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, TIPTON, IA 52772-0001
PO BOX 2, TIPTON, IA 52772-0002
PO BOX 3, TIPTON, IA 52772-0003
PO BOX 4, TIPTON, IA 52772-0004
PO BOX 5, TIPTON, IA 52772-0005
PO BOX 6, TIPTON, IA 52772-0006
PO BOX 7, TIPTON, IA 52772-0007
PO BOX 8, TIPTON, IA 52772-0008
PO BOX 9, TIPTON, IA 52772-0009
PO BOX 10, TIPTON, IA 52772-0010
PO BOX 11, TIPTON, IA 52772-0011
PO BOX 12, TIPTON, IA 52772-0012
PO BOX 13, TIPTON, IA 52772-0013
PO BOX 14, TIPTON, IA 52772-0014
PO BOX 15, TIPTON, IA 52772-0015
PO BOX 16, TIPTON, IA 52772-0016
PO BOX 17, TIPTON, IA 52772-0017
PO BOX 18, TIPTON, IA 52772-0018
PO BOX 19, TIPTON, IA 52772-0019
PO BOX 20, TIPTON, IA 52772-0020
PO BOX 21, TIPTON, IA 52772-0021
PO BOX 22, TIPTON, IA 52772-0022
PO BOX 23, TIPTON, IA 52772-0023
PO BOX 24, TIPTON, IA 52772-0024
PO BOX 25, TIPTON, IA 52772-0025
PO BOX 26, TIPTON, IA 52772-0026
PO BOX 27, TIPTON, IA 52772-0027
PO BOX 28, TIPTON, IA 52772-0028
PO BOX 29, TIPTON, IA 52772-0029
PO BOX 30, TIPTON, IA 52772-0030
PO BOX 31, TIPTON, IA 52772-0031
PO BOX 32, TIPTON, IA 52772-0032
PO BOX 33, TIPTON, IA 52772-0033
PO BOX 34, TIPTON, IA 52772-0034
PO BOX 35, TIPTON, IA 52772-0035
PO BOX 36, TIPTON, IA 52772-0036
PO BOX 37, TIPTON, IA 52772-0037
PO BOX 38, TIPTON, IA 52772-0038
PO BOX 39, TIPTON, IA 52772-0039
PO BOX 40, TIPTON, IA 52772-0040
PO BOX 41, TIPTON, IA 52772-0041
PO BOX 42, TIPTON, IA 52772-0042
PO BOX 43, TIPTON, IA 52772-0043
PO BOX 44, TIPTON, IA 52772-0044
PO BOX 45, TIPTON, IA 52772-0045
PO BOX 46, TIPTON, IA 52772-0046
PO BOX 47, TIPTON, IA 52772-0047
PO BOX 48, TIPTON, IA 52772-0048
PO BOX 49, TIPTON, IA 52772-0049
PO BOX 50, TIPTON, IA 52772-0050
PO BOX 51, TIPTON, IA 52772-0051
PO BOX 52, TIPTON, IA 52772-0052
PO BOX 53, TIPTON, IA 52772-0053
PO BOX 54, TIPTON, IA 52772-0054
PO BOX 55, TIPTON, IA 52772-0055
PO BOX 56, TIPTON, IA 52772-0056
PO BOX 57, TIPTON, IA 52772-0057
PO BOX 58, TIPTON, IA 52772-0058
PO BOX 59, TIPTON, IA 52772-0059
PO BOX 60, TIPTON, IA 52772-0060
PO BOX 61, TIPTON, IA 52772-0061
PO BOX 62, TIPTON, IA 52772-0062
PO BOX 63, TIPTON, IA 52772-0063
PO BOX 64, TIPTON, IA 52772-0064
PO BOX 65, TIPTON, IA 52772-0065
PO BOX 66, TIPTON, IA 52772-0066
PO BOX 67, TIPTON, IA 52772-0067
PO BOX 68, TIPTON, IA 52772-0068
