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, KLEMME, IA 50449-0001
PO BOX 2, KLEMME, IA 50449-0002
PO BOX 3, KLEMME, IA 50449-0003
PO BOX 4, KLEMME, IA 50449-0004
PO BOX 5, KLEMME, IA 50449-0005
PO BOX 6, KLEMME, IA 50449-0006
PO BOX 7, KLEMME, IA 50449-0007
PO BOX 8, KLEMME, IA 50449-0008
PO BOX 9, KLEMME, IA 50449-0009
PO BOX 10, KLEMME, IA 50449-0010
PO BOX 11, KLEMME, IA 50449-0011
PO BOX 12, KLEMME, IA 50449-0012
PO BOX 13, KLEMME, IA 50449-0013
PO BOX 14, KLEMME, IA 50449-0014
PO BOX 15, KLEMME, IA 50449-0015
PO BOX 16, KLEMME, IA 50449-0016
PO BOX 17, KLEMME, IA 50449-0017
PO BOX 18, KLEMME, IA 50449-0018
PO BOX 19, KLEMME, IA 50449-0019
PO BOX 20, KLEMME, IA 50449-0020
PO BOX 21, KLEMME, IA 50449-0021
PO BOX 22, KLEMME, IA 50449-0022
PO BOX 23, KLEMME, IA 50449-0023
PO BOX 24, KLEMME, IA 50449-0024
PO BOX 25, KLEMME, IA 50449-0025
PO BOX 26, KLEMME, IA 50449-0026
PO BOX 27, KLEMME, IA 50449-0027
PO BOX 28, KLEMME, IA 50449-0028
PO BOX 29, KLEMME, IA 50449-0029
PO BOX 30, KLEMME, IA 50449-0030
PO BOX 31, KLEMME, IA 50449-0031
PO BOX 32, KLEMME, IA 50449-0032
PO BOX 33, KLEMME, IA 50449-0033
PO BOX 34, KLEMME, IA 50449-0034
PO BOX 35, KLEMME, IA 50449-0035
PO BOX 36, KLEMME, IA 50449-0036
PO BOX 37, KLEMME, IA 50449-0037
PO BOX 38, KLEMME, IA 50449-0038
PO BOX 39, KLEMME, IA 50449-0039
PO BOX 40, KLEMME, IA 50449-0040
PO BOX 41, KLEMME, IA 50449-0041
PO BOX 42, KLEMME, IA 50449-0042
PO BOX 43, KLEMME, IA 50449-0043
PO BOX 44, KLEMME, IA 50449-0044
PO BOX 45, KLEMME, IA 50449-0045
PO BOX 46, KLEMME, IA 50449-0046
PO BOX 47, KLEMME, IA 50449-0047
PO BOX 48, KLEMME, IA 50449-0048
PO BOX 49, KLEMME, IA 50449-0049
PO BOX 50, KLEMME, IA 50449-0050
PO BOX 51, KLEMME, IA 50449-0051
PO BOX 52, KLEMME, IA 50449-0052
PO BOX 53, KLEMME, IA 50449-0053
PO BOX 54, KLEMME, IA 50449-0054
PO BOX 55, KLEMME, IA 50449-0055
PO BOX 56, KLEMME, IA 50449-0056
PO BOX 57, KLEMME, IA 50449-0057
PO BOX 58, KLEMME, IA 50449-0058
PO BOX 59, KLEMME, IA 50449-0059
PO BOX 60, KLEMME, IA 50449-0060
PO BOX 61, KLEMME, IA 50449-0061
PO BOX 62, KLEMME, IA 50449-0062
PO BOX 63, KLEMME, IA 50449-0063
PO BOX 64, KLEMME, IA 50449-0064
PO BOX 65, KLEMME, IA 50449-0065
PO BOX 66, KLEMME, IA 50449-0066
PO BOX 67, KLEMME, IA 50449-0067
PO BOX 68, KLEMME, IA 50449-0068
