARLETON, NE 68326-0056
PO BOX 57, CARLETON, NE 68326-0057
PO BOX 58, CARLETON, NE 68326-0058
PO BOX 59, CARLETON, NE 68326-0059
PO BOX 60, CARLETON, NE 68326-0060
PO BOX 61, CARLETON, NE 68326-0061
PO BOX 62, CARLETON, NE 68326-0062
PO BOX 63, CARLETON, NE 68326-0063
PO BOX 64, CARLETON, NE 68326-0064
PO BOX 65, CARLETON, NE 68326-0065
PO BOX 66, CARLETON, NE 68326-0066
PO BOX 67, CARLETON, NE 68326-0067
PO BOX 68, CARLETON, NE 68326-0068
PO BOX 69, CARLETON, NE 68326-0069
PO BOX 70, CARLETON, NE 68326-0070
PO BOX 71, CARLETON, NE 68326-0071
PO BOX 72, CARLETON, NE 68326-0072
PO BOX 73, CARLETON, NE 68326-0073
PO BOX 74, CARLETON, NE 68326-0074
PO BOX 75, CARLETON, NE 68326-0075
PO BOX 76, CARLETON, NE 68326-0076
PO BOX 77, CARLETON, NE 68326-0077
PO BOX 78, CARLETON, NE 68326-0078
PO BOX 79, CARLETON, NE 68326-0079
PO BOX 80, CARLETON, NE 68326-0080
PO BOX 81, CARLETON, NE 68326-0081
PO BOX 82, CARLETON, NE 68326-0082
PO BOX 83, CARLETON, NE 68326-0083
PO BOX 84, CARLETON, NE 68326-0084
PO BOX 85, CARLETON, NE 68326-0085
PO BOX 86, CARLETON, NE 68326-0086
PO BOX 87, CARLETON, NE 68326-0087
PO BOX 88, CARLETON, NE 68326-0088
PO BOX 89, CARLETON, NE 68326-0089
PO BOX 90, CARLETON, NE 68326-0090
PO BOX 91, CARLETON, NE 68326-0091
PO BOX 92, CARLETON, NE 68326-0092
PO BOX 93, CARLETON, NE 68326-0093
PO BOX 94, CARLETON, NE 68326-0094
PO BOX 95, CARLETON, NE 68326-0095
PO BOX 96, CARLETON, NE 68326-0096
PO BOX 97, CARLETON, NE 68326-0097
PO BOX 98, CARLETON, NE 68326-0098
PO BOX 99, CARLETON, NE 68326-0099
PO BOX 100, CARLETON, NE 68326-0100
PO BOX 101, CARLETON, NE 68326-0101
PO BOX 102, CARLETON, NE 68326-0102
PO BOX 103, CARLETON, NE 68326-0103
PO BOX 104, CARLETON, NE 68326-0104
PO BOX 105, CARLETON, NE 68326-0105
PO BOX 106, CARLETON, NE 68326-0106
PO BOX 107, CARLETON, NE 68326-0107
PO BOX 108, CARLETON, NE 68326-0108
PO BOX 109, CARLETON, NE 68326-0109
PO BOX 110, CARLETON, NE 68326-0110
PO BOX 111, CARLETON, NE 68326-0111
PO BOX 112, CARLETON, NE 68326-0112
PO BOX 113, CARLETON, NE 68326-0113
PO BOX 114, CARLETON, NE 68326-0114
PO BOX 115, CARLETON, NE 68326-0115
PO BOX 116, CARLETON, NE 68326-0116
PO BOX 117, CARLETON, NE 68326-0117
PO BOX 118, CARLETON, NE 68326-0118
PO BOX 119, CARLETON, NE 68326-0119
PO BOX 120, CARLETON, NE 68326-0120
PO BOX 121, CARLETON, NE 68326-0121
PO BOX 122, CARLETON, NE 68326-0122
PO BOX 123, CARLETON, NE 68326-0123
PO BOX 124, CARLETON, NE 68326-0124
PO BOX 125, CARLETON, NE 68326-0125
PO BOX 126, CARLETON, NE 68326-0126
PO BOX 127, CARLETON, NE 68326-0127
PO BOX 128, CARLETON, NE 68326-0128
PO BOX 129, CARLETON, NE 68326-0129
PO BOX 130, CARLETON, NE 68326-0130