PO BOX 69, TIPTON, IA 52772-0069
PO BOX 70, TIPTON, IA 52772-0070
PO BOX 71, TIPTON, IA 52772-0071
PO BOX 72, TIPTON, IA 52772-0072
PO BOX 73, TIPTON, IA 52772-0073
PO BOX 74, TIPTON, IA 52772-0074
PO BOX 75, TIPTON, IA 52772-0075
PO BOX 76, TIPTON, IA 52772-0076
PO BOX 77, TIPTON, IA 52772-0077
PO BOX 78, TIPTON, IA 52772-0078
PO BOX 79, TIPTON, IA 52772-0079
PO BOX 80, TIPTON, IA 52772-0080
PO BOX 81, TIPTON, IA 52772-0081
PO BOX 82, TIPTON, IA 52772-0082
PO BOX 83, TIPTON, IA 52772-0083
PO BOX 84, TIPTON, IA 52772-0084
PO BOX 85, TIPTON, IA 52772-0085
PO BOX 86, TIPTON, IA 52772-0086
PO BOX 87, TIPTON, IA 52772-0087
PO BOX 88, TIPTON, IA 52772-0088
PO BOX 89, TIPTON, IA 52772-0089
PO BOX 90, TIPTON, IA 52772-0090
PO BOX 91, TIPTON, IA 52772-0091
PO BOX 92, TIPTON, IA 52772-0092
PO BOX 93, TIPTON, IA 52772-0093
PO BOX 94, TIPTON, IA 52772-0094
PO BOX 95, TIPTON, IA 52772-0095
PO BOX 96, TIPTON, IA 52772-0096
PO BOX 97, TIPTON, IA 52772-0097
PO BOX 98, TIPTON, IA 52772-0098
PO BOX 99, TIPTON, IA 52772-0099
PO BOX 100, TIPTON, IA 52772-0100
PO BOX 101, TIPTON, IA 52772-0101
PO BOX 102, TIPTON, IA 52772-0102
PO BOX 103, TIPTON, IA 52772-0103
PO BOX 104, TIPTON, IA 52772-0104
PO BOX 105, TIPTON, IA 52772-0105
PO BOX 106, TIPTON, IA 52772-0106
PO BOX 107, TIPTON, IA 52772-0107
PO BOX 108, TIPTON, IA 52772-0108
PO BOX 109, TIPTON, IA 52772-0109
PO BOX 110, TIPTON, IA 52772-0110
PO BOX 111, TIPTON, IA 52772-0111
PO BOX 112, TIPTON, IA 52772-0112
PO BOX 113, TIPTON, IA 52772-0113
PO BOX 114, TIPTON, IA 52772-0114
PO BOX 115, TIPTON, IA 52772-0115
PO BOX 116, TIPTON, IA 52772-0116
PO BOX 117, TIPTON, IA 52772-0117
PO BOX 118, TIPTON, IA 52772-0118
PO BOX 119, TIPTON, IA 52772-0119
PO BOX 120, TIPTON, IA 52772-0120
PO BOX 121, TIPTON, IA 52772-0121
PO BOX 122, TIPTON, IA 52772-0122
PO BOX 123, TIPTON, IA 52772-0123
PO BOX 124, TIPTON, IA 52772-0124
PO BOX 125, TIPTON, IA 52772-0125
PO BOX 126, TIPTON, IA 52772-0126
PO BOX 127, TIPTON, IA 52772-0127
PO BOX 128, TIPTON, IA 52772-0128
PO BOX 129, TIPTON, IA 52772-0129
PO BOX 130, TIPTON, IA 52772-0130
PO BOX 131, TIPTON, IA 52772-0131
PO BOX 132, TIPTON, IA 52772-0132
PO BOX 133, TIPTON, IA 52772-0133
PO BOX 134, TIPTON, IA 52772-0134
PO BOX 135, TIPTON, IA 52772-0135
PO BOX 136, TIPTON, IA 52772-0136