PO BOX 69, KLEMME, IA 50449-0069
PO BOX 70, KLEMME, IA 50449-0070
PO BOX 71, KLEMME, IA 50449-0071
PO BOX 72, KLEMME, IA 50449-0072
PO BOX 73, KLEMME, IA 50449-0073
PO BOX 74, KLEMME, IA 50449-0074
PO BOX 75, KLEMME, IA 50449-0075
PO BOX 76, KLEMME, IA 50449-0076
PO BOX 77, KLEMME, IA 50449-0077
PO BOX 78, KLEMME, IA 50449-0078
PO BOX 79, KLEMME, IA 50449-0079
PO BOX 80, KLEMME, IA 50449-0080
PO BOX 81, KLEMME, IA 50449-0081
PO BOX 82, KLEMME, IA 50449-0082
PO BOX 83, KLEMME, IA 50449-0083
PO BOX 84, KLEMME, IA 50449-0084
PO BOX 85, KLEMME, IA 50449-0085
PO BOX 86, KLEMME, IA 50449-0086
PO BOX 87, KLEMME, IA 50449-0087
PO BOX 88, KLEMME, IA 50449-0088
PO BOX 89, KLEMME, IA 50449-0089
PO BOX 90, KLEMME, IA 50449-0090
PO BOX 91, KLEMME, IA 50449-0091
PO BOX 92, KLEMME, IA 50449-0092
PO BOX 93, KLEMME, IA 50449-0093
PO BOX 94, KLEMME, IA 50449-0094
PO BOX 95, KLEMME, IA 50449-0095
PO BOX 96, KLEMME, IA 50449-0096
PO BOX 97, KLEMME, IA 50449-0097
PO BOX 98, KLEMME, IA 50449-0098
PO BOX 99, KLEMME, IA 50449-0099
PO BOX 100, KLEMME, IA 50449-0100
PO BOX 101, KLEMME, IA 50449-0101
PO BOX 102, KLEMME, IA 50449-0102
PO BOX 103, KLEMME, IA 50449-0103
PO BOX 104, KLEMME, IA 50449-0104
PO BOX 105, KLEMME, IA 50449-0105
PO BOX 106, KLEMME, IA 50449-0106
PO BOX 107, KLEMME, IA 50449-0107
PO BOX 108, KLEMME, IA 50449-0108
PO BOX 109, KLEMME, IA 50449-0109
PO BOX 110, KLEMME, IA 50449-0110
PO BOX 111, KLEMME, IA 50449-0111
PO BOX 112, KLEMME, IA 50449-0112
PO BOX 113, KLEMME, IA 50449-0113
PO BOX 114, KLEMME, IA 50449-0114
PO BOX 115, KLEMME, IA 50449-0115
PO BOX 116, KLEMME, IA 50449-0116
PO BOX 117, KLEMME, IA 50449-0117
PO BOX 118, KLEMME, IA 50449-0118
PO BOX 119, KLEMME, IA 50449-0119
PO BOX 120, KLEMME, IA 50449-0120
PO BOX 121, KLEMME, IA 50449-0121
PO BOX 122, KLEMME, IA 50449-0122
PO BOX 123, KLEMME, IA 50449-0123
PO BOX 124, KLEMME, IA 50449-0124
PO BOX 125, KLEMME, IA 50449-0125
PO BOX 126, KLEMME, IA 50449-0126
PO BOX 127, KLEMME, IA 50449-0127
PO BOX 128, KLEMME, IA 50449-0128
PO BOX 129, KLEMME, IA 50449-0129
PO BOX 130, KLEMME, IA 50449-0130
PO BOX 131, KLEMME, IA 50449-0131
PO BOX 132, KLEMME, IA 50449-0132
PO BOX 133, KLEMME, IA 50449-0133
PO BOX 134, KLEMME, IA 50449-0134
PO BOX 135, KLEMME, IA 50449-0135
PO BOX 136, KLEMME, IA 50449-0136