PO BOX 131, CARLETON, NE 68326-0131
PO BOX 132, CARLETON, NE 68326-0132
PO BOX 133, CARLETON, NE 68326-0133
PO BOX 134, CARLETON, NE 68326-0134
PO BOX 135, CARLETON, NE 68326-0135
PO BOX 136, CARLETON, NE 68326-0136
PO BOX 137, CARLETON, NE 68326-0137
PO BOX 138, CARLETON, NE 68326-0138
PO BOX 139, CARLETON, NE 68326-0139
PO BOX 140, CARLETON, NE 68326-0140
PO BOX 141, CARLETON, NE 68326-0141
PO BOX 142, CARLETON, NE 68326-0142
PO BOX 143, CARLETON, NE 68326-0143
PO BOX 144, CARLETON, NE 68326-0144
PO BOX 145, CARLETON, NE 68326-0145
PO BOX 146, CARLETON, NE 68326-0146
PO BOX 147, CARLETON, NE 68326-0147
PO BOX 148, CARLETON, NE 68326-0148
PO BOX 149, CARLETON, NE 68326-0149
PO BOX 150, CARLETON, NE 68326-0150
PO BOX 151, CARLETON, NE 68326-0151
PO BOX 152, CARLETON, NE 68326-0152
PO BOX 153, CARLETON, NE 68326-0153
PO BOX 154, CARLETON, NE 68326-0154
PO BOX 155, CARLETON, NE 68326-0155
PO BOX 156, CARLETON, NE 68326-0156
PO BOX 157, CARLETON, NE 68326-0157
PO BOX 158, CARLETON, NE 68326-0158
PO BOX 159, CARLETON, NE 68326-0159
PO BOX 160, CARLETON, NE 68326-0160
PO BOX 161, CARLETON, NE 68326-0161
PO BOX 162, CARLETON, NE 68326-0162
PO BOX 163, CARLETON, NE 68326-0163
PO BOX 164, CARLETON, NE 68326-0164
PO BOX 165, CARLETON, NE 68326-0165
PO BOX 166, CARLETON, NE 68326-0166
PO BOX 167, CARLETON, NE 68326-0167
PO BOX 168, CARLETON, NE 68326-0168
PO BOX 169, CARLETON, NE 68326-0169
PO BOX 170, CARLETON, NE 68326-0170
PO BOX 171, CARLETON, NE 68326-0171
PO BOX 172, CARLETON, NE 68326-0172
PO BOX 173, CARLETON, NE 68326-0173
PO BOX 174, CARLETON, NE 68326-0174
PO BOX 175, CARLETON, NE 68326-0175
PO BOX 176, CARLETON, NE 68326-0176
PO BOX 177, CARLETON, NE 68326-0177
PO BOX 178, CARLETON, NE 68326-0178
PO BOX 179, CARLETON, NE 68326-0179
PO BOX 180, CARLETON, NE 68326-0180
PO BOX 181, CARLETON, NE 68326-0181
PO BOX 182, CARLETON, NE 68326-0182
PO BOX 183, CARLETON, NE 68326-0183
PO BOX 184, CARLETON, NE 68326-0184
PO BOX 185, CARLETON, NE 68326-0185
PO BOX 186, CARLETON, NE 68326-0186
PO BOX 187, CARLETON, NE 68326-0187
PO BOX 188, CARLETON, NE 68326-0188
PO BOX 189, CARLETON, NE 68326-0189
PO BOX 190, CARLETON, NE 68326-0190
PO BOX 191, CARLETON, NE 68326-0191
PO BOX 192, CARLETON, NE 68326-0192
PO BOX 193, CARLETON, NE 68326-0193
PO BOX 194, CARLETON, NE 68326-0194
PO BOX 195, CARLETON, NE 68326-0195
PO BOX 196, CARLETON, NE 68326-0196
PO BOX 197, CARLETON, NE 68326-0197
PO BOX 198, CARLETON, NE 68326-0198
PO BOX 199, CARLETON, NE 68326-0199
PO BOX 200, CARLETON, NE 68326-0200
PO BOX 201, CARLETON, NE 68326-0201
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