PO BOX 137, TIPTON, IA 52772-0137
PO BOX 138, TIPTON, IA 52772-0138
PO BOX 139, TIPTON, IA 52772-0139
PO BOX 140, TIPTON, IA 52772-0140
PO BOX 141, TIPTON, IA 52772-0141
PO BOX 142, TIPTON, IA 52772-0142
PO BOX 143, TIPTON, IA 52772-0143
PO BOX 144, TIPTON, IA 52772-0144
PO BOX 145, TIPTON, IA 52772-0145
PO BOX 146, TIPTON, IA 52772-0146
PO BOX 147, TIPTON, IA 52772-0147
PO BOX 148, TIPTON, IA 52772-0148
PO BOX 149, TIPTON, IA 52772-0149
PO BOX 150, TIPTON, IA 52772-0150
PO BOX 151, TIPTON, IA 52772-0151
PO BOX 152, TIPTON, IA 52772-0152
PO BOX 153, TIPTON, IA 52772-0153
PO BOX 154, TIPTON, IA 52772-0154
PO BOX 155, TIPTON, IA 52772-0155
PO BOX 156, TIPTON, IA 52772-0156
PO BOX 157, TIPTON, IA 52772-0157
PO BOX 158, TIPTON, IA 52772-0158
PO BOX 159, TIPTON, IA 52772-0159
PO BOX 160, TIPTON, IA 52772-0160
PO BOX 161, TIPTON, IA 52772-0161
PO BOX 162, TIPTON, IA 52772-0162
PO BOX 163, TIPTON, IA 52772-0163
PO BOX 164, TIPTON, IA 52772-0164
PO BOX 165, TIPTON, IA 52772-0165
PO BOX 166, TIPTON, IA 52772-0166
PO BOX 167, TIPTON, IA 52772-0167
PO BOX 168, TIPTON, IA 52772-0168
PO BOX 169, TIPTON, IA 52772-0169
PO BOX 170, TIPTON, IA 52772-0170
PO BOX 171, TIPTON, IA 52772-0171
PO BOX 172, TIPTON, IA 52772-0172
PO BOX 173, TIPTON, IA 52772-0173
PO BOX 174, TIPTON, IA 52772-0174
PO BOX 175, TIPTON, IA 52772-0175
PO BOX 176, TIPTON, IA 52772-0176
PO BOX 177, TIPTON, IA 52772-0177
PO BOX 178, TIPTON, IA 52772-0178
PO BOX 179, TIPTON, IA 52772-0179
PO BOX 180, TIPTON, IA 52772-0180
PO BOX 181, TIPTON, IA 52772-0181
PO BOX 182, TIPTON, IA 52772-0182
PO BOX 183, TIPTON, IA 52772-0183
PO BOX 184, TIPTON, IA 52772-0184
PO BOX 185, TIPTON, IA 52772-0185
PO BOX 186, TIPTON, IA 52772-0186
PO BOX 187, TIPTON, IA 52772-0187
PO BOX 188, TIPTON, IA 52772-0188
PO BOX 189, TIPTON, IA 52772-0189
PO BOX 190, TIPTON, IA 52772-0190
PO BOX 191, TIPTON, IA 52772-0191
PO BOX 192, TIPTON, IA 52772-0192
PO BOX 193, TIPTON, IA 52772-0193
PO BOX 194, TIPTON, IA 52772-0194
PO BOX 195, TIPTON, IA 52772-0195
PO BOX 196, TIPTON, IA 52772-0196
PO BOX 197, TIPTON, IA 52772-0197
PO BOX 198, TIPTON, IA 52772-0198
PO BOX 199, TIPTON, IA 52772-0199
PO BOX 200, TIPTON, IA 52772-0200
PO BOX 201, TIPTON, IA 52772-0201
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