PO BOX 137, KLEMME, IA 50449-0137
PO BOX 138, KLEMME, IA 50449-0138
PO BOX 139, KLEMME, IA 50449-0139
PO BOX 140, KLEMME, IA 50449-0140
PO BOX 141, KLEMME, IA 50449-0141
PO BOX 142, KLEMME, IA 50449-0142
PO BOX 143, KLEMME, IA 50449-0143
PO BOX 144, KLEMME, IA 50449-0144
PO BOX 145, KLEMME, IA 50449-0145
PO BOX 146, KLEMME, IA 50449-0146
PO BOX 147, KLEMME, IA 50449-0147
PO BOX 148, KLEMME, IA 50449-0148
PO BOX 149, KLEMME, IA 50449-0149
PO BOX 150, KLEMME, IA 50449-0150
PO BOX 151, KLEMME, IA 50449-0151
PO BOX 152, KLEMME, IA 50449-0152
PO BOX 153, KLEMME, IA 50449-0153
PO BOX 154, KLEMME, IA 50449-0154
PO BOX 155, KLEMME, IA 50449-0155
PO BOX 156, KLEMME, IA 50449-0156
PO BOX 157, KLEMME, IA 50449-0157
PO BOX 158, KLEMME, IA 50449-0158
PO BOX 159, KLEMME, IA 50449-0159
PO BOX 160, KLEMME, IA 50449-0160
PO BOX 161, KLEMME, IA 50449-0161
PO BOX 162, KLEMME, IA 50449-0162
PO BOX 163, KLEMME, IA 50449-0163
PO BOX 164, KLEMME, IA 50449-0164
PO BOX 165, KLEMME, IA 50449-0165
PO BOX 166, KLEMME, IA 50449-0166
PO BOX 167, KLEMME, IA 50449-0167
PO BOX 168, KLEMME, IA 50449-0168
PO BOX 169, KLEMME, IA 50449-0169
PO BOX 170, KLEMME, IA 50449-0170
PO BOX 171, KLEMME, IA 50449-0171
PO BOX 172, KLEMME, IA 50449-0172
PO BOX 173, KLEMME, IA 50449-0173
PO BOX 174, KLEMME, IA 50449-0174
PO BOX 175, KLEMME, IA 50449-0175
PO BOX 176, KLEMME, IA 50449-0176
PO BOX 177, KLEMME, IA 50449-0177
PO BOX 178, KLEMME, IA 50449-0178
PO BOX 179, KLEMME, IA 50449-0179
PO BOX 180, KLEMME, IA 50449-0180
PO BOX 181, KLEMME, IA 50449-0181
PO BOX 182, KLEMME, IA 50449-0182
PO BOX 183, KLEMME, IA 50449-0183
PO BOX 184, KLEMME, IA 50449-0184
PO BOX 185, KLEMME, IA 50449-0185
PO BOX 186, KLEMME, IA 50449-0186
PO BOX 187, KLEMME, IA 50449-0187
PO BOX 188, KLEMME, IA 50449-0188
PO BOX 189, KLEMME, IA 50449-0189
PO BOX 190, KLEMME, IA 50449-0190
PO BOX 191, KLEMME, IA 50449-0191
PO BOX 192, KLEMME, IA 50449-0192
PO BOX 193, KLEMME, IA 50449-0193
PO BOX 194, KLEMME, IA 50449-0194
PO BOX 195, KLEMME, IA 50449-0195
PO BOX 196, KLEMME, IA 50449-0196
PO BOX 197, KLEMME, IA 50449-0197
PO BOX 198, KLEMME, IA 50449-0198
PO BOX 199, KLEMME, IA 50449-0199
PO BOX 200, KLEMME, IA 50449-0200
PO BOX 201, KLEMME, IA 50449-0201
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